If One Wick Size Is Too Large and the Next Is Too Small, Should I Try Another Wick Series Rather Than Changing the Whole Candle Formula?

Your question, made precise

Here is the situation in this page's terms. With the larger wick (we'll use C2, the common case at CSI) the candle shows the signs of too much wick: soot or a smoke trail during the burn, a flame that grows and flickers, a pool deeper than about 1–1.5 cm by hour four (a rule of thumb), or glass that your own non-contact thermometer reads hotter than your written limit. With the next size down (C1) it shows too little: a pool that still hasn't reached the glass after the second full session, a collar of wax on the wall, a flame that shrinks or drowns. Both results come from candles trimmed to 5–6 mm and burned in still air, in 4-hour sessions. Unless your title gives one, the candle is the series default, labelled: 200 g at 8%, 16 g fragrance + 184 g wax, in your own jar.

The question is not "which of C1 or C2", because both have failed. It is which part of the candle to change next: the wick's construction, or the formula around it. This page owns that decision and its cost. The hub (6981) ranks all six ways across the gap and runs a 12-candle load-and-pair matrix; the sampling post (6984) buys every construction at once; 6983 covers a candle whose pool is perfect and only the soot is wrong.

What "another series" honestly means at CSI

Wick makers elsewhere sell several numbered ranges in many sizes. CSI does not, and we won't pretend otherwise. Everything we sell is below, with what each page says in the text we captured and which gap it could honestly fill. "Unknown" means the page states no size you could place on the C1 → C2 → Cotton Braided ladder: you find out where it sits only by burning it.

So for the common gap (C2 too large, C1 too small) path A has two arms: wood and the braided roll. For the gap one rung up (C2 too small, Cotton Braided too large) it has three: wood, the braided roll and Eco Braided cut to length. Nothing on this list is a "C1½". If you need a sized step that we don't sell, we would rather tell you than sell you three packs that can't work: ask on WhatsApp.

One more honest point. Two wicks with similar names, lengths and thicknesses can burn differently (why a replacement that looks the same burns differently), so treat each construction as a new wick with no history, even though all of them are cotton or wood.

Before either path: causes, ranked

Before you change construction or formula, make sure both verdicts belong to the candle and not to how it was burned. The ranking is our judgement for "C2 too large, C1 too small"; signs are common observations, not CSI burn data.

Rows 5 and 6 sit below row 4 here for one reason: this page's question assumes you want to keep the formula. If you are happy to move one point of load, the hub's matrix tests that alongside a C1 pair and is cheaper still. Fragrance and dye effects are tendencies; no CSI oil or dye page gives soot or wick data in the text we captured.

Two paths, priced: test spend, days and the cost that stays

The worked example: a 200 g candle in your jar, Dark Vanilla at 8%, C2 too large, C1 too small. Path A keeps the formula and burns three candles each of C2 (control), the wooden wick and the braided roll. Path B rebuilds the formula the way many makers do when a wick won't fit: it moves to a different wax (Premium Coconut Soy Wax CSI 468, whose page claims "low soot output" and states "Fragrance Load Up to 13%") and runs a 6/8/10% ladder on C1 and C2, because a new wax means new wick results. Oil grams follow the load: 12 g at 6%, 16 g at 8%, 20 g at 10%.

Path B costs ₹1,251.38 more in this example before you count its hidden work: a throw panel, a colour check on a new wax, a new pour temperature (CSI 468's page states "Pour Temperature 58°C – 60°C", against CSI 464's 80–90°C), and every label and cost line that names the old formula. That is why construction comes first.

The cost that follows you into production

Test spend is paid once. The per-candle difference is paid on every candle you make. Here the paths can swap places, and this is where we argue against our own interest.

Argued against our own interest: the wooden wick is the dearest wick we sell, and if it passes it will cost you ₹8,755.60 more a month than C2 at 250 candles. If your customers don't want the look or the crackle, don't choose wood just to avoid a formula change; a one-point load step that passes is cheaper for ever. Equally, the braided roll's low per-tab price (₹7.07) is only cheap if your hands are cheap: cutting, tabbing and priming 250 wicks a month is labour that a pre-tabbed C2 doesn't need.

The construction test: arms, candles, approval

Everything except the wick is identical: wax lot, oil lot, load, fill, pour temperature, cure and room. The control is your current C2, because a better arm only means something beside the arm it replaces. How many candidates to run side by side explains why three or four arms is usually the limit; here the CSI list sets it at three.

If no construction fits: the smallest formula change first

If wood and the braided roll both fail, the wick side of CSI's list is exhausted for that gap, and something in the formula has to move. Move it in this order, one step per round, with the C2 you already know as the wick:

Steps 1 and 2 are where the hub's matrix lives. If step 2 costs you some throw, the clean-burn, less-throw post explains how to judge whether that loss matters and how to win some back without a stronger wick. Step 4 is rarely the answer to a wick gap on its own; if you do change wax, every wick result you have is void and the test starts from the C1 → C2 → Cotton Braided ladder again.

The CSI buy list and the step to production

Argued against our own interest: if path A fails, our honest advice costs us a sale: your next test needs no new wick from us at all, just your C2 and one point less oil.

The step to production quantity

Once one arm passes on three full-life candles, production wicks = candles × wicks per candle × (1 + a defect allowance). Worked example, labelled: 250 candles a month at 2% is 255 wicks. Wood: 2 × 100 + 50 + 10 = 260 for ₹11,210.00, slightly less than three 100-packs (₹12,390.00) and only wooden wicks get cheaper per wick in bigger packs (the 50-pack's "Save 25%" label works out at 20%, the 100-pack's at 30%). Braided roll: three rolls give 300 tabs for ₹2,120.46. The same 260 in C2 would be ₹2,454.40. Safety stock and lead time belong to the purchase-quantity formula; CSI publishes no lead times, so ask on WhatsApp. Before you order more than a month, see how many repeats to run.

What to buy, and what to skip

Five items, chosen on page statements, price and stock on 7 October 2026. CSI publishes no burn, soot or flame data, so nothing is ranked on performance, and each card says when not to buy.

Skip for now: Cotton Braided if C2 is already too large (it is bigger, not different); the Eco Candle Wicks Loose unless your jar is near 2 inches (about 5 cm); a new wax "while you're at it"; and any 100-pack of wood before approval.

Elsewhere: when one size seems slightly small and the next clearly large in a wide jar, the wide-jar between-sizes post; moving a working two-cotton-wick jar to wood, whether the whole burn test restarts; and a tall flame over a short pool that might be the wrong wick type rather than size, the wick-type question.

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