What goes wrong

It cured cloudy, or it never cured

Updated October 2026

On this page11

The inclusion was not dry The mold had dust on it The mold had taken a set The pigment attacked the bottle The colorant evaporated The mica caked The glitter went everywhere The findings got mixed Which is the batch record argument again Test the storage, not the resin References

Every one of these is a storage failure rather than a resin failure.

The inclusion was not dry

A dried flower or a botanical holding moisture clouds the resin around it and sometimes blooms. A lined closure and a desiccant is the whole fix.

The mold had dust on it

Invisible until the casting comes out. Silicone attracts dust and an open shelf is an invitation; a closed container is the only reliable answer.

The mold had taken a set

Stored creased or under weight. The casting comes out with a shape nobody designed and the mold does not recover.

The pigment attacked the bottle

An alcohol ink in PET. The wall clouds or softens, the ink picks up whatever leached, and the color shifts. 130 glass containers here exist for this.

The colorant evaporated

A solvent-borne dye through a poor liner. The remaining ink is stronger than it was, which ruins color repeatability before it ruins the ink.

The mica caked

Moisture into a powder with a loose cap. It can be broken up and it will never disperse the same way, which shows as streaks in a casting.

The glitter went everywhere

Static and a narrow mouth. A spill of fine flake contaminates every other color on the bench, which is why glitter wants individual sealed containers more than any other material here.

The findings got mixed

Certified and uncertified parts in one tray. For a maker running a children's line that is a compliance failure with no way to unpick it after the fact.

Which is the batch record argument again

Cohort information is only as good as knowing what went into the pour. Separate, labeled storage is what makes the mark on the package mean something.

Test the storage, not the resin

Put a mold, a dried flower and a filled pigment bottle away for three months, then use them. Every failure on this page shows up in that test and none of them show up on the day you fill.

References

The Davis Pack Supply catalog, measured 18 October 2026. The resin jewelry shelf is 1,217 rows: 698 containers and 519 closures. 5 mL to 9,464 mL with a median of 118; 100 containers at 30 mL or under, 390 at 120 or under, 662 at a pint or under. 390 PET, 130 glass, 99 HDPE, 78 PP. 459 bottles, 224 jars, 12 tubs and pails, 2 tubes, 1 jug. 186 clear, 151 white, 119 amber. Closures: 363 continuous thread, 43 dropper assemblies, 27 dome lids, 19 lug and twist, 16 flip top, 14 phenolic, 11 liners and sealing discs, 8 specialty, 6 dropper tips and caps, 6 round tubs.

The archetype behind this shelf is ind-chemical: 100 to 20,000 mL, narrow mouth, HDPE and glass, light sensitive, child resistant, poured, with "chemical resistance is the entire decision, check the resin chart first" as its stated reason. All four leaves sit on it, including the two that store dry items picked out with tweezers.

15 U.S.C. 2063(a)(5)(A): "the manufacturer of a children's product shall place permanent, distinguishing marks on the product and its packaging, to the extent practicable, that will enable" the manufacturer to ascertain "the location and date of production of the product, cohort information (including the batch, run number, or other identifying characteristic)" and the ultimate purchaser to ascertain "the manufacturer or private labeler, location and date of production of the product, and cohort information". Subparagraph (B) lets the Commission exclude a product or class by regulation where it determines marking is not practicable. law.cornell.edu

Written from 15 U.S.C. 2052(a)(2), 15 U.S.C. 2063(a)(5) and 15 U.S.C. 1278a, and from the catalog as it stood on 18 October 2026. Whether a particular piece is a children's product, and whether a particular encapsulation is an inaccessible component part, are determinations this property raises and does not make. State jewelry laws and voluntary standards for children's jewelry sit on top of everything here.