Choosing the right candle wick is the difference between a clean, even burn and a smoky, tunneling mess. This guide compares soy vs beeswax, maps jar diameter → wick size, and shares a quick burn-test so you get strong hot throw with minimal soot.
Quick verdict (TL;DR)
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Soy burns cooler → often needs a slightly hotter candle wick than paraffin to avoid tunneling.
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Beeswax is denser → often needs an even hotter wick (or a size up) to reach a full melt pool.
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Start from the chart below, then burn-test 2–3 cycles. Trim to 5–6 mm before each burn.
Soy vs Beeswax—how they behave
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Soy wax: Smooth, slow melt, cooler flame; prone to tunneling if the candle wick is undersized or the first burn is too short.
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Beeswax: Higher melt point; can mushroom/soot if the candle wick is oversized, but needs heat to open the melt pool.
Quick size guide by jar inner diameter
These are starting points. Fragrance %, dye, additives, room temp, and jar shape change performance—always test.
| Jar Inner Diameter | Soy Wax (start) | Beeswax (start) |
|---|---|---|
| 5–6 cm | ECO 6 / CD 4 / HTP 52 | ECO 8 / CD 6 / HTP 62 |
| 6–7 cm | ECO 8 / CD 6–8 / HTP 62 | ECO 10 / CD 8–10 / HTP 72 |
| 7–8 cm | ECO 10 / CD 10–12 / HTP 72 | ECO 12 / CD 12–14 / HTP 83 |
| 8–9 cm | ECO 12 / CD 14 / HTP 83 | ECO 14 / CD 16 / HTP 93 |
| 9–10 cm | ECO 14 / CD 16–18 / HTP 93 | ECO 16 / CD 18–20 / HTP 104 |
Wooden wicks (single): 5–6 cm → 0.5″, 7–8 cm → 0.625″, 9–10 cm → 0.75″. For beeswax, go one size thicker.
Need help choosing a candle wick? Browse ECO, CD, LX, HTP, Wooden here: Candle Wicks – Cosmo Wholesale
Fragrance load ranges (hot throw vs soot)
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Soy: 6–10% typical. Start 7–8%; high loads can drown the flame → wick up one size if melt pool is weak.
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Beeswax: 3–6% typical. Natural aroma competes with FO; too much fragrance = smoke/soot → choose a hotter candle wick carefully and test.
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Essential oils: Be conservative; check IFRA; monitor wick for mushrooming.
Burn-test protocol (fast & reliable)
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Wick + tab: Center the candle wick with a glue tab; use a holder to keep it straight.
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Pour & cure: Pour per wax spec; cure 24–72 h for soy (follow your wax sheet for beeswax).
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Trim: Start at 5–6 mm before the first burn.
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First burn: 2–3 h; aim for a full melt pool touching jar edges (~1 cm deep).
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Assess: After cool, check tunneling, soot lines, mushroom cap, and melt-pool depth.
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Adjust: Tunneling? Wick up. Heavy soot/mushrooming? Wick down (and trim shorter).
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Repeat: Confirm over 3 burns to lock the right candle wick size.
Troubleshooting (quick fixes)
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Tunneling / walls left: Wick up one size; extend first burn to 3–4 h.
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Soot / big mushroom: Wick down; trim to 4–5 mm; reduce fragrance %.
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Weak hot throw: Increase FO within safe range; wick up slightly; ensure full cure time.
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Overheating jar: Wick down and limit burn length; check jar heat rating.
Wick types—when to choose what
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ECO: Cotton flat-braid; stable in soy; clean burn; good all-round candle wick.
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CD: Hotter series for plant waxes; great for beeswax and larger jars.
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LX: Consistent flame; useful with dyes/tints.
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HTP: Paper-core stability; handles heavier fragrance loads.
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Wooden: Modern look/crackle; size up for beeswax; test with different thicknesses.
Pakistan setup tips
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Ambient heat: Hot rooms soften wax → an oversized candle wick may soot; test in the room you’ll burn in.
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Airflow: Fans/drafts cause leaning flames and sooting—test in a closed room.
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Supply: Keep 2 neighboring sizes for each wick family so you can adjust quickly.
FAQs
1) Which candle wick is best for soy?
Start with ECO 8–12 or CD 6–12 depending on jar ⌀, then burn-test.
2) Why does my candle tunnel?
Wick too small or first burn too short. Wick up and let the first burn run 2–3 h.
3) Why am I getting soot and mushrooming?
Wick likely oversized, too much fragrance, or long untrimmed wick. Wick down and trim to 4–5 mm.
4) Can I use wooden wicks with beeswax?
Yes—choose a thicker wooden wick and test; beeswax needs more heat.
5) How do fragrance loads affect the wick?
Higher loads can drown the flame; you may need a hotter candle wick or to reduce FO %.
CTA
Find your size and fix tunneling/soot today.
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