Method. Wax grams = fill volume (ml) × wax density factor, adjusted because wax occupies its own volume: the working rule in candle forums and supplier sheets is g ≈ ml × 0.86 (soy), ×0.90 (paraffin), ×0.92 (coconut), ×0.96 (beeswax) — then add your waste buffer and split fragrance off at the load percentage. Volume from dimensions uses πr²h, sized to the fill line, not the rim.

Wicks. The guide tabs by vessel diameter: under ~6 cm a small cotton wick (e.g. ECO/LX 4–8 territory), 6–8 cm a medium (ECO 10–14), 8–10 cm a large, and wider than 10 cm start thinking two wicks. Those are starting points, not verdicts: always test-burn your own wax-fragrance-vessel trio — a wet spot or a tunnelling flame means the next size down or up.

Melting. Water-bath only, never direct heat. Follow your wax’s supplier figures: fragrance typically stirs in around 60–70 °C in by weight before the pour, poured at the wax’s recommended temperature to avoid sink holes and wet spots. Cure time matters — many container blends want a week or more before first burn.

Safety. Never leave melting wax; never pour wax down the drain (it sets — ask plumbers); pour on a covered surface; trim wicks to ~5 mm before every burn; and burn a fresh candle for one hour per inch of diameter the first time to set the memory ring.

Method: volume × density-factor arithmetic as used in supplier batch sheets; wick guidance is consensus starting-point sizing. Last reviewed 2026-09-21.