Why can Fuze Pack Assembly quotes differ by 30 % on one drawing?

Answer: Structure, not material. One folds tooling in, another bills it; one lists three items, another nine.

Can we run fewer than 200 Fuze Pack Assembly sets?

Answer: Yes, at a price jump. Cold-shot scrap spreads over fewer sets, so add 15 to 25.

We paid for the tool. Do we own it?

Answer: Only if the contract says so; payment and ownership are separate.

What breaks if 25 days becomes 15?

Answer: The cold shots and the 24-hour cure. Yield falls and the liner moves when packed.

Is one sample enough for a Fuze Pack Assembly?

Answer: No. One sample hides the liner-to-shell variation.

How much should 60-day terms add?

Answer: Around 1.5 %. Above two points you buy credit at a premium.

Fuze Pack Assembly Cost: Where the Rework Money Hides

Quick answer: Send one drawing to three suppliers and quotes spread by 30 %. The gap is rarely the shell; it sits in how the quote splits, how tooling is amortised and how lead time is built. Price a Fuze Pack Assembly per unit plus rework.

Five Lines, Not One Price
MOQ and Who Owns the Tool
Where the Twenty-Five Days Come From
Five Samples, Three Stations
Payment Terms and the Rework Bill
FAQ

1. Five Lines, Not One Price

A Fuze Pack Assembly quote carries five lines: shell, liner and locating parts, assembly labour, testing and packing, tooling. Four move with volume, the fifth does not.

Line	Usual basis	What to check
Shell	Per set, colour master and trimming included	Wall tolerance stated, ribs priced separately
Liner	By weight or by pocket	Density quoted as nominal or as a measured band
Assembly labour	Minutes times a rate	Whether it absorbs rework
Testing and packing	Per batch or per set	Test items listed, third-party report or in-house
Tooling amortisation	One-off or folded into the unit price	How many sets, and whether the price drops after

Two traps hide in the middle. A liner priced by weight moves several yuan a set when density swings 0.02 g/cm³, and the drawing says only as drawn. Testing folded in without a list returns as extras.

Re-sort a Fuze Pack Assembly quote first; the lowest total is usually the thinnest amortisation.

2. MOQ and Who Owns the Tool

Two hundred sets matches one clamp-up and one heat cycle. A tool needs two or three shots before a good part drops, scrap landing in batch one. Below that the supplier lifts the price or thins the wall.

Fuze Pack Assembly: a closed black case in a grey tray on a wooden bench, lathes and shelves behind, plywood against the wall

Tooling at 42,000 is paid outright, folded into the price, or billed against volume. Outright is cheapest per unit but needs an ownership clause. A folded deal needs two lines often missing: how many sets carry the amortisation, and whether the price steps down.

Paying for a tool is not owning it. Write the transfer trigger, the stamp number, who repairs.

3. Where the Twenty-Five Days Come From

Twenty-five working days is four stages plus two days of buffer, not a promise.

Material, 4 days: shell and liner resin land together, colour sampled
Rotomoulding, 9 days: two cold shots, first-article sign-off, oven at 260 °C
Foaming, 6 days: liner cures 24 hours, cut samples kept
Assembly, 4 days: latches, hinges and labels in series

Only two places compress: the cold shots and the cure. Squeeze the first and yield drops; squeeze the second and the liner springs back.

4. Five Samples, Three Stations

Five samples, not one. Sample one carries cold-shot marks, sample five the steady state. One sample is the one they picked.

Fuze Pack Assembly: a black case in a grey security tray on a conveyor, two metal latches facing out, screening lanes behind

Two days covers three stations. The arm: temperature logs and the mould stamp, which must match the quote. The foaming bay: rack levels and cut samples, since an under-cured liner shows coarse cells. The bench: a preset torque driver.

5. Payment Terms and the Rework Bill

Sixty days on a Fuze Pack Assembly adds about 1.5 %, the cost of capital. Keep it separate.

Rework item	Cost per set	Usual trigger
Liner replacement	42	Pocket out of tolerance, weak rebound
Latch replacement	18	Cracked body, torque overrun
Label reprint	6	Batch number does not match the case
Scrapped case	260	Lid seam leak, split corner

The cheap quote saves three ways: thinner liner, another latch brand, carton instead of crate. A little from each and the unit price drops 3 %, about 5 a set. The rework rate climbs from 1 % to 4 %; three points at 42 is 1.26, so it still looks 3.74 ahead.

The real gap opens on the first return. Two hundred sets go back, the loading plan slips five days, storage runs 800 a day. Three returns a year and the saving is gone. That is the figure to sit beside the price. Add one return's downtime and the cheapest quote usually stops being cheapest. Ask for the rework rate in writing.

Conclusion

Buying a Fuze Pack Assembly is not a price comparison. It is five lines pulled apart, an ownership clause, a lead time by stage, a rework cost per unit. Do those four and the lowest quote stops being cheapest. What decides unit cost is how many days one return takes to recover, and a Fuze Pack Assembly contract should pin that down.

This article discusses only the container (case body) side of specifications and design intent, and does not cover any handling, loading or use of the contents.