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Candle Wick Selection And Workshop Tips
The right wick diameter follows vessel size and wax type. Use varieties, coatings, and burn tests to build a balanced flame.
The wick is the candle’s heart: it feeds fuel to the flame and steers melt pool and scent throw. The wrong wick size tunnels or soots. At Rufus Concept we lock wick choice with vessel diameter, wax type, and measured tests—not a guessed number.
Why Diameter Matters
Larger inner diameters need more heat, so wick size steps up. An oversized wick in a narrow jar balloons the flame, soots, and burns fast. An undersized wick in a wide jar never reaches the walls—wax remains and tunnels later. Measure in millimetres and match a chart; eyeballing costs scrap in series work.
- Measure the narrowest inner diameter.
- Test scented and unscented recipes separately; oil changes wick load.
- Aim for a full surface melt on the first burn.
Wick Types
Cotton braids dominate jars and molds. Flat, square, and specialty series burn differently by wax fluidity. Wood wicks add crackle aesthetics; they must sit flat with the right width. Dual or triple wicks spread heat in wide vessels—spacing and centering are critical.
Soy often needs careful cotton sizing; paraffin may feed more readily but still needs tests. Firm beeswax usually wants a stronger wick. In gel, wick type and gel density are chosen together.
| Wax | Wick note | First test |
|---|---|---|
| Soy | Balanced cotton / right size | 2–3 hour burn |
| Paraffin | Classic cotton series | Flame and soot watch |
| Beeswax | Stronger feed | Melt-pool width |
| Wood wick | Level base, correct width | Crackle + soot check |
Why Coating Matters
Many wicks arrive waxed or specially coated for first light and upright posture. Wrong coating can lean, tip the flame, and blacken glass. Center when gluing; a tilted wick acts like the wrong size. Trim to 5–6 mm before each light—carbon mushrooms make soot.
How To Run A Wick Test
- Pour at least two wick sizes in the same vessel and wax.
- Lock fragrance % to the production recipe.
- Burn two hours minimum; log melt-pool diameter, flame height, and soot.
- Watch the smoke column on extinguish.
- Write the winner on the SKU card so operators stay consistent.
When you add stearic acid or hardeners, re-validate—extra firmness can starve the old size. Molded candles need channel and base checks. Store supply lots with wick codes to speed return analysis.
Safety And Presentation
Keep wicks short on the surface; never treat them like free liquid fuel. Put trim instructions on customer cards—many soot complaints are long wicks. With multi-wicks, keep equal spacing so one flame does not smother the others.
Summary: wick selection is diameter, wax type, coating, and disciplined burn tests. Compare two sizes instead of hunting “perfect” once. Logs with Rufus Concept wicks and bases make clean flame repeatable.
Mini Matrix Before Scaling
Three vessels × two wicks × one fragrance load fills a matrix in one afternoon and ends weeks of “why does it soot?” debates. Photograph, table, then produce. Retailers trust wholesale lines that show this discipline.
Common Wick Myths
“Bigger wick always means stronger scent” is false—oversized wicks often soot and mute top notes. “One wick size fits every soy jar” is false—jar geometry and fragrance load both move the target. Treat charts as starting points, burn tests as law.
When a customer returns a sooty jar, ask three questions: Did they trim? Was it drafty? How long was the first burn? Many “bad wick” tickets are use errors. Still, if your atelier skipped the matrix, fix the recipe quietly and update the SKU card.
Keep spare wick sizes of the winning series on the shelf next to supplies. Running out mid-season and substituting a “close enough” braid is how soot returns after months of clean burns.