Should I Secure All Critical Custom Materials Before Promising a Final Wedding Delivery Date?

Your order as numbers

The title gives no figures, so this is a worked example to replace with your own. A wedding client wants 800 candles of 200 g at 8% (16 g oil + 184 g wax, total-weight basis), scented with Raat Ki Rani, coloured a soft red with Red Candle Dye Liquid at your recipe’s 0.5 g per kg of wax, in a 200 g jar from your glass supplier (₹55.00 each, 10-day lead), packed in boxes printed with the couple’s names (₹38.00 each, 17 days after artwork sign-off). Wax, oil, dye, wicks and stickers come from CSI on a 6-day planning figure, which is yours, not ours: CSI publishes no dispatch or transit times. You produce about 150 candles a day from a 10 kg melter (three melts of 50, worked). Price ₹480.00 a candle (₹3,84,000.00).

The critical-materials register

A material is critical if production cannot continue without it. That includes the obvious (jars, oil) and the easily forgotten (a ₹900.00 dye bottle, the right wick, the box the candle ships in). The register lists each one, who supplies it, its lead time from your supplier, which step it gates, and what "secured" means for it.

Two columns do most of the work. "Gates which step" stops you treating every late item as equally fatal: boxes late by three days cost nothing if they still arrive before packing. "Secured when" stops you counting an item that is merely ordered. A supplier’s "in stock" on a website, ours included, is not secured: CSI shows whether a pack is in stock, not how many, and does not promise dispatch days.

Questions that turn a lead time into a commitment

A lead time is only useful if you know what it starts from and what it ends with. Ask every supplier the same four questions and write the answers into the register: from when (order, payment, or artwork sign-off?), to when (dispatch, or arrival at your door?), how many from one batch (so a second lot does not surprise you), and what happens in a slip (do they tell you, and how early?). For printed packaging add a fifth: how many proof rounds are included, because each extra round is days the client spends, not the printer. For CSI lines, the honest answer to "to when" is that we confirm a dispatch date on WhatsApp for your specific order; transit after that depends on the courier and your city, so your planning figure should include it.

Which items need a deeper buffer because they can never be replaced in time is a separate question: custom jars are 6352, custom oils, colours and labels 6353. If a supplier can only provide part of a critical item, 6354 handles the shortfall.

The date rule, simple and refined

The simple rule

Date = last critical arrival + inspection + production + cure + QC + packing + delivery + slack. It assumes nothing starts until everything is in, which is pessimistic but almost impossible to get wrong. In the worked order: boxes on day 33 + 1 + 6 + 7 + 2 + 2 + 2 = day 53, plus 3 days of slack = day 56. The tail after the last arrival is 23 days, and it is the same whichever item is last.

The refined rule

Each material only has to arrive before the step that consumes it. Jars, wax, oil, dye and wicks gate pouring; boxes and stickers gate packing. So pouring starts when the last pouring material is inspected (jars, day 26 + 1), and packing only needs the boxes once QC is done on day 42, which their day-33 arrival comfortably beats.

The refined plan recovers 7 days, but only if you track each item against its own need-by day. If the printer slips by more than the cushion between day 33 and packing on day 42, the boxes become the critical path again. That is why the register has an "if it slips" column, and why the slack stays in.

When something does slip, recalculate the same day and tell the client the same day. A printer who moves from day 33 to day 40 still leaves packing on time in the refined plan (QC finishes on day 42); a jar delivery that moves from day 26 to day 30 pushes every later step by four days, and the slack is gone. The register tells you which of those you are facing in a minute, and the client hears it from you rather than discovering it.

When the client’s date is earlier than yours

Suppose the client needs delivery on day 45 and your refined plan says 49. The temptation is to squeeze the steps that look soft: shorter cure, quicker QC, no slack. Those are the steps that protect the candle. The honest move is to change the materials that set the critical path.

In the worked numbers, day 45 is reachable only on the third row: a jar that ships with the wax (one you already hold, or a standard jar available in the quantity with the same dispatch), and standard packaging with a printed sticker instead of a printed box. Both are client-visible changes, so they are the client’s choice, offered with the dates side by side. If they want the printed box and their jar, the date is 49. Whether cure can be shortened at all for a corporate rush is argued in the shorter-cure post; the answer for a wedding you have one chance at is usually no.

The purchase sheet, and when each line is bought

All bulk lines are ordered on day 16, the day the client signs the physical sample; the sample stage before it used 240 g of oil (a 6/8/10% ladder plus a two-wick bracket), 2.76 kg of wax and the 10-packs of wicks. Materials come to ₹325.53 per saleable candle, excluding labour, freight and GST. Raat Ki Rani is the largest CSI line, and its 1 kg costs exactly two 500 g, so there is no bulk discount hiding in the pack choice. The full method for building these lines from a client’s PO is the bulk purchase sheet post; the development tracks that run before sign-off are 6358.

Ordering everything on one day is also a cash event: ₹2,60,425.80 leaves your account before a single candle is poured. That is why the advance is collected at sign-off, and why the date in the quote should be tied to both.

What you never skip, and how to word the date

The CSI materials on the register

The standard materials CSI supplies for the worked order; jars and printed boxes come from your own suppliers. Nothing is ranked on performance (CSI publishes no burn data).

Frequently asked questions