# Wood Wick vs Cotton Wick: Flame, Crackle, Sizing and Which to Choose Source: https://candlemakingnest.com/blog/wood-wick-vs-cotton-wick Published: 2026-10-08 Publisher: Candle Making Nest Cotton wicks are the safer choice for most container candles because they come in dozens of documented sizes, light easily and burn predictably in soy, coconut, paraffin and beeswax. Wood wicks win when you want a wide, low flame and a soft crackle in a wide jar, but they need more test burns, more careful trimming and a wax they get along with. The two are not interchangeable: a wood wick does not have a cotton equivalent you can swap in, so the decision shapes your vessel choice, your fragrance load and how much testing you do. This comparison covers the real differences a maker runs into, from first light to the bottom of the jar. ## How the two wicks actually burn A cotton wick is a braided bundle of cotton threads, sometimes with a paper or cotton core, treated with a wax coating. It draws melted wax up by capillary action and burns in a tall teardrop flame. Series such as CD, ECO, HTP and LX differ in braid tightness and core, and each series runs a numbered range where a bigger number means a bigger flame and a wider melt pool. A wood wick is a thin strip of wood, usually about 0.5 inch wide and 5 to 6 inches long, held upright by a small metal clip at the base. The flame spreads along the top edge of the strip, so it is wide and low rather than tall. The crackle comes from moisture and resin in the wood popping as it burns. Because the flame sits across a wide edge, a single wood wick can clear a melt pool that would need two cotton wicks, which is why wood wicks suit vessels 3 to 4 inches across. The practical result: cotton gives a hotter, more concentrated flame that melts straight down, while wood gives a cooler, broader flame that melts outward. Cotton tends to tunnel when undersized; wood tends to drown or self-extinguish when the pool gets too deep or the wax is too dense for the strip to draw. ## Sizing: cotton has a map, wood needs a compass Cotton wick sizing is well documented. Suppliers publish charts that match each series number to a container diameter and wax type, so for a 3 inch soy jar you can start with the chart's suggestion and adjust one size up or down after a burn test. Sample packs that bundle three or four neighboring sizes make this fast. If you make several jar sizes, cotton lets you cover all of them from one or two series. Wood wicks are sold in far fewer sizes, typically widths from about 0.375 to 0.75 inch and two or three thicknesses, plus a two-ply booster version for waxes that are hard to draw. There is no equivalent of the numbered chart, so you pick a width close to your vessel diameter and test. The same wick can behave very differently in soy versus a coconut blend versus paraffin, so a change of wax usually means a new round of tests. Rule of thumb that holds for both: the melt pool should reach the glass within 2 to 4 hours and sit about 0.25 to 0.5 inch deep. A flame that flickers hard, a pool deeper than that, or soot on the glass means the wick is too big. A pool that never reaches the edge after 4 hours means it is too small. [Wick sample packs for testing](https://candlemakingnest.com/best/best-wick-sample-packs) ## Trimming, relighting and maintenance Cotton is trimmed to about 0.25 inch before each burn. The failure mode is mushrooming: a carbon ball on the tip when the wick is oversized or the fragrance load is high, which then throws soot. Trim the mushroom off and, if it keeps returning, move down one size. Wood is trimmed shorter, to about 0.125 to 0.1875 inch, and the burnt char must be snapped or pinched off rather than left on top. A wood wick with a layer of char on it is the number one reason customers say wood wicks will not stay lit: the flame has to burn through dead material before it reaches wax-fed wood. Nail clippers or a dedicated wick trimmer with a flat jaw handle wood better than scissors. Relighting also differs. A cotton wick with a visible tip relights in a second. A wood wick needs the flame held along the edge for several seconds until the wax underneath melts and the whole top edge catches; lighting only one corner gives a weak, lopsided flame. [Wick trimmers that handle both types](https://candlemakingnest.com/best/best-wick-trimmers) ## Wax, fragrance and vessel combinations Cotton works across every common wax. Soy, coconut blends, paraffin, parasoy and beeswax all have cotton series that are proven in them, and the charts usually list wax-specific recommendations. Fragrance load up to the wax maximum (commonly 6 to 10 percent) is fine as long as the wick is sized for the loaded wax, not the plain wax. Wood wicks are at their best in soy and coconut-soy container blends, which are soft and easy to draw. Dense or high-melt waxes can starve a single-ply strip, which is what the booster versions exist for. High fragrance loads and heavy additives such as vybar make the wax harder to draw as well, so wood wick makers often settle a little below the wax maximum and test from there. Beeswax and wood wicks are a difficult pairing because of the wax's density and are not a beginner project. On vessels: cotton suits narrow jars, tins, tapers, pillars and anything under about 3 inches across. Wood suits wide, shallow vessels such as low bowls, tumblers and 3 to 4 inch jars, where its horizontal flame clears the pool and the crackle is audible. In a tall narrow jar a wood wick runs out of oxygen as the candle burns down and starts to smoke. [Wooden wicks and clips](https://candlemakingnest.com/best/best-wooden-wicks) ## Cost, setup and selling considerations Cotton wicks cost a few cents each pre-tabbed, and a sticker or a dab of glue holds the tab to the base. Centering is simple with a bar or a clothespin. Wood wicks cost several times more per candle, need their own metal clip, and because the strip is flat you must also keep it from leaning, which the clip alone does not always do in a deep pour. For sellers the choice is partly a branding decision. A crackling candle in a wide vessel is a recognizable product, but the burn instructions customers need (trim short, remove char, let the pool reach the edge) are stricter than for cotton, and more customer complaints trace back to wood wicks that were lit once, not trimmed, and never relit properly. If you sell wood wick candles, print the trim and relight instructions on the care card. If you are starting out, use cotton for your first few recipes and get a clean burn test in a 3 inch jar. Move to wood once you are comfortable reading a melt pool and happy to spend a few extra test candles on each new wax or fragrance. [Cotton wicks by size](https://candlemakingnest.com/best/best-cotton-wicks) ## Frequently asked questions Do wood wicks burn faster than cotton wicks? Not by much. The wider, lower flame of a wood wick burns cooler, so consumption per hour is similar or slightly lower than a correctly sized cotton wick in the same jar. Burn time differences in the same vessel are usually down to wick size, not wick type. Why does my wood wick keep going out? The usual causes, in order: char left on the wick, a strip too thin for the wax (try a booster or a thicker wick), fragrance load too high, or a jar too narrow and deep for the flame to get air. Fix one at a time and re-test. Can I use two wood wicks in a wide vessel? Yes, makers do this in vessels 4 inches and wider, placing the strips parallel and about 1 to 1.5 inches apart. Two narrower wicks are easier to balance than one very wide one. Double cotton wicking is the alternative and is better documented. Does a cotton wick crackle? Occasionally, when there is moisture or a pocket of fragrance oil, but not reliably and not by design. A steady crackle only comes from a wood wick, and even then the sound depends on the wood species, thickness and how dry the wick is. ## Related buying guides - https://candlemakingnest.com/best/best-wooden-wicks - https://candlemakingnest.com/best/best-cotton-wicks - https://candlemakingnest.com/best/best-wick-sample-packs - https://candlemakingnest.com/best/best-wick-trimmers