I’m Designing a Rectangular Candle Vessel — How Do I Determine Wick Number and Placement When Diameter Is Not a Useful Measurement?
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How many wicks for a 15 × 8 cm rectangle? Test two and three. Two wicks give each a nearly square cell of 60 cm²; three give long, narrow cells of 40 cm². Our starting count is length ÷ width (1.88), rounded: two, with three as the arm above. That is a starting point, not a rule.
What do I buy? Three arms of three candles: 2 × C2, 3 × C1 and 3 × C2. Eco C1 20-pack (₹118.00) + Eco C2 20-pack (₹188.80) + a 40-sheet of wick stickers (₹100.00) = ₹406.80. Optionally a 10-pack of Steel Wick Holders (₹500.00) laid across the width, one per wick.
Does CSI sell a rectangular candle vessel? Not in our jar listings. The only containers described as square or rectangular are square wax-melt containers and a 10 g rectangular solid-perfume tin. The vessel and its geometry are yours; ask us if you need one sourced.
- Straight answer: width for reach, length for count
- First, the honest part: whose vessel this is
- From L × W to wick candidates
- The buy list for three arms
- Placing wicks in a line, and holding them there
- What a rectangle has to pass
- From the winning arm to production quantity
- What to buy, and what to skip
- Frequently asked questions
First, the honest part: whose vessel this is
From L × W to wick candidates
The method is three numbers per layout, all geometry and none a burn prediction. Put the wicks on the centre line of the long axis and give each an equal cell. Then for each layout read: the area each wick must melt, the reach to the long walls, and the reach to the farthest corner.
| Wicks | Cell | Area per wick | Same area as a round jar | To long walls | To farthest corner | Spacing |
|---|---|---|---|---|---|---|
| 1 | 15 × 8 cm | 120 cm² | 12.36 cm | 4.0 cm | 8.50 cm | — |
| 2 | 7.5 × 8 cm | 60 cm² | 8.74 cm | 4.0 cm | 5.48 cm | 7.5 cm |
| 3 | 5 × 8 cm | 40 cm² | 7.14 cm | 4.0 cm | 4.72 cm | 5.0 cm |
Read it as a buyer. One wick is out: a single flame would have to reach 8.50 cm to the corners, which no CSI tabbed wick claims. With two, each cell is close to square (0.94) and about the size of an 8.74 cm round jar: the territory where an 8 cm round jar's single-wick rungs (C2, Cotton Braided) sit, so 2 × C2 is the natural first arm. With three, each cell is narrow (0.62) and about a 7.14 cm round jar's area, which points at smaller wicks, but every wick still has to reach 4.0 cm to the long walls. That is why the three-wick layout gets two arms, 3 × C1 (enough across?) and 3 × C2 (too hot between?), and the two-wick layout one.
Two cautions from the round-jar posts carry over. The zone between neighbours is heated from both sides, so the narrower the cells, the more that middle runs hot; that is the double-wick strip problem in the strip-between-two-wicks post, with one more neighbour. And two vessels of the same weight can need completely different systems when one is tall and narrow and the other short and wide: the tall versus wide post. An oval is a related but different shape, with no corners and a curved wall: the oval jar post.
The buy list for three arms
The 600 g fill is a worked example: a 15 × 8 cm vessel filled to 6 cm holds about 720 g of water, and a commonly used rule of thumb puts wax at roughly 0.86–0.9 of that (619 g–648 g); weigh a test pour in your own vessel. Load stays at 8% of total candle weight, CSI's convention (48 g of oil + 552 g of wax).
| Item | Count needed | Smallest in-stock pack | Price | Per unit | Left over |
|---|---|---|---|---|---|
| Eco C1 (3 × C1 arm) | 3 × 3 = 9 | 20 (10-pack out of stock) | ₹118.00 | ₹5.90 | 11 |
| Eco C2 (2 × C2 and 3 × C2 arms) | 6 + 9 = 15 | 20 | ₹188.80 | ₹9.44 | 5 |
| Candle Wick Stickers | 24 tabs | 1 sheet of 40 (100-sheet out of stock) | ₹100.00 | ₹2.50 | 16 |
| Wicks and stickers | 24 wicks, 9 candles | three items | ₹406.80 | — | — |
| Lemongrass and Lime | 432 g | 500 g | ₹2,600.00 | ₹5.20 per g | 68 g |
| Luxury Soy Wax Chunks | 4,968 g | 5 kg + 500 g | ₹3,294.00 | ₹0.60 per g | 532 g |
| Steel Wick Holder (optional) | one per wick per pour | Pack of 10 | ₹500.00 | ₹50.00 | reusable |
| Your vessels | 9 | your supplier | yours | — | — |
From nothing, the ladder costs ₹6,300.80 in cash before vessels; ₹6,800.80 with ten steel holders. Already own the oil and wax? Then it is ₹406.80. The nine candles consume ₹5,476.93 of materials, which excludes your vessels, labour, freight, packaging and GST.
| Arm | Wicks a candle | Stickers a candle | Per candle | Arm of three |
|---|---|---|---|---|
| 2 × C2 | ₹18.88 | ₹5.00 | ₹604.13 | ₹1,812.38 |
| 3 × C1 | ₹17.70 | ₹7.50 | ₹605.45 | ₹1,816.34 |
| 3 × C2 | ₹28.32 | ₹7.50 | ₹616.07 | ₹1,848.20 |
Each candle carries ₹249.60 of oil and ₹330.65 of wax (₹580.25 before wicks); the wicks are 4.6% of even the dearest arm. Two C2 cost ₹1.18 more a candle than three C1, but three C1 need a third tab, a third sticker and a third placement. In a rectangle, the count is a labour and fixture decision as much as a wick one.
Placing wicks in a line, and holding them there
Fixtures for a production line are counted per pour batch, not per candle, because a holder is busy until the wax sets: the fixture-count post. Turning the approved spacing into a written fixture spec is the spacing-to-spec post.
What a rectangle has to pass
The same two gates as every ladder in this series, with rectangle-specific checks. Gate 1, by burn 3: all three candles of an arm melt to both long walls; corner wax is within the limit you set in advance; the zones between wicks are no deeper than the pool beside each wick; flames upright, no soot. Gate 2, the full life to about 1 cm left: still true, with no flame growing near the bottom and walls not running hot where a wick sits close (judge by eye, or with a non-contact thermometer, which CSI does not list; never by touch). Commonly cited rules of thumb put pool depth at about 0.5–1 cm and flame height at about 2.5–5 cm; the corner limit is your judgement, because many rectangular candles keep a little corner wax for life.
| 2 × C2 | 3 × C1 | 3 × C2 | Reading and next step |
|---|---|---|---|
| Passes, corners acceptable | any | any | Two wicks: fewer tabs and placements; take it to full life |
| Long walls melt, ends and corners hang | Passes | Hot between wicks | Three C1: the narrow cells needed small flames |
| Long walls melt, ends hang | Long walls stay solid | Passes | Three C2; check the zones between wicks in the final third |
| Long walls stay solid | Long walls stay solid | Hot between wicks, walls still solid | The width is the problem: a wider-reaching wick per cell (two Cotton Braided) or a narrower vessel; ask us |
| Two of three candles pass | Not decided: re-pour that arm from your spare wicks | ||
Why prefer fewer wicks on a tie: every extra wick is a tab, a sticker, a fixture position and a placement to get wrong, on every candle you will ever pour. How far down a test candle must go before it counts, and what only shows in the second half, is the second-half problems post.
From the winning arm to production quantity
Once an arm passes the full life: wicks = candles × wicks per candle × (1 + allowance), 5% as our worked-example allowance. Because C1 and C2 are flat per wick, buy packs that sum to the number.
| Winning arm | Wicks | Packs that cover it | Stickers |
|---|---|---|---|
| 2 × C2 | 420 | 4 × 100 + 1 × 20 = ₹3,964.80 | 11 sheets = ₹1,100.00 |
| 3 × C1 | 630 | 6 × 100 + 1 × 50 = ₹3,835.00 | 16 sheets = ₹1,600.00 |
| 3 × C2 | 630 | 6 × 100 + 1 × 50 = ₹6,136.00 | 16 sheets = ₹1,600.00 |
| For scale: Lemongrass and Lime 9,600 g | — | 10 × 1 kg = ₹52,000.00 | — |
Three C1 and two C2 land close in wick money (₹3,835.00 against ₹3,964.80 for 200 candles); the stickers and placements are where three wicks cost more. The oil (₹52,000.00) dwarfs both: the expensive mistake is 200 rectangles of Lemongrass and Lime poured on an unapproved layout. The general formula and the flat-per-wick explainer live in the cluster-one hub; if three wicks win and the middle one runs hot, the size-per-position question is the hot-centre triple post. Record the layout, spacing and fixture in your approved matrix (the approved-matrix post) so the next order buys the same thing.
What to buy, and what to skip
Five items, in the order the ladder needs them, chosen on page statements, price and stock on 1 October 2026. CSI publishes no wick-performance data, so nothing here is ranked on burn results. Oil candle counts use 48 g per 600 g candle and 12 g per standard 150 g candle.
| Pack | Price | Per unit | What it covers here |
|---|---|---|---|
| Thin (C1) / 10 | ₹59.00 — Out of stock | ₹5.90 | Out of stock on 1 October 2026 |
| Thin (C1) / 20 | ₹118.00 | ₹5.90 | the 3 × C1 arm (9 wicks), 11 spare |
| Thin (C1) / 50 · 100 · 500 · 1000 | ₹295.00 · ₹590.00 · ₹2,950.00 · ₹5,900.00 | ₹5.90 | production only, after full life |
| Thick (C2) / 10 | ₹94.40 | ₹9.44 | one arm only; the two C2 arms need 15 |
| Thick (C2) / 20 | ₹188.80 | ₹9.44 | 2 × C2 and 3 × C2 arms (15 wicks), 5 spare |
| Thick (C2) / 50 | ₹472.00 | ₹9.44 | not yet: the same per wick |
| Thick (C2) / 100 · 500 · 1000 | ₹944.00 · ₹4,720.00 · ₹9,440.00 | ₹9.44 | production only, after full life |
| Pack | Price | Per unit | What it covers here |
|---|---|---|---|
| Pack of 5 | ₹250.00 | ₹50.00 | one wick position each |
| Pack of 10 | ₹500.00 | ₹50.00 | one three-wick arm (9 positions) per pour |
| Pack of 25 | ₹1,250.00 | ₹50.00 | all 24 positions at once; production pours |
| Pack | Price | Per unit | What it covers here |
|---|---|---|---|
| 1 sheet - 40 stickers | ₹100.00 | ₹2.50 | 24 tabs, 16 spare |
| 1 sheet - 100 stickers | ₹236.00 — Out of stock | ₹2.36 | Out of stock on 1 October 2026 |
| Size | Price | Per gram | 600 g candles at 8% (48 g) | 150 g candles at 8% (12 g) |
|---|---|---|---|---|
| 15 g | ₹116.52 | ₹7.77 | none (a sniff sample) | 1 |
| 50 g | ₹330.00 | ₹6.60 | 1 | 4 |
| 100 g | ₹590.00 | ₹5.90 | 2 | 8 |
| 500 g | ₹2,600.00 | ₹5.20 | 10 | 41 |
| 1000 g | ₹5,200.00 | ₹5.20 | 20 | 83 |
| Pack | Price | Per unit | What it covers here |
|---|---|---|---|
| 500 g | ₹299.00 | ₹0.60 per g | tops up the 5 kg: 532 g left |
| 1 kg | ₹599.00 | ₹0.60 per g | the same per gram as 5 kg |
| 5 kg | ₹2,995.00 | ₹0.60 per g | nine candles need 4,968 g; 32 g left |
| 10 kg | ₹5,999.00 | ₹0.60 per g | production; no cheaper per gram |
Skip for this ladder: Cotton Braided (₹120.00 for 10): only if every arm leaves the long walls solid. Performance Wooden Wicks (₹590.00 for 10): one width, and a wooden line layout is its own test. Eco Braided Wicks (₹472.00 for 5 m): unsized and untabbed in the text we captured; no use until a tabbed arm has failed. The Wick Centering Device (₹118.00 for 5): one hole for a centred single, which a line layout does not have.
CandleMakingSuppliesIndia sells the wicks, holders, stickers, oil and wax named here, and does not sell finished candles. This page still tells you that we list no rectangular candle vessel, that card strips work as well as our steel holders for a test, that our steel holder only spans the width, and that the bigger wick packs save nothing per wick.
Every price was verified on CSI's live store on 1 October 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. Product wording is quoted from the pages; where a page is silent in the text we captured, we say so.
The 15 × 8 cm vessel, the 600 g fill, the length ÷ width starting count, the likely two-C2 answer, the arm readouts, the 5% allowance and the 200-candle order are our judgement or worked examples; melt-pool depths and flame heights are commonly cited rules of thumb, not CSI data. For bulk pricing, GST invoicing, and MSDS and IFRA documentation on request, message us on WhatsApp at +91 7397976926.
Frequently asked questions
- I Want to Use Wooden Wicks in My Soy Candles for the Appearance — How Should I Test Whether They Actually Burn as Reliably as Cotton Wicks in My Formula?
- I Have an Oval Candle Jar — Should I Use Multiple Wicks Because One Central Wick Cannot Create an Even Melt Pool Across the Long Dimension?
- My Container Is Very Wide but Shallow — How Should Vessel Geometry Affect My Choice Between One, Two and Three Wicks?
- I Want a Three-Wick 500 g Candle — How Should I Choose Initial Wick Sizes and Spacing Without Simply Dividing One Large Wick by Three?
- My Three-Wick Candle Burns Much Hotter in the Centre than Near the Walls — Should I Change Spacing, Wick Size or Both?
- How Far Apart Should I Position Two Wicks in a Wide Jar Before Deciding Whether Their Sizes Are Correct?
- I Want a Double-Wick Candle — Is It Better to Use Two Identical Smaller Wicks Rather than One Oversized Central Wick?
- How Do I Choose Between Cotton, Wooden, Single, Double and Triple-Wick Configurations Based on Vessel Geometry, Wax, Fragrance and Commercial Repeatability?
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 — Bamboo Wick Holder, Eco Candle Wicks, Luxury Soy Wax Chunks for Jar / Container Candles, Tin Containers for Candle Making - 85 & 135g. They are general product reviews, not assessments of the wick-purchase 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 — Sakshi Jain, Kaushiki Satarkar, Monika Deep, Jinal Monil. The reviews from Ashwini, Lalitha Jagan are published but not recorded as verified, and carry no badge. Reviews below five stars are included as published, not filtered out.
Figures verified 1 October 2026, CSI live pricing: 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; Steel Wick Holder 5 ₹250.00, 10 ₹500.00, 25 ₹1,250.00; Candle Wick Stickers 40 ₹100.00, 100 ₹236.00 (out of stock); Wick Centering Device (Pack of 5) ₹118.00; Performance Wooden Wicks 10 ₹590.00; Eco Braided Wicks 5 m ₹472.00; Lemongrass and Lime 15 g ₹116.52 (₹7.77/g), 50 g ₹330.00 (₹6.60/g), 100 g ₹590.00 (₹5.90/g), 500 g ₹2,600.00 (₹5.20/g), 1 kg ₹5,200.00 (₹5.20/g); Luxury Soy Wax Chunks 500 g ₹299.00, 1 kg ₹599.00, 5 kg ₹2,995.00, 10 kg ₹5,999.00. Per unit = price ÷ grams or units, two decimals.
Non-price figures: load is a percentage of total candle weight (600 g at 8% = 48 g oil + 552 g wax). The 15 × 8 cm inside vessel and the 600 g fill are labelled assumptions; area = L × W; reach to long walls = W ÷ 2; corner reach = √((cell ÷ 2)² + (W ÷ 2)²); geometry, not burn prediction. The wax rule of thumb (0.86–0.9 × water weight) is labelled as such. Ceilings as the pages state them (Lemongrass and Lime "6-10% for candles"; Chunks "up to 13% fragrance load capacity", basis ambiguous): formulation limits, not regulatory ones. Melt-pool depths (about 0.5–1 cm) and flame heights (about 2.5–5 cm) are commonly cited rules of thumb. The starting count, likely answer, arm readouts, 5% allowance and 200-candle order are editorial judgement and worked examples. Costs exclude vessels, labour, freight, packaging and GST. Christmas 25 December 2026 is a calendar fact.

