My Candle Burns Unevenly Only Near the Bottom Even Though the Wick Is Centred — Could the Shape or Thickness of the Glass Base Be Affecting Heat Distribution?
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Wick Centering Device ₹118.00 for 5 Steel Wick Holder from ₹250.00 for 5 150 g Clear Glass Jar ₹944.00 for 10
Uneven only at the bottom · the spot, the wick or the glass?
Rule out the surface, the air and a leaning wick before you blame the jar.
★★★★★
"The jars were of good quality"
Soumili GopeVerified buyer · Mar 2026
Clear Glass Jar with Golden Lid (150 gram)
★★★★★
"Good product"
Biny AbrahamVerified buyer · Feb 2026
Black Glass Jar with Black Lid (150 gram) (Deliveries Starting 5th Dec)
★★★★☆
"I like the material of tin jar no doubt but some are little dent but the Mandala design is awesome. One more thing its difficult to open after I ready my candle and closed with lid its had to open, its both good point and the same time difficult to work. Thankyou"
Jinal MonilVerified buyer · Mar 2026
Tin Containers for Candle Making - 85 & 135g
★★★★☆
"For candle making and new beginner this is very helpful, i came to know about them from Sosa candle, Sonal guide us in youtube about product materials and everything she suggested this, I trusted her and gave a try, and it is authentic product and other materials too. Sometimes it happens that all materials didnt reach me, they take the responsibility and send me. The team is co-operative in nature and friendly too. If i ordered liquid colors or fragrance that too packed so well that there is no leakage also my packaged item where misplaced by delivery boy i guess (i didn't remember properly) they sent it again they took all that responsibility that gains the trust. Only i felt little costly during checkout when its kg amount calculated (ho sakhe todha kam kar do,haha). Overall had great experience with them. Thankyou so much 👍😊"
JinalOct 2025
Ceramic Jar for Candle Making
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"Very good"
Tina Lynette Lazaro MogantiVerified buyer · Dec 2025
Black Matte Glass Jar
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"Nice glass jars, they look cute. I like the packaging as well."
AshwiniSep 2025
White Matte Glass Jar
★★★★★
"The jars were of good quality"
Soumili GopeVerified buyer · Mar 2026
Clear Glass Jar with Golden Lid (150 gram)
★★★★★
"Good product"
Biny AbrahamVerified buyer · Feb 2026
Black Glass Jar with Black Lid (150 gram) (Deliveries Starting 5th Dec)
★★★★☆
"I like the material of tin jar no doubt but some are little dent but the Mandala design is awesome. One more thing its difficult to open after I ready my candle and closed with lid its had to open, its both good point and the same time difficult to work. Thankyou"
Jinal MonilVerified buyer · Mar 2026
Tin Containers for Candle Making - 85 & 135g
★★★★☆
"For candle making and new beginner this is very helpful, i came to know about them from Sosa candle, Sonal guide us in youtube about product materials and everything she suggested this, I trusted her and gave a try, and it is authentic product and other materials too. Sometimes it happens that all materials didnt reach me, they take the responsibility and send me. The team is co-operative in nature and friendly too. If i ordered liquid colors or fragrance that too packed so well that there is no leakage also my packaged item where misplaced by delivery boy i guess (i didn't remember properly) they sent it again they took all that responsibility that gains the trust. Only i felt little costly during checkout when its kg amount calculated (ho sakhe todha kam kar do,haha). Overall had great experience with them. Thankyou so much 👍😊"
JinalOct 2025
Ceramic Jar for Candle Making
★★★★★
"Very good"
Tina Lynette Lazaro MogantiVerified buyer · Dec 2025
Black Matte Glass Jar
★★★★★
"Nice glass jars, they look cute. I like the packaging as well."
AshwiniSep 2025
White Matte Glass Jar
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.
✓ Prices verified 26 September 2026, stock checked per size ✓ MSDS and IFRA documentation on request on WhatsApp ✓ Raw materials only — CSI does not sell finished candles
CSI Diagnostics · Uneven at the Bottom
Near the floor the pool is shallow and small asymmetries show. Level the spot, still the air and straighten the wick first; then turn the jar. Only wax that follows the glass points at the glass.
180°
one turn of the jar separates the room from the glass · CSI live pricing, September 2026
Quick answers — read this first
Why does my candle burn evenly until near the bottom, then leave wax on one side? In our judgement, most often because of something outside the formula: the surface isn't level or there is a draught, and a shallow pool near the floor shows it more. Next, the wick is centred at the tab but leans at the top by the time the flame is low. Less often, the jar itself: a base that isn't flat, or glass thicker on one side.Could the glass base really affect heat distribution? It can, as a tendency: uneven glass can warm and hold heat unevenly, and a base that isn't flat changes the wax depth from side to side. But it is the last suspect, not the first, and it is the one you can check on an empty twin jar in five minutes.
How do I find out? A base audit (rock test, light test for thickness, wick lean, level surface, draughts), then a controlled reburn on a level, draught-free spot with centring checked every burn. After two burns, turn the jar 180° against the room: wax that stays facing the room is the spot; wax that turns with the glass is the jar or the wick.
Do I need to buy anything? Usually not. The audit and reburn use the candle you have. A re-pour with the wick held straight costs ₹422.24 in materials for two candles (worked example), and holders start at ₹118.00 for five.
The short answer
Suspect order (judgement): surface not level → draught → wick leaning at depth → one wall thicker → an uneven base. Most common first, which here is also cheapest to check first (both judgement).
The audit: five checks on the candle and an empty twin jar from the same batch: rock test, light test, lean check, level check, air check.
The reburn: level, still spot; tape mark at 12 o'clock; centring checked before every burn; after two burns, turn the jar 180° against the room.
The rule: wax stays facing the room = surface or air (buy nothing). Wax turns with the glass = the jar or the wick (re-pour straight, or audit the batch).
In this guide
Five uneven-bottom patterns seen from above, with a centred wick, and the rotation rule that sorts them. Surface and draught patterns stay with the room when the jar is turned; a leaning wick, a thicker wall and an uneven base turn with the glass. The drawings are schematic and the pairings are our judgement; the reburn confirms them.
Five holders · ₹118.00
Wick Centering Device: keeps a wick upright while wax sets, at the pour and between burns
Stainless · up to 9 cm jars · from ₹250.00
Steel Wick Holder: a rigid holder for re-pouring a batch straight
WhatsApp +91 7397976926
Send your audit results and reburn photos; we'll help you read them
Straight answer
My candle burns unevenly only near the bottom even though the wick is centred. Could the shape or thickness of the glass base be affecting heat distribution?
It could, but check three cheaper causes first, because in our judgement they are more common. Near the floor the pool is shallow and the flame is low in the jar, so small outside effects show more: a surface that isn't level lets the pool run to one side; a draught pushes the flame away from the air and leaves wax on the side facing it. "Centred" usually means centred at the tab: the wick can still lean at the top as it gets low, and the flame follows the tip, not the tab. Only then the glass: a jar whose base isn't flat holds the wax deeper on one side, and glass that is thicker on one side can warm and hold heat unevenly (a tendency). To find out, audit an empty twin jar from the same batch (does it rock; does the glass look thicker on one side against the light), check the burn spot with a level, and reburn the candle on a level, draught-free spot, checking the wick is straight before every burn. After two burns, turn the jar 180° against the room. Wax that stays facing the room is the spot, and nothing needs buying; wax that turns with the glass is the wick or the jar.
One line: level the spot, still the air, straighten the wick, then turn the jar; only wax that follows the glass convicts the glass.
If the wick leans low in the jar: a pack of five Wick Centering Devices costs ₹118.00 (₹23.60 each) and holds a wick upright while wax sets, at the pour and between burns. In stock on 26 September 2026.
Buy 5 — ₹118.00
Why a lopsided burn shows up low in the jar
Near the rim, the pool is deep enough to hide a tilt. Near the floor, it isn't.
Early burns tend to forgive small asymmetries. The pool is wide open to the room, the flame sits high, and a slight tilt or a faint air current makes little difference to where the wax melts. Low in the jar, three things change. The flame sits in a glass tube, so any air that reaches it arrives from one direction. The remaining wax is a thin disc, so a surface a little out of level moves the pool noticeably to one side. And the wick has had many burns to bend: a wick that stood straight when poured can lean by the time only its lower part is left. Heat on the glass also builds as the level falls, which is why the late-burn hub treats the lower third as its own stage.
The glass itself matters here too, as a tendency. A jar whose inside floor isn't flat holds a thicker layer of wax on one side, which melts later. Glass that is thicker on one side can warm more slowly and hold heat differently from the thin side, and uneven wall and base thickness are among the commonly cited contributors to uneven heating. How a thick base changes the last centimetre is the subject of the thick-base post, and thick-base, thin-wall jars have their own watch-list; this page stays with diagnosing your jar. Jars that narrow towards the floor are a different cause with a different test, in the narrow-bottom post.
Uneven near the bottom · what to suspect first
Ranked most common first (judgement) · each with the observation that rules it in or out
| # | Suspect | Rules it in | Rules it out | Costs to fix |
|---|---|---|---|---|
| 1 | Surface not level | A level or phone level shows a tilt; wax stands on the uphill side | Still uneven on a checked level spot | Nothing |
| 2 | Draught (fan, AC, window, door) | Flame leans; wax stands on the side facing the air | Still uneven in a closed, still room | Nothing |
| 3 | Wick leaning at depth | Tip off-centre from above while the tab is centred | Tip over the tab at every check | Holders, from ₹118.00 |
| 4 | One wall thicker | Empty twin shows a thick side against the light; wax stands there | Walls look even; wax side doesn't match | A different jar or batch |
| 5 | Uneven base | Empty twin rocks on a flat surface; a ledge low on one side | Twin sits firm; floor looks flat | A different jar or batch |
Mistake: blaming the jar because the wick is "definitely centred". What it misses: "centred" was true at the pour, at the tab. What steers the flame near the floor is where the wick tip is on that burn. Fix: check the tip from above, before every burn, with a ruler across the rim; the tab is visible from below through clear glass.
The base audit: five checks, one empty twin
An empty jar from the same batch can answer the glass question before you burn another candle.
You need the uneven candle, one or two empty jars from the same batch, a ruler, a flat reference surface (a glass shelf or a stone counter), and a level: a spirit level or a phone's level app (CSI does not list one). Glass varies between batches, so jars from a different order prove nothing about this one; for measuring a batch sample properly, see the batch-variation post.
1
Rock testStand each empty twin on the flat surface and press gently on the rim at four points. A jar that rocks has a base that isn't flat. Mark the low side. Check the uneven candle's own jar the same way once it is cold.
2
Light test for thicknessHold an empty twin up to a window and turn it slowly. Look for a wall or a side of the base that looks visibly thicker, or a floor that is thicker on one side. Measure wall thickness at the rim at 12, 3, 6 and 9 o'clock with a ruler; note any side that stands out.
3
Lean check on the candleWith the candle cold, look down from above: is the wick tip over the tab? Look from the side through the glass: is the wick straight, bent, or leaning? Record the tip's offset from the centre in millimetres.
4
Level check on the burn spotPut the level where the candle usually burns, in two directions. A shelf, a windowsill or a tray on a cushion is often further out than it looks.
5
Air checkList fans, AC vents, windows and doors near the spot. Light the candle and watch the flame for a minute: a lean or a flicker towards one side is air. Note which side of the jar faces the air source, using your tape mark.
Write the five results next to the side where wax was left standing. If that side matches the uphill side of the spot, the side facing the air or the direction the wick leans, you already have a strong lead. If it matches the thick side or the low side of a rocking jar, the glass moves up the list. The reburn confirms either way.
What the jar page says, and what you check
The 150 g jar's page lists a rim of about 7 cm and a base of about 6.5 cm (outer dimensions), so the outside steps in by about 2.5 mm a side towards the floor; that is a design feature, not a fault, and it is outer glass, not the inside floor. The page also claims "thick glass walls and broad base provide excellent stability and even heat distribution". That describes the design; the rock and light tests check the pieces in your hand.The controlled reburn and the rotation rule
Take away the tilt and the air, keep the wick straight, then turn the jar. What's left is the glass.
The reburn uses the uneven candle itself, and an unburned twin from the same pour if you have one (the twin will be at the top of its jar, so read it later at matching depth). No new materials. What makes it controlled is that the three cheapest causes are removed on purpose, one burn after another, and the fourth question is asked by turning the jar.
1
Choose a level, still spotChecked level in two directions; door shut, fan and AC off, away from windows. Put a tape mark on the jar at 12 o'clock and face it at one fixed wall.
2
Check centring before every burnWith the wax set, measure the wick tip against the centre with a ruler across the rim. If it leans, deal with it at the end of the next burn: once the flame is out and while the pool is still liquid, straighten the wick gently with a tool, never your fingers, and lay a centering device or two pencils across the rim so it re-sets upright (a practice some makers use; judgement). Trim before every burn; the trimmer page's tip is "Trim your wick to 1/4 inch before every burn".
3
Burn two sessions, same orientationUp to about four hours each (common practice), until the pool reaches the edge where it can. Photograph from above at the end: where does wax still stand, at which o'clock? Burn within sight. Never judge glass heat by touch; if you want a number, use a non-contact thermometer (CSI does not list one).
4
Turn the jar 180° against the roomThe tape mark now faces away from the wall. Burn two more sessions exactly as before and photograph again.
5
Read the photographs by o'clockIf the standing wax stayed on the same side of the room (it moved round the jar's own clock), the cause is outside the jar. If it stayed at the same o'clock on the jar, it is travelling with the glass or the wick.
6
Stop at about 1 cmA common-practice stopping point; don't chase the last millimetres of a lopsided burn, where heat on the glass floor is building.
Mistake: moving the candle to the level spot and straightening the wick and turning it, all on the first evening. What it does: if the burn evens out, you cannot say which change did it, and you will re-pour or reorder for the wrong reason. Fix: write down the audit readings first (tilt, air source, tip offset), so whichever was off names the cause; then two burns level, still and straight, and rotation last.
What each outcome means, and costs
Three of the five answers cost nothing. The other two cost a holder or a conversation about a batch.
Decision rule · base audit + controlled reburn
Read the photos at the same o'clock before and after turning the jar
| What the reburn shows | Audit agrees? | What it points to | Next step | Purchase |
|---|---|---|---|---|
| Burns even on the level, still spot | Spot was tilted or draughty | Surface or air | Care card: "burn on a level surface, away from draughts" | Nothing |
| Still uneven; wax stays facing the room after turning | Air check found a source | Air you haven't removed yet | Find a stiller spot; check AC vents | Nothing |
| Evens out once the wick is kept straight | Tip was off-centre | Wick leaning at depth | Re-pour with the wick held upright until fully set; check lean before every burn | Holders, from ₹118.00 |
| Still uneven; wax turns with the glass; wick straight | Thick side or rocking base matches | The jar | Set that jar aside; audit a sample of the batch; test a pair in jars that pass | Only if the batch fails |
| Still uneven; wax turns with the glass; audit finds nothing | No | Unresolved: the jar shape or wick at depth | Diameter profile (3255); wick behaviour late in the jar (3244) | Nothing yet |
For the wick-leaning branch, re-pour a pair with the wick held upright until the wax has fully set. Worked example: two 150 g candles at 8% of total weight in CSI 464, 24 g of oil and 276 g of wax (12 g + 138 g each), your own oil (priced here at Citrus Lemon's 50 g rate as an example), your usual wick, two 150 g jars, and a holder on each; pour at 80–85°C in the 150 g jar (CSI 464 says 80–90°C and the jar "Safe for hot pour up to 85°C"; the lower limit governs), and keep the load inside both the oil page's range and the wax ceiling.
Bill of materials · re-pour pair, wick held straight · worked example
Only for the wick-leaning branch · CSI live pricing, 26 September 2026
| Item | Size bought | Used | Cost of what is used |
|---|---|---|---|
| Your oil (priced at Citrus Lemon, 50 g) | 50 g, ₹170.00 (₹3.40/g) | 24 g | ₹81.60 |
| Luxury Soy Wax CSI 464 | 1 kg, ₹507.40 (₹0.51/g) | 276 g | ₹140.04 |
| Clear Glass Jar with Golden Lid (150 gram) | Pack of 10, ₹944.00 | 2 jars | ₹188.80 |
| Eco Candle Wicks, Thin (C1) | 10 wicks, ₹59.00 | 2 (worked example; your own wick) | ₹11.80 |
| Re-pour pair, materials | 2 candles | ₹422.24 (₹211.12 each) | |
| Wick Centering Device (reusable) | Pack of 5, ₹118.00 | 2, kept | ₹118.00 for the pack, if you have nothing to hold wicks |
Costs exclude labour, freight, packaging and GST, and the holders are reusable, so they are a one-off rather than a per-candle cost. For the jar branch, don't reorder yet: measure a sample of the batch against the batch-variation approach, set aside the pieces that rock or show a thick side, and tell us on WhatsApp which jar and batch.
What not to buy yet: a bigger or double wick to "melt the stubborn side": a lopsided pool from a tilt, a draught or a lean needs the cause removed, and a hotter wick raises heat on the glass in exactly the part of the jar where it is already building. A new jar design because one candle burned unevenly: audit the batch first. Both holder types: the wooden device (₹118.00 for five) and the steel holder (₹250.00 for five) do the same job for this purpose.
When the right purchase is nothing: if the burn evened out on a level, still spot, your candle is fine and your customer's shelf was the problem. Put the level-surface and draught lines on your care card. In our judgement that is how most "uneven only at the bottom" questions end.
Holders, jars and wicks, if you need them
Four items for the two branches that can involve a purchase: two ways to hold a wick straight, a jar for a matched-batch retest, and the same wick for the re-pour. Chosen on page statements, price per unit and stock on 26 September 2026; CSI has no measured burn data, so nothing is ranked on performance.
1
tool · keeping the wick upright while wax sets
Wick Centering Device (Pack of 5)
If the audit finds a wick that leans low in the jar, the fix starts at the pour and continues between burns. The page describes a natural wood holder, "Length 4.4" (11,4 cm)", "Hole Dia 0,15" (4mm)", for "centering and holding wicks straight in the container while the wax sets", and for openings "less than 4"" (about 10.2 cm), which covers the 150 g jar. Some makers also lay one across the jar after extinguishing so the wick re-sets upright (judgement). In stock on 26 September 2026 at ₹23.60 a piece. Argued against our own interest: two pencils and a clothes peg do the same job; buy these for convenience across a batch, not for one diagnosis. The Bamboo Wick Holder set of five is the same ₹118.00.
| Size | Price | Per unit | What it covers |
|---|---|---|---|
| Pack of 5 | ₹118.00 | ₹23.60 | holding the wick upright while the pool re-sets, and at the re-pour |
Five holders: ₹118.00. Buy 5 — ₹118.00
2
tool · a rigid holder for the re-pour
Steel Wick Holder (Set of 5)
A heavier, reusable option when a batch of jars needs every wick held straight through cooling. The page says "Heavy-duty stainless steel", a "3-hole layout fits single, double, or triple wick setups", fits jars "up to 9 cm wide", and claims it "Keeps the wick upright and centered during the entire curing process". The 150 g jar's stated 7 cm outer diameter is 2 cm inside that. Every pack is in stock on 26 September 2026 at ₹50.00 a holder, whatever the pack. Argued against our own interest: it holds the wick at the top, not the tab at the floor; if a tab lifted, that is a sticker problem (3249). And at ₹26.40 more per piece than the wooden device, it earns its place only if you pour often.
| Size | Price | Per unit | What it covers |
|---|---|---|---|
| Pack of 5 | ₹250.00 | ₹50.00 | a re-pour pair with three spare |
| Pack of 10 | ₹500.00 | ₹50.00 | the same per holder; a production tray |
| Pack of 25 | ₹1,250.00 | ₹50.00 | the same per holder; production only |
Five holders: ₹250.00. Buy 5 — ₹250.00
3
container · a second batch for the audit
Clear Glass Jar with Golden Lid (150 gram)
If the rotation rule says "the glass", the next question is whether it is this jar or this batch. The page lists a height of 8 cm, an outer rim of about 7 cm, a base of about 6.5 cm, and says "Safe for hot pour up to 85°C". It also claims the "thick glass walls and broad base provide excellent stability and even heat distribution"; that is the page's claim about the design, and the audit checks your pieces. One inconsistency: the page calls the jar a "curved silhouette" in one place and a "clean, straight-sided surface" in another; judge the shape from the jar in your hand. Both packs are in stock on 26 September 2026 at ₹94.40 a jar. Argued against our own interest: if only one jar of ten rocks, set that one aside and tell us on WhatsApp; don't reorder a batch to fix one piece.
| Size | Price | Per unit | What it covers |
|---|---|---|---|
| Pack of 10 | ₹944.00 | ₹94.40 | a fresh batch for the audit and a re-pour pair |
| Pack of 20 | ₹1,888.00 | ₹94.40 | the same per jar; production only |
A pair for the re-pour: ₹188.80. Buy 10 — ₹944.00
4
wick · the same wick, re-poured straight
Eco Candle Wicks — Thin (C1) and Thick (C2)
For the re-pour, use the wick you already use; the point is to hold it straight, not to change it. The page describes wicks from "natural fibers like cotton and paper" that "pair perfectly with soy wax"; it names no jar. Every pack is in stock on 26 September 2026 at ₹5.90 (C1) and ₹9.44 (C2) per wick. Argued against our own interest: a wick size change is not a fix for any of the five patterns on this page; if the wick is centred and straight and the wax still stands on one side, look at the jar and the spot, not at our wick shelf.
| Size | Price | Per unit | What it covers |
|---|---|---|---|
| Thin (C1) / 10 | ₹59.00 | ₹5.90 | the re-pour pair (worked example), eight spare |
| Thick (C2) / 10 | ₹94.40 | ₹9.44 | if C2 is your production wick |
The re-pour pair: ₹11.80. Buy C1 — ₹59.00
Diwali is 8 November 2026, 43 days from 26 September 2026. The audit takes an afternoon and the reburn four sessions. If the answer is the jar batch, message us early with the batch details so replacements or a different jar can be tested before production. Send us your results for a quote on jars, holders, wicks and wax with a GST invoice and dispatch date.
WhatsApp a Diwali quote
The CSI principle
Level the spot, still the air, straighten the wick, then turn the jar.
Only wax that follows the glass after all three convicts the glass, and even then the batch, not the design, is the first thing to audit.
"A candle that burns lopsided only at the bottom is usually telling you about the shelf before it tells you about the jar."
— CandleMakingSuppliesIndia
Why trust this guide
CandleMakingSuppliesIndia sells the jars, holders and wicks named here, and does not sell finished candles. This page still ranks our jar last among the suspects, tells you that pencils hold a wick as well as our holders for a diagnosis, that one holder type is enough, and that a single rocking jar is a reason to message us, not to reorder.
Every price and per-unit figure was verified on CSI's live store on 26 September 2026; every pack in the pick tables is in stock on that date. Jar, holder and wick wording is quoted from the product pages, including the jar page's own inconsistency about its shape; where a page is silent in the text we captured, we say so.
The suspect ranking, the five-check audit, the rotation rule and the reburn order are editorial judgement; the four-hour cap and stopping at about 1 cm are common practice; the diagram is schematic; CSI publishes no measured burn data. For bulk pricing, GST invoicing, and MSDS and IFRA documentation on request, message us on WhatsApp at +91 7397976926.
Frequently asked questions
Why does my candle burn unevenly at the bottom of the jar?
Near the floor the pool is shallow and the flame sits low, so a surface that isn't level, a draught or a wick leaning at the tip shows more. Less often, the jar's base isn't flat or one wall is thicker. Reburn on a level, still spot with the wick straight, then turn the jar 180° to see whether the wax follows the room or the glass.
Can a thick or uneven glass base make a candle burn unevenly?
It can contribute: a base that isn't flat leaves wax deeper on one side, and glass thicker on one side can warm unevenly (a tendency). Check an empty twin jar from the same batch: does it rock on a flat surface, and does one side look thicker against the light?
My wick is centred, so why is the melt pool off to one side?
Usually the wick is centred at the tab but its tip leans by the time the flame is low, and the flame follows the tip. Check from above before every burn; if it leans, put the flame out, straighten it gently with a tool while the pool is still liquid, and let it re-set upright.
How do I keep a candle wick straight while the wax sets?
Hold it upright at the top until the wax has fully set: a wooden centering device, a steel holder, or two pencils across the rim. The tab still needs to be stuck flat to the floor with a sticker or glue; a holder keeps the wick straight, not the tab down.
Does an uneven surface affect how a candle burns?
Commonly yes, and most visibly near the bottom, where the pool is shallow: the melted wax runs to the low side and the high side is left standing. Check the spot with a level in two directions before blaming the candle.
Should I use a bigger wick if one side of my candle won't melt near the bottom?
Not before removing the cause. A tilt, a draught or a leaning wick needs fixing, not more heat, and a bigger wick adds heat low in the jar where it is already building. Level, still, straight, then turn the jar; only then consider the wick or the jar.
Before you blame the glass
Audit an empty twin, reburn on a level, still spot, and turn the jar.
Five checks and four sessions sort surface, air, wick lean and glass. If the wick leans, a pack of five centering devices (₹118.00) holds it straight while wax sets. If the wax follows the glass, message us with the jar and batch before you reorder anything.
Buy centering devices — ₹118.00 Send your audit on WhatsApp
Continue the read — burns correctly at first, then goes wrong
- My Candle Burns Perfectly During the First Test but the Flame Becomes Too Large Halfway Down the Jar — Why Does Wick Behaviour Change as the Candle Burns Lower?
- My Jar Has a Narrow Bottom and Wide Top — Why Does the Candle Burn Differently as It Moves Through the Changing Container Diameter?
- My Jar Narrows Toward the Bottom and the Flame Becomes Too Aggressive — Should I Choose Wick Size Based on the Narrowest Part of the Container?
- My Candle Burns Perfectly for the First 10 Hours but Starts Producing Soot Later — What Changes as the Candle Burns Deeper into the Container?
- My Wick Keeps Drowning Only When the Candle Reaches the Bottom Third of the Jar — What Could Cause Late-Stage Wick Failure?
- My Candle Jar Is Safe During the First Half but Becomes Extremely Hot Near the Bottom — Should I Use a Smaller Wick Even if That Causes a Slower Initial Melt Pool?
- My Candle Tunnels During Early Burns but Becomes Too Hot During Later Burns — How Do I Choose a Wick When One Size Doesn’t Seem Perfect Throughout the Jar?
- How Far Down Should I Burn a Test Candle Before Deciding the Wax, Wick and Jar Combination Is Commercially Acceptable?
Editorial standards & sources
About this guide: part of CSI's cluster on candles that burn correctly at first and then go wrong (3241–3260). This page owns the base audit (rock test, light test for thickness, wick lean, level surface, draughts) on the candle and an empty twin jar, a controlled reburn on a level, draught-free spot with centring checked every burn, the rotation rule that separates causes outside the jar from causes in the glass or wick, and a decision rule with costs.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 — Black Glass Jar with Black Lid (150 gram) (Deliveries Starting 5th Dec), Black Matte Glass Jar, Ceramic Jar for Candle Making, Clear Glass Jar with Golden Lid (150 gram), Tin Containers for Candle Making - 85 & 135g, White Matte Glass Jar. They are general product reviews, not assessments of the diagnostic 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 — Soumili Gope, Biny Abraham, Jinal Monil, Tina Lynette Lazaro Moganti. The reviews from Jinal, 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 26 September 2026, CSI live pricing: Wick Centering Device (Pack of 5) ₹118.00; Bamboo Wick Holder (Set of 5) ₹118.00; Steel Wick Holder Pack of 5 ₹250.00, 10 ₹500.00, 25 ₹1,250.00; Clear Glass Jar with Golden Lid (150 gram) Pack of 10 ₹944.00, Pack of 20 ₹1,888.00; Eco Candle Wicks Thin (C1) 10 ₹59.00, Thick (C2) 10 ₹94.40; Luxury Soy Wax CSI 464 1 kg ₹507.40; Citrus Lemon Fragrance Oil 50 g ₹170.00 (₹3.40/g), used only to price a worked example. All in stock on 26 September 2026. Per unit = pack price ÷ units, two decimals; worked costs use the exact per-unit price, then round.
Non-price figures: load is a percentage of total candle weight (150 g at 8% = 12 g oil + 138 g wax). Temperatures and dimensions are as stated on the product pages (CSI 464 pour 80–90°C; 150 g jar hot pour up to 85°C, height 8 cm, outer rim about 7 cm, base about 6.5 cm; centering device 11.4 cm long, 4 mm hole, openings under 4 inches; steel holder up to 9 cm). The 2.5 mm step-in is arithmetic on outer dimensions. The suspect ranking, audit, rotation rule and reburn order are editorial judgement; the four-hour cap and 1 cm stop are common practice; the plan-view diagram is schematic. Costs exclude labour, freight, packaging and GST. Diwali 8 November 2026 is a calendar fact.