The products

Metal stock

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Casting grain Which makes a flat-based rigid jar the format Solder, in three grades that look identical So label the grade, not just the metal And not by colour alone Wire stock Coiled wire wants a tall container or a flat one Scrap is the leaf nobody plans for Small containers, several of them Weigh the container once and write it on References

Every gram is money. Which changes what a container is for.

Casting grain

Small pellets of alloy for melting. Bought by weight, used by weight, and the container is a measuring context as much as a store.

Which makes a flat-based rigid jar the format

Something that sits on a scale without rocking and does not distort when you pour grain back into it. 224 jars here, 101 of them PET single wall.

Solder, in three grades that look identical

Hard, medium and easy, with different melting points and different fineness. Mixing them up changes the joint and, through the tolerance, the assay of the piece.

So label the grade, not just the metal

A jar marked "silver solder" is not a label, it is a category. The grade is the operative fact and it belongs on the container in words.

And not by colour alone

Around one in twelve men cannot separate a colour code reliably. For three grades that look the same in the metal, a coloured dot alone is not a system.

Wire stock

Sorted by alloy, gauge and hardness. Long, springy, and it tangles with itself, which is a storage geometry problem rather than a chemistry one.

Coiled wire wants a tall container or a flat one

And this shelf has neither in a useful way: 224 jars and one tube. Wire storage is the leaf served worst here.

Scrap is the leaf nobody plans for

Filings, snippets, failed joints and sweeps. All of it is recoverable value and it needs a sealed container per metal, kept separate, because mixed scrap refines at a discount.

Small containers, several of them

12 containers at 30 mL or under. For solder snippets and gold scrap that is the relevant count and it is thin.

Weigh the container once and write it on

Which is the refill property's tare idea applied to a bench: knowing the empty weight turns every subsequent weighing into arithmetic rather than a decanting step.

References

15 U.S.C. 295. For a gold article, the actual fineness "shall not be less by more than three one-thousandth parts" than the marked fineness. For the entire article including solder, the divergence shall "not be less by more than three one-thousandth parts" for watchcases and flatware and "not be less by more than seven one-thousandth parts" for other articles. Silver tolerances are at 15 U.S.C. 296 and were not read for this property. law.cornell.edu

The Davis Pack Supply catalog, measured 19 October 2026. The jewelry metalwork shelf is 617 rows: 286 containers and 331 closures. 15 mL to 9,464 mL with a median of 237; 12 containers at 30 mL or under, 104 at 120 or under, 214 at a pint or under. 117 PET, 80 PP, 50 glass, 38 HDPE. 224 jars, 41 bottles, 19 tubs and pails, 1 jug, 1 tube. 89 clear, 74 white, 39 natural, 30 amber, 26 black. Closures: 248 continuous thread, 22 dome lids, 18 lug and twist, 12 child resistant, 10 round tubs, 9 liners and sealing discs, 5 phenolic, 5 specialty.

Written from 15 U.S.C. 295 and 297, and from the catalog as it stood on 19 October 2026. Silver tolerances at 15 U.S.C. 296 were not read for this property and are not summarized. The FTC Jewelry Guides at 16 CFR part 23 govern how jewelry is described and are a separate body of rules. Pickle and patina chemistry is a safety data sheet question and no handling advice is given here.