How to Use Epoxy Resin for Crafts | First-Pour Basics

Learning how to use epoxy resin for crafts comes down to one rule: measure exactly, mix thoroughly, and wait long enough. Epoxy resin typically arrives as a two-part system — resin (Part A) and hardener (Part B) — that must be combined according to the manufacturer’s ratio. Nail that step and the rest is mostly patience. The core workflow is consistent across brands: prepare your space, measure, mix slowly, pour, remove air bubbles, and let the piece cure fully before you demold or handle it.

The Standard Pour Workflow

The seven steps below represent the typical process described in craft guides, but your specific product’s label always wins. If the instructions conflict with anything here, follow the label.

Start by setting up a level workspace protected with a silicone mat, wax paper, or similar barrier. Your molds and surfaces must be clean, dry, and dust-free. Gather everything first: resin, hardener, measuring cups, stir sticks, gloves, and a heat tool for bubbles.

Measure Part A and Part B exactly. Consumer systems commonly use a 1:1 ratio by volume, but some use 3:1 or another ratio, and a few require weighing instead of measuring by volume. Check your product’s stated ratio and measurement basis before you pour anything.

1. Mix slowly for about 2–5 minutes, depending on the product instructions. Scrape the sides and bottom of the cup constantly — unmixed resin causes tacky, weak, or failed cures.
2. Rest briefly so air bubbles rise to the surface.
3. Pour slowly into the mold or onto your project surface in a thin, steady stream.
4. Remove bubbles by passing a heat gun or torch quickly over the surface. Never hold heat in one spot.
5. Cover the piece to keep dust off, then let it cure undisturbed on a flat surface until fully hard.

Common Mistakes That Ruin a Pour

The difference between a glass-clear coaster and a sticky mess usually comes down to one of these errors. Each one is easy to make and easy to avoid.

• Wrong ratio. Using more hardener to speed things up actually prevents proper curing. Follow the ratio exactly.
• Incomplete mixing. Skipping the sides and bottom of the cup leaves soft, uncured spots in your final piece.
• Stirring too fast. Vigorous mixing whips air in; several craft sources explicitly advise slow, gentle stirring.
• Dust or moisture. A dirty or damp mold ruins both clarity and adhesion. Silicone molds are the standard compatible option, but the surface must still be clean and fully dry.
• Rushing the cure. Demolding early deforms the piece. Full hardness can take longer than initial demolding time.
• Overfilling layers. Craft Resin’s guide warns not to exceed the recommended pour depth — the resin can burn or cure unevenly.

If you are deciding which product to buy for your first project, our tested roundup of the best epoxy resin for crafts compares working time, cure speed, and value across popular brands.

Timing, Temperature, and Layering

Cure times range widely: some products demold in 10–24 hours, others need 24 hours, and thicker pours can take 24–72 hours or longer. These are always product-dependent, so the label takes priority over any general range.

A warm, consistent room temperature with low humidity gives the best results. Work in a well-ventilated area — one craft guide recommends a fan — and wear gloves. If resin touches your skin, wash immediately with soap and warm water. A mask or respirator and goggles are advisable, especially against splashes or fumes.

For layered or coaster projects, a common approach is to pour the first layer about half full, add decorations after it partially sets, then pour a second layer on top. Wait the full instructed time before demolding. If the piece has rough edges afterward, sand them with fine-grit wet/dry sandpaper. You can also warm resin bottles in warm water to improve flow in cooler rooms, but only if your product recommends it.