Log every pour. Replicate your best work.

Almost always an imprecise resin-to-hardener ratio, or a mix that wasn't stirred long enough — under-mixing leaves unmixed resin clinging to the sides and bottom of the cup that never cures. Log your resin amount, hardener amount and mix time on every pour, and you'll be able to see exactly which ratio and mix time actually cured cleanly for each brand you use.

Usually trapped moisture from a humid workspace (it shows up as a hazy "blush" on the surface), or air whipped in from mixing too fast. Log your workspace temperature and humidity on every pour so a pattern — like every hazy piece sharing a humid day — becomes obvious instead of a mystery.

Mix slowly rather than vigorously, pour from a low height so trapped air can escape, and let mixed resin rest a couple of minutes before you use it. Note which technique you used and how well it worked, so you keep the one that actually works for your resin and stop guessing next time.

Without a written record, "a bit of teal and a splash of white" isn't reproducible. Log every layer's exact colour, pigment amount and pour order, and rate how confident you are that you could replicate it — so your best pieces stop being one-offs.

Demould time and full-cure time are different things, and both vary by brand, thickness and room temperature — demould too early and a piece warps or picks up fingerprints. Track both times per record against the resin brand you used, and you'll stop relying on guesswork or a sticky note by the mould.

UV exposure is the usual cause — even indoor light adds up over months, and resins without a strong UV stabilizer yellow faster than others. Note the resin brand on every piece so that if one starts yellowing, you know exactly which brand to avoid for anything that'll sit near a window.

More than most beginners expect — even a slightly off ratio can leave a piece permanently soft or sticky, and "a little extra hardener" does not cure it faster, it just breaks the chemistry. Record the exact ratio you used each time, and your own resin-brand autocomplete fills it in from past pours so you're not re-guessing it from memory.

Yes — resin generally wants to be poured somewhere around 68–85°F with humidity kept low, and drifting outside that range is a common, invisible cause of cloudiness, extended cure times or a tacky finish. Logging both on every pour turns a vague "the weather was weird that day" into a comparable data point.

Different brands behave differently for the same technique — one might be great for deep pours and terrible for thin coats. Every record you save adds to your own brand history, so the app can remind you which brand you reached for last time you did something similar.

Full cure can take several days longer than "touch dry," and listing a piece before it's truly ready risks a return or a bad review. Log full-cure time, any issues you noticed, and what worked, so you're listing with a track record behind the piece instead of a guess.