I’m Using a 10 cm Wide Jar and One Large Cotton Wick Overheats the Centre — Should I Test Two Smaller Wicks Instead?

I’m Using a 10 cm Wide Jar and One Large Cotton Wick Overheats the Centre — Should I Test Two Smaller Wicks Instead?

 

Apothecary 10 cm jar ₹212.40 (500 gm) · in stock Eco C1 ₹118.00 for 20 · 10-pack out of stock Eco C2 ₹94.40 for 10 · every C2 pack in stock
10 cm jar · one large cotton wick · hot centre
Test a pair against your single wick before you change anything else.
★★★☆☆
"Warm comforting fragrance"
M AVerified buyer · Sep 2025
Autumn
★★★★☆
"Will buy more.. wonderful"
Punam SarmaVerified buyer · Dec 2024
Cinnamon Vanilla
★★★★☆
"Good quality .... if possible delivery date would be try little bit quick please"
Subhankar RoyVerified buyer · Sep 2024
Eco Candle Wicks
★★★★★
"Quality wick, works very well"
AshwiniSep 2025
Eco Candle Wicks
★★★★★
"One of the best wax for container Candles. Easy to work with, especially if you are a beginner."
ThenirvaofficialVerified buyer · Nov 2025
Luxury Soy Wax CSI 464 (Flakes Form) For Container Candles
★★★★★
"Soy wax quality is the best, which ever products ordered were properly packed and delivered as early as possible, timely response to the inquiries. Good service"
Jaya SawlaniVerified buyer · Nov 2025
Luxury Soy Wax CSI 464 (Flakes Form) For Container Candles
★★★☆☆
"Warm comforting fragrance"
M AVerified buyer · Sep 2025
Autumn
★★★★☆
"Will buy more.. wonderful"
Punam SarmaVerified buyer · Dec 2024
Cinnamon Vanilla
★★★★☆
"Good quality .... if possible delivery date would be try little bit quick please"
Subhankar RoyVerified buyer · Sep 2024
Eco Candle Wicks
★★★★★
"Quality wick, works very well"
AshwiniSep 2025
Eco Candle Wicks
★★★★★
"One of the best wax for container Candles. Easy to work with, especially if you are a beginner."
ThenirvaofficialVerified buyer · Nov 2025
Luxury Soy Wax CSI 464 (Flakes Form) For Container Candles
★★★★★
"Soy wax quality is the best, which ever products ordered were properly packed and delivered as early as possible, timely response to the inquiries. Good service"
Jaya SawlaniVerified buyer · Nov 2025
Luxury Soy Wax CSI 464 (Flakes Form) For Container Candles
Reviews collected and published through Judge.me on candlemakingsuppliesindia.store. They are general reviews of the products named on each card, not assessments of the advice set out below. Wording is unedited.
Shop Eco Candle Wicks — from ₹94.40 Send us your centre-depth log
✓ Prices verified 29 September 2026, stock checked per size ✓ MSDS and IFRA documentation on request on WhatsApp ✓ Raw materials only — CSI does not sell finished candles
CSI Wick Lab · 10–12 cm Jars
When one large cotton wick overheats the centre of a 10 cm jar, the jar is telling you about its width. Pour two smaller wicks against your single, log the edge, depth and flame through the full life, and let the pair earn its place.
3 arms
your single, 2 × C1 and 2 × C2, two 500 g candles each · CSI live pricing, September 2026
Quick answers — read this first
One large cotton wick overheats the centre of my 10 cm jar. Should I test two smaller wicks? Yes: test them, don't just switch. A single wick in a jar this wide has to reach glass about 4.65 cm away, and the size that gets there often runs a deep, hot centre first. Two wicks each serve half the pool. Pour a pair against your single and let the log decide.

Which pairs? With CSI wicks, two Eco C1 and two Eco C2, set about 4.65 cm apart on a line through the centre (a starting point for testing, not an answer), against your current single wick as the control.

Is my jar really 10 cm inside? Probably not. CSI's Apothecary jar lists "Diameter (outer rim): Approx. 10 cm" and calls itself "thick-walled". On a 0.35 cm wall (our assumption) the inside is 9.3 cm: a 67.93 cm² pool, not 78.54 cm². Measure yours.

What does the test cost? Six 500 g candles at 8% (two per arm): 240 g of oil, 2,760 g of wax, six jars, ten wicks, ₹4,087.90 of materials in the worked example, excluding labour, freight, packaging and GST.
The short answer
The verdict: an overheated centre under one big wick in a 10 cm jar is the cue to test a pair against it, not to guess a smaller single or a bigger one.
The geometry: at 9.3 cm inside, one wick serves 67.93 cm²; each of two serves 33.96 cm²; each of three serves 22.64 cm². Every figure is declared below.
The test: three arms, two candles each: your single (control), 2 × C1 and 2 × C2 at about 4.65 cm apart; 3–4 hour sessions, logged to about 1 cm left.
The honest limits: CSI's sized rungs are C1, C2 and Cotton Braided; the Apothecary is our only 10 cm listing, with outer figures only; and we list no jar at 11 or 12 cm by a stated diameter.
Shop: Apothecary Glass Candle Jar · Eco Candle Wicks C1/C2 · Cotton Braided Wicks · Candle Wick Stickers · all candle wicks
In this guide
One, two or three wicks in a 10 cm jar: what each wick has to melt Top views to scale (1.9 px per mm). Outer 100 mm; inside 93 mm on a 0.35 cm wall (our assumption, measure yours). Dashed lines split the pool into the share each wick serves. Spacings are labelled starting points, not answers. 46.5 mm 23 mm 46.5 mm apart 23 mm 1 · One wick serves 67.93 cm² 46.5 mm to the glass the whole pool, alone 2 · Two wicks each serves 33.96 cm² 23 mm to the wall on the line spacing = inside radius 3 · Three wicks each serves 22.64 cm² 23 mm to the wall, 40 mm apart circle radius = r / 2 Area each wick has to melt, square centimetres (bars to scale) One wick, 10 cm jar (9.3 cm inside) 67.93 Each of two wicks, 10 cm jar 33.96 Whole pool, CSI 7 cm listing (6.3 inside) 31.17 Each of three wicks, 10 cm jar 22.64 Whole pool, CSI 6 cm listing (5.3 inside) 22.06 Geometry, not a burn prediction: wax, oil, load, wick and room all change what a wick can melt. Worked example, not CSI data.
CSI's 10 cm Apothecary jar from above, at true scale, with one, two and three wicks. Grey is the pool area to the glass on a 0.35 cm wall (our assumption); the dashed lines split it into the share each wick serves. The bars compare that share with the whole pool of CSI's 7 cm and 6 cm listings. Spacings are labelled starting points for testing, and none of this is burn data.
The pair arms · C1 ₹118.00 for 20 · C2 ₹94.40 for 10
Eco Candle Wicks: two C1 and two C2 are the pairs a 10 cm test starts with
CSI's 10 cm listing · 500 gm ₹212.40 · in stock
Apothecary Glass Candle Jar with Dome Lid: outer rim approx. 10 cm, hot-pour up to 85°C
WhatsApp +91 7397976926
Send us your centre depth, flame height and inside diameter, and we will help you set the arms
Straight answer
I'm using a 10 cm wide jar and one large cotton wick overheats the centre. Should I test two smaller wicks instead?
Yes, test them: pour a pair against your single and decide on the log, not the look of one candle. In a jar about 9.3 cm across the inside, one centred wick has to push its pool 4.65 cm to reach the glass. The wick big enough to do that commonly builds a deep, hot centre and a tall flame long before the edge melts, which is what you are seeing. Two wicks set on a line through the centre each serve half the surface (33.96 cm² instead of 67.93 cm²) and sit about 2.33 cm from the wall along that line, so each can be smaller and the heat is spread. That is a tendency, not a promise: a pair can run hotter overall and leaves the two wall points at right angles to the wick line furthest from any flame. So run three arms, two candles each: your current single as the control, two Eco C1 and two Eco C2, spaced about 4.65 cm apart as a starting point. Judge each arm on time to the edge, pool depth (about 0.5–1 cm is a common target), trimmed flame height and soot, burn after burn, to about 1 cm left. If the C1 pair reaches the glass with a calm, shallow pool, it wins on heat; if only the C2 pair does, it is your candidate; if neither does, look at spacing and the ring-shape map before anything bigger.
One line: a hot centre under one big wick in 10 cm is a reason to pour a pair against it, 2 × C1 and 2 × C2, and let full-life logs decide.
If you already own your Cotton Braided and the jars: the two pair arms need Eco C1 (20 for ₹118.00; the 10-pack is out of stock on 29 September 2026) and Eco C2 (10 for ₹94.40): ₹212.40 in wicks, with spares for retests.
Eco C1/C2 — from ₹94.40

Why one big wick overheats the middle of a wide jar

A single wick melts outwards from one point. In a 10 cm jar, the glass is a long way from that point.

A wick's flame melts a roughly round pool that spreads from the wick outwards. In a 6 or 7 cm jar the glass is 2.5–3.5 cm from a centred wick, and a modest flame reaches it in a normal session. In CSI's 10 cm listing, read as the outside with a 0.35 cm wall, the glass is 4.65 cm away and the surface is 67.93 cm², about 2.2 times the whole pool of a CSI 7 cm listing. To melt all of that from one point, the wick must deliver a lot of heat to a small area first.

What happens next is common in wide single-wick candles, and it is what "overheats the centre" usually means: the pool under the wick gets deep (well past the 0.5–1 cm many makers aim for), the flame grows, carbon may cap the wick, and the edge is still solid or only just melting when the session ends. The wick is too big for the centre and not big enough for the edge at the same time. No single size solves both, which is why the next step is a second wick, not a third single size.

A pair changes the problem. Two wicks on a line through the centre each look after half the pool, and each sits about 2.33 cm from the wall along the wick line instead of 4.65 cm. Each can be smaller, the heat is spread over two points, and the centre no longer carries the whole candle. The trade-offs are real: two flames heat each other and the strip between them, total heat can be higher than with one wick, and the two wall points at right angles to the wick line stay the furthest from any flame. That is why this page tells you to test a pair rather than switch to one. How to read a leftover ring on a pair is the ring-shape post.

Before you blame the wick: three quick checks
Was the session long enough? A very rough rule of thumb is one hour per 2.5 cm of width: about 3.7 hours on a 9.3 cm inside, 4.0 on a full 10 cm, and a full pool within about 3–4 hours is a common expectation; both are rules of thumb, not CSI data. Was the air still? Ceiling fans and AC vents commonly push a flame and deepen one side. And is the wick upright and centred after the pour? A wick that drifted 5 mm reads as "hot on one side".

The oil matters, within limits. Spiced, vanilla-rich or resinous oils are commonly linked to needing more wick, and makers who push a single wick up to compensate are the ones who meet the hot centre. The worked example uses Autumn at 8%, inside its page's "Recommended fragrance load 7-11% for candles" and below CSI 464's "up to 10%" (the lower of the two ceilings governs), so the load is not the lever here. If your oil is vanilla at 10% and the wicks mushroom, that is the vanilla double-wick post.

CSI's 10 cm jar, and the 11–12 cm gap

One listing, outer figures only, and one capacity question we would rather you asked before buying.

The Apothecary Glass Candle Jar with Dome Lid is the only CSI container listing with a 10 cm diameter figure. Its page says "Diameter (outer rim): Approx. 10 cm", "Base diameter: Approx. 10 cm", "Height (without lid): Approx. 10.8 cm" and "Fill capacity: ~500 g - 700 g (2 sizes)", and it states "Safe for hot-pour up to 85°C". It is sold as 500 gm (₹212.40) and 700 gm (₹250.00), both in stock on 29 September 2026.

Three things the listing does not tell you. It gives the outside, not the inside, and it calls the jar "thick-walled": on our series' 0.35 cm wall the inside is 9.3 cm; at a 0.5 cm wall it would be 9.0 cm and 63.62 cm². It gives one set of dimensions for two capacities, so we cannot tell you from the page how 700 g fits the same outline. And the 85°C wording is a pour limit: it says nothing about how hot the glass may get while burning. With CSI 464, whose page says "Pour Temperature 80°C – 90°C", pour at 80–85°C in this jar.

1
Measure the inside at the rimRuler or inside callipers across the mouth, twice at right angles. Write both; a 10 cm "round" jar can be a few millimetres oval.
2
Measure the inside at mid-height and 1 cm above the baseCurl a card strip inside, mark the overlap, divide by 3.14. A curved silhouette changes the pool as the candle burns down; the external-versus-internal diameter post has the full method.
3
Weigh your fill lineTare the jar, add water to your planned fill line and weigh. Commonly used candle-maker rules of thumb put wax at roughly 0.86–0.9 times the water weight; confirm with a weighed test pour. Our worked example pours 500 g.
4
Stand a wick in the empty jarThe Eco wick page states no length in the text we captured, and Cotton Braided's says "Height of the wick is 10.16 cm". The wick must clear your wax surface with enough to trim to about 5–6 mm.
5
Measure three jars from the batchMass-produced glass varies. If inside diameters differ by more than a millimetre or two, label which jar each test candle went into.

The 11–12 cm gap. CSI lists no jar at 11 or 12 cm by any stated diameter. The nearest is the Reusuable Premium Glass Clip Top Airtight Glass Candle Container (₹229.00, "Wax Fill - 550g"), whose page says "Dimension- 11cm * 11cm * 10cm" without saying which figure is the height or the diameter, and states no heat wording in the text we captured. We will not tell you it is an 11 cm jar. Posts 4271–4280 are written for your own 11–12 cm jars; on a 0.35 cm wall an 11 cm outside is 83.32 cm² inside (23% more than our 10 cm) and a 12 cm outside is 100.29 cm² (48% more). Ask us on WhatsApp if you want a wider jar; we would rather say "not listed" than sell you the wrong one.

Mistake: reading "10 cm" off a listing and planning on a 10 cm pool. What happens: you plan for 78.54 cm² when a 0.35 cm wall leaves 67.93 cm², 16% more surface than the candle has; a thicker wall widens the gap. Fix: measure the inside at three heights before choosing arms, and judge the pool against the glass you measured.

The 10 cm configuration starter: one, two or three wicks

Diameter does not choose the wick. It does tell you how much surface each wick has to melt.

Here is the arithmetic that a 10 cm test starts from: pool area to the glass, the area each wick serves, and where the wicks sit at a labelled starting spacing. For a pair, the starting spacing puts each wick halfway between the centre and the glass, centre to centre equal to the inside radius. For three wicks, the starting point is a triangle on a circle of radius r/2. Both are geometry and starting points for testing, not burn predictions and not CSI data.

Configuration starter · 10 cm jar
π r² on the inside radius · the 9.3 cm column assumes a 0.35 cm wall on CSI's outer 10 cm · the 10 cm column is for a jar that measures 10 cm inside · every figure declared
Wicks Area each wick serves (9.3 cm inside) Area each wick serves (10 cm inside) Starting layout (labelled) Wick to wall at that layout (9.3 cm) Where it commonly fits
One, centred 67.93 cm² 78.54 cm² centre 4.65 cm all round where a single wick reaches the glass in about 3–4 h without a deep, hot centre
Two, on a diameter 33.96 cm² 39.27 cm² 4.65 cm apart (s = r) 2.33 cm along the wick line; further at right angles (see 4262) the usual first alternative when one wick overheats the centre
Three, in a triangle 22.64 cm² 26.18 cm² circle radius 2.33 cm, 4.03 cm apart 2.33 cm more common in 11–12 cm jars; in 10 cm, often more heat than the jar needs

Two things stand out. First, each wick of a pair serves 33.96 cm², a little more than the whole pool of a CSI 7 cm listing (31.17 cm² on the same wall assumption), which is why the pair arms in this cluster start with the wicks you would compare in a 7 cm jar. That translation, and why reading a single-wick chart at 10 cm misleads, is the first-two-sizes post. Second, each of three wicks would serve 22.64 cm², about the whole pool of a CSI 6 cm listing (22.06 cm²): three small flames in a 10 cm jar is a lot of total heat for the surface, so three wicks are not in this test. When a third wick earns a place is the three-wick threshold post.

Starting spacings for a pair · 10 cm listing
Two wicks on a diameter at centre-to-centre spacing s · wick to wall along the line = r − s/2 · geometry only; the spacing that works is found by testing
Spacing s (centre to centre) Wick to wall along the line, 9.3 cm inside Reading
3.5 cm 2.90 cm Close pair: centre strip runs hot, ends of the line lag. Commonly too close for 10 cm.
4.65 cm (s = r) 2.33 cm The halfway starting point this page uses: each wick halfway from centre to glass.
5.5 cm 1.90 cm Wide pair: wicks nearer the glass along the line; watch flame-to-glass distance and glass heat.

Spacing is its own variable. If your pair arms are inconclusive, the spacing ladder belongs to a separate test; don't change size and spacing in the same candle. Placement templates for three wicks are in the 12 cm placement post.

The pair-against-single test, costed

Three arms, two candles each, one variable. At 500 g a candle, the plan earns its keep.

Hold everything but the wick build: the same wax bag, the same oil and load on total weight, the same jar batch, 500 g fill, pour temperature, cure and room. The worked example uses CSI 464 and Autumn at 8%: 500 g = 40 g of oil + 460 g of wax. Two candles per arm is the minimum that shows an odd candle; three is better if your budget allows, and at this size a third candle per arm adds ₹674.72 or more in materials.

Test arms · 10 cm jar · worked example
Two candles per arm · 500 g at 8% Autumn in CSI 464 · Apothecary 500 gm · the only thing that changes is the wick build
Arm Wick build Layout Candles Wicks used Why it is in the test
A (control) Your current single: one Cotton Braided in the worked example centred 2 2 the candle you already have, poured again so it shares wax, oil and cure with the pairs
B Two Eco C1 4.65 cm apart on a diameter 2 4 the smallest pair CSI lists; the heat-friendly arm
C Two Eco C2 4.65 cm apart on a diameter 2 4 the next pair; the arm most likely to reach the edge in time
1
Set the wicksOne 10 mm sticker per wick base. Mark the two positions on a card disc cut to the inside diameter, lay it in the jar, press the tabs through the marks. Hold the tops with a card strip punched at 4.65 cm and taped across the rim: CSI's Steel Wick Holder page says "up to 9 cm wide", so we don't claim it fits this jar.
2
Pour all six the same dayCSI 464 at 80–85°C (its page's 80–90°C, limited by the jar's 85°C pour wording), pre-warmed clean jars, a still room. Label bases A1, A2, B1, B2, C1, C2.
3
Cure identicallyThe Autumn page states no cure time in the text we captured; the 25 of 102 CSI oil pages that do say 48–72 hours for soy, and many makers wait about a week before judging. Pick one and keep it the same for all six.
4
Burn 3–4 hour sessionsTrim to about 5–6 mm before each burn (one CSI trimmer page says "Trim your wick to 1/4 inch before every burn"). Full cool-down between sessions. Burn within sight, in still air.
5
Log the same things at the same clock timesAt 1, 2 and 3 hours: time the pool first meets the glass, the ring at the glass at 0°, 90°, 180° and 270° from the wick line, pool depth beside each wick and in the centre, trimmed flame height, mushrooming and soot. Judge glass heat with a non-contact thermometer if you own one (CSI lists none), never by touch.
6
Continue to about 1 cm leftThe first three burns decide which arms keep going; the final third decides approval. Wide jars commonly change behaviour as the wax falls, and a pair that is right at the top can run hot near the bottom.
Bill of materials · six-candle test · worked example
Autumn 500 g · CSI 464 three × 1 kg · Apothecary 500 gm × 6 · Cotton Braided 10 · Eco C1 20 · Eco C2 10 · stickers 40 · CSI live pricing, 29 September 2026
Item Size bought Used Cost of what is used
Autumn Fragrance Oil 500 g, ₹2,714.00 (₹5.43/g) 240 g (40 g × 6; 260 g left) ₹1,302.72
Luxury Soy Wax CSI 464 3 × 1 kg, ₹1,522.20 (₹0.51/g) 2,760 g (460 g × 6; 240 g left) ₹1,400.42
Apothecary Glass Candle Jar, 500 gm 6 × ₹212.40 6 jars ₹1,274.40
Cotton Braided Wicks Ready Made 10, ₹120.00 2 (8 spare) ₹24.00
Eco Candle Wicks, Thin (C1) 20, ₹118.00 (10-pack out of stock) 4 (16 spare) ₹23.60
Eco Candle Wicks, Thick (C2) 10, ₹94.40 4 (6 spare) ₹37.76
Candle Wick Stickers 40, ₹100.00 10 ₹25.00
Test, materials consumed 6 candles ₹4,087.90

Per candle, before stickers: ₹674.92 on one Cotton Braided, ₹674.72 on two C1 and ₹681.80 on two C2 (₹217.12 of oil, ₹233.40 of wax, ₹212.40 of jar and the wicks). The wicks are the smallest line: a C1 pair costs ₹0.20 less than one Cotton Braided, and a C2 pair ₹6.88 more. Costs are worked examples and exclude labour, freight, packaging and GST. From nothing, the cash outlay is ₹5,943.00; the 260 g of oil left covers 6 retest candles.

Mistake: changing the wick and the load together because "the pair will need less oil". What happens: if the pair wins, you cannot say whether the wicks or the load did it, and the load you settle on was never tested with the wick you keep. Fix: keep 8% in every arm. If the winning pair is clean but the throw disappoints, change the load afterwards, on that pair; that sequence is the load-first lavender post.

Reading the result, and when to buy nothing

The pair does not win by being a pair. It wins by reaching the glass without the hot centre.
Decision rule · after burn 3 (our judgement, labelled)
"Passes" = both candles in the arm reach the glass all round by the end of burn 2 or 3, centre depth about 0.5–1 cm, trimmed flame about 2.5–5 cm, no persistent soot or heavy mushrooming · then full life decides
What the arms show What it points to Next step Purchase
Control A still overheats the centre; B (2 × C1) passes Heat spread over two small wicks does what one large wick could not Carry B to about 1 cm left; watch the final third C1 for production only after full life
B leaves a ring at the glass; C (2 × C2) passes The pair needs the next rung Carry C to full life; in the final third check flame height and glass C2 packs after full life
B and C both pass Take the lower-heat pair unless its throw fails Full life on B; keep C as a documented fallback Nothing more yet
C passes the edge but its centre runs as deep as A's Two C2 is a lot of wick for this jar and oil Your answer may sit between CSI's rungs; ask us, and check spacing Possibly another supplier's wick
Both pairs leave wax at the two wall points at right angles to the wick line Geometry of a pair, not wick power Read the ring shape before changing size: 4262 Nothing yet
Neither pair reaches the glass in about 4 hours Low power, or the session, room or measurements are off Re-measure the inside; confirm still air; then read the four-hours-to-the-edge gate Nothing yet

Thresholds are our judgement, chosen because they can be read with a ruler and a skewer; the depth and flame figures are commonly cited rules of thumb. Keep your standard fixed across all six candles. A pair that reaches the glass within an hour is the opposite problem, and the one-hour pair post owns it.

When the right purchase is nothing: if your "overheated centre" came from a session in a draught, from a wick that drifted after the pour, or from a single burn cut short, re-pour one control candle, set it in still air and log three proper sessions first. If the centre stays calm and the pool reaches the glass, you do not need a pair at all. Argued against our own interest: we sell the second wick; we would still rather you found out it was the fan.
What not to buy yet: a production pack of either Eco rung (the price per wick is the same in every pack size, so a big pack saves nothing until a pair has passed full life); Performance Wooden Wicks (₹590.00 for 10), one listing with no widths to step between; 5 kg or 10 kg of CSI 464 (flat ₹0.51 a gram from 1 kg); Autumn 1 kg (no cheaper per gram than 50 g); and more oil to push to 10% (50 g a candle, ₹54.28 extra), which does nothing for a hot centre.
Safety at this size
A 500 g candle burns for many sessions, and a wide jar's final third is where heat commonly builds. Stop every test at about 1 cm left, keep candles apart and away from anything that can catch, and never judge the glass by touching it. When a pair seems fine for half the candle and hot near the bottom, the life-cycle approach is the multi-wick life-cycle post; glass behaviour in the final burns is the final-burn jar-heat post.

Buying list for the 10 cm pair test

Six items, in the order the test needs them, chosen on page statements, price and stock on 29 September 2026. CSI publishes no wick-performance data, so nothing here is ranked on burn results. Oil candles are counted at 40 g (500 g fill) and 12 g (150 g).

1
jar · CSI's only 10 cm listing
Apothecary Glass Candle Jar with Dome Lid
The page lists "Diameter (outer rim): Approx. 10 cm", "Base diameter: Approx. 10 cm", "Height (without lid): Approx. 10.8 cm", "Fill capacity: ~500 g - 700 g (2 sizes)" and "Safe for hot-pour up to 85°C", and calls the vessel "thick-walled". That is the outside of the jar, and one set of dimensions for two capacities. The 85°C wording is a pour limit, not a burn rating. Argued against our own interest: we cannot tell you from the listing how a 700 g fill fits the same 10 × 10.8 cm outline; before buying the 700 gm for a test, ask us to measure one. Per gram of stated capacity the 700 gm is cheaper (₹0.36 against ₹0.42), but a jar you cannot fill to your wick's test height is no saving.
Pack Price Per unit What it covers here
500 gm ₹212.40 ₹212.40 the worked example: a 500 g fill, six jars for the test
700 gm ₹250.00 ₹250.00 same stated dimensions as the 500 gm; ask before buying (below)
Six jars for the test: ₹1,274.40. Buy 500 gm — ₹212.40
2
wick · the pair rungs
Eco Candle Wicks — Thin (C1) and Thick (C2)
The two arms of the pair. The page describes wicks of "natural fibers like cotton and paper" and states no length, width or jar range in the text we captured, so check one against the Apothecary's 10.8 cm height before you buy for production: a wick must stand clear of a 500 g fill with room to trim. Stock on 29 September 2026: the C1 10-pack is out of stock; every other pack is in, at a flat ₹5.90 (C1) and ₹9.44 (C2) per wick. A C1 pair costs ₹11.80 a candle, ₹0.20 less than one Cotton Braided; a C2 pair costs ₹18.88.
Pack Price Per unit What it covers here
Thin (C1) / 10 ₹59.00 — Out of stock ₹5.90 Out of stock on 29 September 2026
Thin (C1) / 20 ₹118.00 ₹5.90 two C1 pairs, 16 spare
Thin (C1) / 50 · 100 · 500 · 1000 ₹295.00 · ₹590.00 · ₹2,950.00 · ₹5,900.00 ₹5.90 production, after full life
Thick (C2) / 10 ₹94.40 ₹9.44 two C2 pairs, 6 spare
Thick (C2) / 20 · 50 · 100 · 500 · 1000 ₹188.80 · ₹472.00 · ₹944.00 · ₹4,720.00 · ₹9,440.00 ₹9.44 production, after full life
Test: C1 20 + C2 10 = ₹212.40. Buy C2 10 — ₹94.40
3
wick · the control, and CSI's top rung
Cotton Braided Wicks Ready Made
Probably the "large cotton wick" in your question, and the control arm. The page says it is "engineered for large-diameter candles exceeding 8 cm" and "Height of the wick is 10.16 cm"; "preventing tunneling" is the page's claim. At 10 cm it sits inside the range its page describes, which is exactly why it gets a fair control arm rather than being written off. Honest limit: it is CSI's largest sized, tabbed rung, and there is no sized wick between a C2 pair and it.
Pack Price Per unit What it covers here
Pack of 10 ₹120.00 ₹12.00 two control candles, 8 spare
Pack of 50 · 100 · 500 · 1000 ₹600.00 · ₹1,200.00 · ₹6,000.00 · ₹12,000.00 ₹12.00 flat per wick; only after full life
Two control candles: ₹24.00. Buy 10 — ₹120.00
4
fragrance oil · spiced fruit · the worked example
Autumn
The worked example's oil, chosen because a spiced oil with an oak, amber and vanilla base is the kind commonly linked to needing more wick, which is how single-wick candles in wide jars drift into oversized wicks (a tendency, not CSI data). The page states "Recommended fragrance load 7-11% for candles" and "crisp red apple, cinnamon leaf, and orange zest top notes, golden maple, clove bud, and nutmeg middle notes, and warm oak, amber, and vanilla base". Its 11% top is above CSI 464's "up to 10%", so in that wax the lower ceiling, 10%, governs; 8% sits inside both. It states no cure time in the text we captured, and its "9-13% for wax melts" is a melt figure, not a candle load. Every size is in stock on 29 September 2026. Argued against our own interest: from 50 g to 1 kg it is ₹5.43 a gram, so the 1 kg (₹5,428.00) saves nothing per gram; buy the 500 g, which covers the six candles (240 g) and leaves 260 g.
Size Price Per gram 500 g candles (10 cm) at 8% 150 g candles at 8%
15 g ₹94.40 ₹6.29 0 1
50 g ₹271.40 ₹5.43 1 4
100 g ₹542.80 ₹5.43 2 8
500 g ₹2,714.00 ₹5.43 12 41
1 kg ₹5,428.00 ₹5.43 25 83
Six candles: 240 g = ₹1,302.72. Buy 500 g — ₹2,714.00
5
wax · the soy the worked example uses
Luxury Soy Wax CSI 464 (Flakes Form) For Container Candles
The page states "Fragrance Load Up to 10%" and "Pour Temperature 80°C – 90°C"; with the Apothecary's "Safe for hot-pour up to 85°C", pour at 80–85°C, the lower limit governing. If your wax differs, run the test in your own wax: wick results do not transfer between waxes. Argued against our own interest: the price is flat at ₹0.51 a gram from 1 kg to 10 kg, so three 1 kg bags (₹1,522.20) cover the test and a 5 kg bag buys only unused wax.
Pack Price Per unit What it covers here
500 g ₹260.00 ₹0.52 per g one test candle, not six
1 kg ₹507.40 ₹0.51 per g buy three: 2,760 g for six candles, 240 g left
5 kg ₹2,537.00 ₹0.51 per g no cheaper per gram than 1 kg
10 kg ₹5,074.00 ₹0.51 per g production, once a build has passed full life
Six candles: 2,760 g = ₹1,400.42. Buy 1 kg — ₹507.40
6
tool · holding a pair where CSI's holders stop
Candle Wick Stickers (40)
Two wicks need two fixed bases. The page describes "10mm Candle Wick Round Stickers" with "Strong Adhesion" that "keeps your wick firmly in place, even through hot wax pours". The top of the wick is the harder part in this jar: the Steel Wick Holder's page says it fits jars "up to 9 cm wide", and the Wick Centering Device has one hole. Argued against our own interest: a strip of card with two holes punched at your spacing, taped across the rim, holds a pair as well as anything we sell for this jar, and costs nothing.
Pack Price Per unit What it covers here
1 sheet - 40 stickers ₹100.00 ₹2.50 10 for the test, the rest for retests
1 sheet - 100 stickers ₹236.00 — Out of stock ₹2.36 Out of stock on 29 September 2026
10 stickers: ₹25.00. Buy 40 — ₹100.00
Diwali is 8 November 2026, 40 days from 29 September 2026. A 10 cm test poured this week and cured about a week can show which arm leads by mid-October; a 500 g candle's full life takes many sessions after that, so start now or plan the pair for Christmas (25 December 2026). Send us your candle count for a quote on Apothecary jars, wicks, oil and wax with a GST invoice and a dispatch date.
WhatsApp a Diwali quote

Map of this cluster: 4261–4280

This page owns the short answer, the 10 cm configuration starter, the pair-against-single test and CSI's honest jar gap. Each other post owns one test for one situation in 10–12 cm, multi-wick candles.

Cluster map · 4262–4280
10 cm pairs (4262–4270), 11 cm two or three (4271–4272), three-wick geometry and heat (4273–4276), environment, throw and life cycle (4277–4279), commercial test budget (4280)
No. What the post answers (linked)
4262 Two wicks, wax left at the perimeter: read the ring's shape (even = power, perpendicular-heavy = geometry) before pouring anything.
4263 Choosing the first two sizes for a pair: each wick serves half the pool, so bracket as if around a 7 cm single.
4264 A pair that reaches the glass inside an hour: a three-arm step-down (2 × C2, 2 × C1, one Cotton Braided).
4265 Four hours to the edge with clean flames: the continue-or-change gate and a parallel run one rung up.
4266 One of two wicks always burns larger: rotate the jar and swap positions to find the cause.
4267 Identical wicks, one keeps drowning: a level-and-position audit of base, table and wick seating.
4268 Both wicks mushroom at 10% vanilla: step the pair down first, the load second, never both in one candle.
4269 Coffee with great throw and too much soot: the smallest cut in total wick power that clears the soot.
4270 Lavender burns cleanly but throws weakly: change the load before the wicks.
4271 An 11 cm jar with an uneven pool on two wicks: coverage maths for 2 × C2 against 3 × C1.
4272 Two or three wicks for 11 cm: a scorecard beyond diameter (burn life, heat, labour, session length).
4273 Three small wicks, a hot centre: triangle geometry and a spacing ladder.
4274 Placing three wicks in a 12 cm jar: a paper template at 120 degrees, fixed and re-checked.
4275 A 12 cm jar that gets hotter every burn: a same-clock, per-session trend chart.
4276 Three wicks with 8% oud: identical sizes or mixed, and what mixing costs in production.
4277 Uneven under a ceiling fan: a draught test that separates the room from the wick.
4278 Three-wick luxury candle: is the throw diffusion or just heat? Throw per gram burned.
4279 Fine for half, too hot near the bottom: a life-cycle spec sheet for a multi-wick candle.
4280 Commercialising a 12 cm three-wick candle: how many full burn tests, and what they cost.

Coming from 8.5–9 cm jars? The previous hub is the thick-ring, single-or-double post. Planning several jar sizes at once is the commercial wick-matrix hub.

The CSI principle
In a wide jar, test the pair against the single; never swap on a hunch.
One big wick that overheats the centre is telling you about the jar's width, not asking for a different single size. Two small wicks spread the heat, but only a logged, full-life test shows whether they do it in your wax, oil and room.
"A wide jar asks one wick to do two jobs: stay calm in the middle and reach the glass. Two wicks split the jobs. The log tells you whether they split them well."
— CandleMakingSuppliesIndia
Why trust this guide

CandleMakingSuppliesIndia sells the jar, wicks, oil and wax named here, and does not sell finished candles. This page still tells you that the answer may be a draught rather than a second wick, that our wick range has no sized step between a C2 pair and Cotton Braided, that our only 10 cm jar lists outer figures, and that we list no jar at 11 or 12 cm by a stated diameter.

Every price was verified on CSI's live store on 29 September 2026. Stock was checked per size: the Eco C1 10-pack and the 100-sticker sheet are out of stock on that date and are flagged wherever they appear; every other size shown is in stock. Jar, wick, load and temperature wording is quoted from the product pages; where a page is silent in the text we captured, we say so.

The 0.35 cm wall, the 500 g fill, the starting spacings and the decision thresholds are our judgement or worked examples; melt-pool times, depths and flame heights are commonly cited rules of thumb, not CSI data; CSI publishes no wick-performance data. For bulk pricing, GST invoicing, and MSDS and IFRA documentation on request, message us on WhatsApp at +91 7397976926.

Frequently asked questions

Is it better to use two wicks in a 10 cm candle jar?
Often, but test it. In a jar about 9–10 cm across the inside, one wick commonly overheats the centre before it reaches the glass, and two smaller wicks each serve half the pool. Pour a pair against your single, two candles each, and compare time to the edge, depth, flame and soot to about 1 cm left.
How far apart should two wicks be in a 10 cm jar?
A common starting point puts each wick halfway between the centre and the glass: centre to centre equal to the inside radius, about 4.65 cm on a 9.3 cm inside. It is a starting point for testing, not an answer.
What wick size do I need for a 10 cm candle?
No single wick fits every 10 cm candle: wax, oil, load and the inside diameter all change it. With CSI wicks, the usual first test is a pair of Eco C1 against a pair of Eco C2, with your current single as the control.
Why does my candle get a deep hot centre but leave wax at the edge?
In a wide jar, the wick big enough to reach the glass commonly builds a deep, hot pool around itself first. It is a sign the jar may be too wide for one wick, not that you need a still larger one. Check still air and centring, then test a pair.
Can I use the Steel Wick Holder for a 10 cm jar?
Its page says it fits jars up to 9 cm wide, so we don't claim it fits a 10 cm jar. A strip of card punched at your spacing and taped across the rim holds two wicks well, with a sticker under each wick.
Does CSI sell an 11 cm or 12 cm candle jar?
No jar at 11 or 12 cm is listed by a stated diameter. The clip-top container says "11cm * 11cm * 10cm" without saying which is the height, so we do not call it an 11 cm jar. Ask us on WhatsApp if you need a wider jar.
Before you change the wick again
Pour a pair against your single: 2 × C1 and 2 × C2 cost ₹212.40 in wicks.
Measure the inside at three heights, set two wicks about half the inside diameter apart, pour three arms of two candles, and log the edge, depth, flame and soot through the full life. Send us the log on WhatsApp.
Shop Eco C1/C2 wicks Send your centre-depth log on WhatsApp
Continue the read — 10–12 cm jars and multi-wick problems
Editorial standards & sources
About this guide: the hub page for CSI's cluster on 10–12 cm jars and multi-wick problems (4261–4280): the short answer for a single wick that overheats the centre, CSI's 10 cm jar and the 11–12 cm gap, a configuration starter for one, two and three wicks with declared geometry, a costed pair-against-single test, a labelled decision rule, and a map of the cluster.

Customer reviews: The six reviews at the top of this page are genuine, published Judge.me reviews left by CSI customers on the product pages named on each card — Autumn, Cinnamon Vanilla, Eco Candle Wicks, Luxury Soy Wax CSI 464 (Flakes Form) For Container Candles. They are general product reviews, not assessments of the wick advice on this page. Names, star ratings, dates and products are as recorded by Judge.me and wording is unedited. "Verified buyer" appears only on reviews Judge.me recorded as verified — M A, Punam Sarma, Subhankar Roy, Thenirvaofficial, Jaya Sawlani. The reviews from Ashwini are published but not recorded as verified, and carry no badge. Reviews below five stars are included as published, not filtered out.

Figures verified 29 September 2026, CSI live pricing: Apothecary Glass Candle Jar with Dome Lid 500 gm ₹212.40, 700 gm ₹250.00; Reusuable Premium Glass Clip Top Airtight Glass Candle Container ₹229.00; Eco Candle Wicks Thin (C1) 10 ₹59.00 (out of stock), 20 ₹118.00, 50 ₹295.00, 100 ₹590.00, 500 ₹2,950.00, 1,000 ₹5,900.00; Thick (C2) 10 ₹94.40, 20 ₹188.80, 50 ₹472.00, 100 ₹944.00, 500 ₹4,720.00, 1,000 ₹9,440.00; Cotton Braided Wicks Ready Made 10 ₹120.00, 50 ₹600.00, 100 ₹1,200.00, 500 ₹6,000.00, 1,000 ₹12,000.00; Candle Wick Stickers 40 ₹100.00, 100 ₹236.00 (out of stock); Steel Wick Holder (Set of 5) ₹250.00; Performance Wooden Wicks 10 ₹590.00; Autumn 15 g ₹94.40 (₹6.29/g), 50 g ₹271.40, 100 g ₹542.80, 500 g ₹2,714.00, 1 kg ₹5,428.00 (₹5.43/g each); Luxury Soy Wax CSI 464 500 g ₹260.00, 1 kg ₹507.40, 5 kg ₹2,537.00, 10 kg ₹5,074.00. Every other size listed is in stock on 29 September 2026. Per unit = price ÷ grams or units, two decimals.

Non-price figures: load is a percentage of total candle weight (500 g at 8% = 40 g oil + 460 g wax; the standard 150 g candle at 8% = 12 g). The 500 g fill is a worked example within the Apothecary page's stated "~500 g - 700 g". The 0.35 cm wall is an assumption; pool area = π r² on the inside radius; spacings (s = r for a pair, ρ = r/2 for three) are labelled starting points. Ceilings are as the pages state (CSI 464 up to 10%, pour 80–90°C; Autumn 7–11% for candles, so CSI 464's 10% governs): formulation limits, not regulatory ones. Melt-pool times (about 3–4 hours; about an hour per 2.5 cm), depth (about 0.5–1 cm) and flame height (about 2.5–5 cm) are commonly cited rules of thumb. The decision rule is editorial judgement. Costs exclude labour, freight, packaging and GST. Diwali 8 November 2026 and Christmas 25 December 2026 are calendar facts.
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