Burn it to the edge the first time

Because of what happened the first time you lit it. Some people say the first burn decides it, and one person explains the mechanic: wax that has melted and set again is softer than wax that never melted, so it melts first the next time. If the first burn only melted a pool in the middle, that pool is the soft spot, and every later burn drops into it while the ring around it stays hard — people call it the wax’s memory, and one person warns the ring, once set, follows the candle for its whole life. If the first burn goes all the way to the glass, the whole top is soft, the next burn reaches the edge in a fraction of the time — one person says more than twice as fast — and the candle uses all of itself. Some people say they had assumed the makers were making the candles too big, rather than that they were burning them wrong. Not every hole is your doing, though: one person says a wick too thin for the jar, or too few wicks in a wide one, tunnels in a way burn time alone cannot always fix, and one person says both are true — a good candle can still tunnel on a short first burn, and wick size plays a large part.

An hour for every inch of the jar’s width, some people say, and one person points out it scales — two inches, two hours; three inches, three. The candle trade’s own guidance is the same rule. Some people found the phrasing confusing, so here it is plainly: light it, and do not blow it out until the melted wax touches the glass all the way round; if that takes longer than the arithmetic, the arithmetic loses. There is a ceiling too. One person says burning on past the full pool makes runners — wax climbing and spilling over — and the trade says no more than about four hours at a time, with two hours to cool before you relight; one person warns wait for the wax to set fully before the next burn. Three exceptions from people. A bare pillar candle with no jar cannot be burned to its edge without spilling, some people say, so the rule is for jars and tins. One person says coconut wax and its blends do not need the strict full pool. And one person says a draught from a fan or a vent pushes the heat to one side and starts a tunnel early, which is why the trade says to keep the flame out of moving air. Whether a candle with two or three wicks needs the same hours is not covered here, and how the rule changes for soy against paraffin against beeswax is a gap here.

Some people say trim it, and others say trim it before the first burn especially: a long wick makes a tall, hot, sooty flame that drives heat up rather than out, and a short one makes a wider, calmer pool. Some people use nail clippers. The trade puts a number on it — a quarter of an inch, before every burn, with any burnt debris lifted out of the pool — and one person warns a flame producing black smoke during the first burn is too big and should be trimmed down. A wick that is the wrong size for the jar is the maker’s problem, as the first answer says, and how to judge that before buying is not covered here.

Some people use the same trick: dip the lit wick into the melted pool so the wax puts the flame out, then lift the wick upright again. No smoke, no smell of snuffed wick, and the wick is primed in wax for the next light. Some people shake the jar so the wax covers the flame instead; this page does not carry that, because hot wax moves faster than a hand, and the fire-safety bodies’ default — a snuffer, or a gentle blow — is the one to use if the dipping feels fiddly. Never water. Whether the smoke is even a problem is argued across some discussions and set out below: some people like the smell of a blown-out candle and some cannot stand it.

Sometimes, and the fix has a hazard attached. Some people wrap the top of the jar in aluminium foil so heat reflects back onto the ring of hard wax and melts it level; one person points out the wrap should run down the sides of the jar rather than sit on top like a lid, one person doing it on a first light puts the shiny side inward, and one person hangs a foil collar over the rim, kept clear of the flame. The warning in the safety line is the price of it: take the foil off as soon as the surface has levelled, because a covered candle traps heat, the wax vaporises, the flame climbs, and water on it makes a fireball. Two gentler fixes from individual people: scrape the soft wax from the ring in toward the centre with a butter knife while the pool is warm, so the surface levels itself over a few burns; or, from other individual people, stand the jar on an electric candle warmer, which avoids a flame and throws the scent better, or on the hotplate of a coffee maker until the uneven wax is level again. What to do with a deep ring that foil does not reach is not covered here.

One person melts leftover wax in a jar standing in a pan of warm water — never directly on the heat — pours it into a new container with a fresh wick, and mixes scents while doing it; how to rig that without a suitable pan is a gap here. One person keeps candles in the freezer and says they burn longer and drip less. One person lifts wax off a wall by laying kitchen paper over it and pressing a warm iron on the paper. And one person describes the weighted brass devices, called followers, set on church candles to press the edges so the wax does not run and none is wasted.

It can, briefly, and the people who tested it say otherwise. Some people pass on the tip that a crayon burns for about half an hour, its paper wrapper acting as the wick. People then tried it: some people say the burn lasts minutes — five to seven in one test, just over twenty at the longest, none reaching half an hour — and some people say theirs charred black and would not stay lit or got too hot to hold. Warnings go with it: the wax runs very hot, a pie tin under it can soften, the fumes need an open window and should not be breathed, one person warns old crayons may carry traces of asbestos in the dust, and one person says the flame flares when melted wax reaches the paper. People argue viability: cheap and it works for a single use, against impractical and hazardous when a torch does the job. People also argue at length about making a candle from vegetable shortening or an oil lamp from a can; one person says the materials cost about what a real candle does and it is not worth the risk, and this page agrees and gives no instructions. Two safety lines fall out of that argument and belong here anyway: never put water on a fat or oil fire, and never flour — one person warns flour is explosive — and the extinguisher page linked below carries what the British and American fire services say about a burning pan.