Founding User Access
The first 30 candle makers get free lifetime access in exchange for honest feedback.
Wick sizing, calmly.
Find the right wick
faster.
A pocket lab for candle makers. Tell us your jar, wax, and fragrance — we'll match you to the right wick family and a clean test plan.
What makers say
Reviews
It's amazing ,I wish I had this when I started out, it would have saved me so much time and effort. I love that it recommends the type of wicks that I already have.
@ candles_by_michelle_2026.
I am new to this app but I am already LOVING it!! Thank you so much for this.
Anonymous
Field guide
Common candle problems
Tunneling+
Likely cause — Wick is too small for the diameter — the melt pool never reaches the jar wall.
Possible fix — Size up one wick step, or burn at least 1 hour per inch of diameter on the first light.
Soot & black smoke+
Likely cause — Wick is too large, trimmed too long, or fragrance/dye load is too high.
Possible fix — Trim to 5 mm before every burn. Size down one wick. Reduce fragrance to 8–9%.
Drowning wick+
Likely cause — Wick is too small or fragrance oil pools around the flame.
Possible fix — Size up, switch to a stiffer family (CD or LX), or reduce fragrance load by 1–2%.
Weak scent throw+
Likely cause — Melt pool isn't reaching full diameter, or fragrance load is too low.
Possible fix — Increase wick size, increase fragrance to 8–10%, and cure candles 7–14 days before testing.
Uneven burn+
Likely cause — Wick is off-center, draft in the room, or wax has memory rings.
Possible fix — Re-center the wick while warm. Burn away from drafts. Allow full melt pool on first burn.