Epoxy Resin for Crafts: 7 Mistakes That Cost Manufacturers Time and Money

If you’re using epoxy resin for crafts, you already know how important clarity, hardness, and curing time are. But even experienced manufacturers lose money due to hidden issues—yellowing, sticky surfaces, or cracking after shipment.

In this guide, we’ll uncover 7 common mistakes craft resin manufacturers make—and how to avoid them with the right resin formulas, curing methods, and supplier support.

Mistake #1 – Choosing the Wrong Type of Resin

Not all epoxies are designed for crafts. Using general-purpose resin often leads to cloudiness, poor mold release, or surface tack.

Fix: Use high-clarity casting resin like 3136AB or 316AB tailored for small molds, crafts, and doming effects.

Mistake #2 – Surface Turns Yellow Quickly

UV exposure is the #1 cause of yellowing, especially in transparent products.

Fix: Our 3136AB-SX series contains UV stabilizers for long-lasting clarity under display lights or sunlight.

Mistake #3 – Sticky Finish After Curing

This usually means an incorrect A:B ratio or that the resin wasn’t fully mixed or cured.

Fix: Use pre-weighed kits like 316AB-2 and cure at 25–30°C for 24 hours. Mix thoroughly with proper tools.

Mistake #4 – Cracking or Shrinking

Too much heat release during curing can cause shrinkage or surface cracks.

Fix: Choose low-exotherm resins such as 5051AB for thicker crafts, and pour in layers if needed.

Mistake #5 – Bubbles Ruin the Appearance

Rapid mixing or high ambient temperatures trap bubbles inside the resin.

Fix: Degas before pouring or use low-bubble formulas like 316AB-1. Work in cool rooms (20–25°C).

Mistake #6 – Poor Mold Release

Craft molds get damaged or leave residues due to incompatible resins.

Fix: Use mold-release compatible formulations like 3136AB-8 and test on new molds before bulk pouring.

Mistake #7 – No Technical Support from Supplier

Buying from a non-specialized seller often means no advice, no after-sales help, and inconsistent batches.

Fix: Partner with a craft-friendly supplier who offers test samples, data sheets, and real support.

Recommended Craft Epoxy Resin Models

• 3136AB – General clear crafts and doming
• 316AB – High dome, fast leveling
• 5051AB – For faux water and thick pours

📩 Need help choosing the best epoxy resin for crafts?
Contact our technical team: sale5@wingwaiepoxy.com
🔗 Browse our epoxy resin product catalog

📘 Want more tips? Read 7 mistakes to avoid when working with resin by Resin Obsession.