I Have a 10,000-Piece Festive Candle Order — How Much Additional Raw Material Should I Purchase Above the Theoretical Requirement to Protect Against Production Loss?

Theoretical requirement first

The theoretical requirement is the material inside 10,000 finished candles and nothing else. CSI's convention across the calculator series is that fragrance load is a share of the finished weight. So a 150 g candle at 8% holds 150 × 0.08 = 12 g of oil and 150 − 12 = 138 g of wax. Multiply by 10,000 and the order contains 1,380 kg of wax and 120 kg of oil, 1,500 kg in all. One wick and one jar per candle gives 10,000 of each.

The oil error in that table is the quieter one. If you calculate oil as 8% of the wax (138 × 0.08 = 11.04 g) you land 0.96 g short per candle, and across 10,000 candles that is 9.6 kg of fragrance you do not have. The true load of such a candle is 11.04 ÷ 149.04 = 7.41%, not 8%. Treating finished weight as pure wax weight and calculating wax when the listed weight includes fragrance cover both mistakes in detail. From here on, every allowance is applied to the correct theoretical figure.

The stack, in the right order

Allowances are not interchangeable, and the order you apply them in changes the answer. The sequence that holds up on a large order is: fixed extra units, then the reject rate, then material loss, then pack rounding. Fixed units come first because they are a count, not a percentage. The reject rate comes next because it applies to every candle you pour, including the tests. Material loss comes after, because it applies to all the material that goes through the melter, rejected candles included. Rounding comes last because it is the only step that looks at the catalogue.

The spread between tight and cautious is 93.8 kg of wax, 8.2 kg of oil and ₹84,726.73. That is the price of not knowing your own reject and loss rates. A maker who has run two or three large orders and recorded the numbers can plan near the tight row with confidence. A maker taking their first 10,000-piece order should plan near the base or cautious row, and record everything so the next order can be tighter.

Allowances by component

Each component on the order fails in its own way, so each gets its own allowance. The table sets out which allowance touches which line. A tick means the allowance adds to that component; a dash means it does not.

Two simplifications are worth naming. First, we treat a rejected candle as fully scrapped. In practice wax from a rejected candle can often be reclaimed and remelted, and a jar can sometimes be cleaned and reused, so the true consumption is a little lower. Planning as if nothing is recovered keeps the booking on the safe side; anything you reclaim becomes stock for the next job. Second, we have not added a separate safety stock on top. On a one-off order with a fixed quantity, the reject and loss allowances are the safety stock. For ongoing monthly production, where demand itself varies, a separate safety stock makes sense, and I Want to Maintain Two Weeks of Safety Stock for My Candle Business — How Do I Calculate the Minimum Quantity of Wax, Fragrance, Wicks and Jars I Should Never Fall Below? sets that up.

Wick size is not assigned here. CSI's data does not publish a wick size per jar diameter, so the Eco Thin C1 is priced as an example and your burn test decides. The 2% wick allowance covers setting mistakes in production; wicks for testing several sizes before the run are a separate, smaller purchase, and I'm Testing Three Wick Sizes Across Five Fragrances — How Many Wicks of Each Size Should I Buy Before Committing to a Bulk Pack? works out how many of each to buy. I Need 1,000 Candles and Each Uses One Wick — Should I Order Exactly 1,000 Wicks or Keep Additional Pieces for Testing, Defects and Production Mistakes? covers the wider question of how many spare wicks a 1,000-candle run should hold.

What the allowance costs — and what skipping it costs

Price the allowance at listed per-unit rates: wax at ₹507.40 a kilo, Cinnamon Vanilla at ₹4,554.80 a kilo, wicks at ₹5.90 and 200 ml Salsa jars at ₹29.50 each. Theoretical material for 10,000 candles comes to ₹16,00,788.00. With the full stack it comes to ₹16,82,575.34. The allowance is ₹81,787.34, or ₹8.18 per ordered candle.

Now price the alternative. Suppose you skipped only the reject allowance and poured exactly 10,040. At a 2% reject rate, about 205 of them fail, and you finish 205 candles short. At an example selling price of ₹399 a candle (replace it with your own), that is ₹81,795.00 of order value you cannot deliver, plus a rush reorder in the busiest weeks of the year. The whole allowance costs ₹81,787.34. On a festive deadline, it is cheap insurance.

The priced order

Rounded to packs that CSI actually lists, with oil in 1 kg bottles and one 500 g top-up where the remainder allows. A 10,000-piece order is far beyond the listed packs, so treat this as the benchmark you take into a WhatsApp quote, not as the final price.

Per ordered candle, that is ₹168.62 of material including every allowance, against ₹160.08 for one perfect candle. The difference, ₹8.55, is what the allowances and pack rounding add per unit you invoice. It excludes labels, boxes, outer cartons, freight, labour and GST, which you price yourself. The 150 g fill in a 200 ml jar is an example: 200 ml is the jar's brim volume, not a wax weight, and the Salsa jar's fill weight is not published. Weigh a test pour to your fill line before you book; I Ordered 100 × 200 ml Candle Jars — How Do I Calculate How Much Wax They Actually Need When 200 ml Does Not Mean 200 g of Candle Wax? explains why 200 ml does not mean 200 g.

After the run, record four numbers: candles poured, candles rejected, wax left in the melter at the end, and jars broken. They turn next season's assumptions into measurements. If this order is one of several landing in the same month, I Have Three Bulk Orders Happening in the Same Month — How Do I Combine Their Wax Requirements While Keeping Fragrance Oils and Packaging Quantities Separate? shows how to pool the wax lines across orders while keeping each client's oil and jars separate, and I'm Accepting Larger Corporate Orders — How Do I Calculate Raw-Material Requirements Before Quoting so Unexpected Wastage Doesn't Destroy My Margin? builds the measured rates into a quote before you accept the next large order.

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