Wick sizing depends on three variables: vessel inner diameter, wax type, and fragrance load percentage. As a starting point, most suppliers provide a sizing chart correlated to diameter in half-inch increments. Always run burn tests at your actual fragrance load — typically 6 to 12 percent for soy wax — recording melt pool width, mushrooming, and soot at two-hour intervals across at least three full burns before committing to a wick series.
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