I Have Enough Production Capacity for 1,000 Candles but Not Enough Time for Proper Burn Testing — Should I Still Accept the Order?

Your order: capacity yes, proof no

Reader's figures (title): 1,000 candles, enough capacity, not enough time to test. Labelled worked example: you pour 150 a day (two people and a 10 kg melter-class unit), the client needs hand-over on day 18 (day 1 a Monday), and your proven candle is Luxury Soy Wax CSI 464 with an Eco C2 wick in the clear 200ml Salsa jar at a 160 g fill and 8% (12.8 g oil + 147.2 g wax). The client wants a scent you have never burned: Apple Cinnamon. So only the oil is new. That is the most common version of this question, and the least risky; a new jar or wick changes the answer below.

The capacity is real: 1,050 candles at 150 a day is 7 pouring days. The problem is the days before pouring. Every proper route starts with cure (the Apple Cinnamon page states "cure 48-72 hours" as the minimum before burn testing) and ends with a burn to the bottom of the jar, and neither gets faster with more staff. How long a new fragrance's development really takes is the development-calendar post. Whether your capacity really is enough is the 1,000-in-21-days hub.

What a failed 1,000-candle order costs

Here is the worked-example order, priced. The CSI lines come from a bulk purchase sheet in the 6301 format (1,000 saleable, 10 planned extras, a 4% loss buffer, a 1% heel allowance, 2% breakage on pieces). The selling price, labour and other costs are labelled worked examples: use your own.

The asymmetry is the whole argument. Success earns ₹2,16,652.04. Failure after delivery does not just lose that: you have spent ₹2,63,347.96 you will not recover, and a corporate client whose 1,000 recipients each found a sooting or tunnelling candle is unlikely to order again, which the worked example values at one lost repeat order of the same margin. Reputation beyond that client is real but not something to put a number on. A per-candle view of the same thing, including test candles and failed batches, is the true manufacturing cost post.

The break-even chance of failure

Expected profit is (chance of success × margin) minus (chance of failure × loss). Set it to zero and you get the break-even chance of failure: the highest risk at which the bet still pays on average. It is a way of seeing the shape of the risk, not a forecast.

Two readings. First, shipping untested only pays if the failure chance is under 31%, and the honest answer for an oil you have never burned in this jar is that you do not know it; your feeling that "it'll be fine" is not data. Second, the gated plan changes the arithmetic because it caps the loss: if the verdict on day 9 is a fail, you stop with 450 candles poured (whose wax, oil and jars are partly recoverable by remelting) and tell the client the same week. That is why it breaks even at 69%. The real protection in the gated plan is not the maths. It is that nothing reaches a customer before it has burned to the bottom.

What a minimum viable test can and cannot prove

The minimum viable test in the gated plan is six candles poured on day 2 from 100 g of the new oil at 8% (inside both ceilings: the oil page states 6–10% and CSI 464 up to 10%), on your proven wick, in your proven jar. Three get two 4-hour burns at cure day 3 (day 5). Three are burned to about 1 cm of wax left in attended sessions, finishing on day 9. Here is what that does and does not tell you.

The last column is the honest cost of the gated plan: you are shipping a candle whose load was not optimised and whose long-term colour is unknown. Tell the client both, and get their written agreement that the scent was approved on a short cure (practical judgement, not legal advice). Whether a shortened cure is acceptable at all is discussed in the shortening-cure post; the steps that are never skipped, even for an urgent order, are the never-skip post.

Five answers to the client, priced

In order of preference. Each uses the worked-example figures above.

The decision rule: accept on time only if the shipped candle will have passed a full-life burn in its exact configuration before hand-over. With a proven formula that is already true. With an oil-only change it is true only on the gated plan, and only if the verdict day (day 9) falls before hand-over (day 18). With a new jar or wick it is not true in 18 days, so the answer is options 1, 2, 4 or 5. The scored version of this decision, across quantity, deadline, formula, capacity and materials, is the go / no-go matrix.

The proven-formula materials

Four items: the three parts of the worked example's proven candle, and the one new oil. Chosen on page statements, price and stock on 7 October 2026; CSI publishes no burn or throw data, so nothing is ranked on performance.

One tool belongs with every gated plan: a Pen Thermometer (₹354.00) at every melt, because a production run you are already nervous about is not the time to guess temperatures.

Frequently asked questions