Epoxy Resin Problems? Complete Guide to Fixing Bubbles, Curing & More

Epoxy Resin Problems? Complete Guide to Fixing Bubbles, Curing & More - Solid Solutions

EPOXY Tips

Better Results Start Here!

Simple tips that make a big difference when working with epoxy resin.

1. Measure Accurately

Follow the ratio exactly.

Volume vs Weight

Even small mistakes can cause sticky, soft, or uncured epoxy resin. Always use the manufacturer’s recommended mix ratio.

2. Mix Thoroughly

Mix slowly for 2–3 minutes.

Scrape the sides and bottom of the cup while mixing. For best results, use the double-mix method by transferring to a second cup and mixing again.

3. Check the Temperature

Work between 20°C – 25°C.

Cold temperatures can slow curing and trap bubbles, while high temperatures can shorten working time and make epoxy resin cure too quickly.

4. Prepare Your Surface

Clean, dry and dust-free.

Surface preparation is critical. Seal porous surfaces like wood with a thin seal coat first to reduce bubbles and improve adhesion.

5. Prevent Bubbles

Warm your resin and mix slowly.

Use a heat gun or torch carefully to remove bubbles within the first 10–15 minutes after pouring. Avoid overheating the surface.

6. Protect from UV

Use UV-stable epoxy resin.

UV-stable epoxy resin helps reduce yellowing over time and keeps your finish looking clearer for longer.

7. Work in a Clean Space

Dust is the enemy of a perfect finish.

Keep your workspace clean and cover your project while curing to prevent dust, hair, and debris from settling into the epoxy resin.

8. Be Patient

Allow full cure time.

Do not sand, polish, move, or heavily use your project before the epoxy resin has fully cured. Good results take time.

PRO TIP

A little preparation saves a lot of problems.

Take your time, follow the correct steps, and your epoxy resin results will look more professional every time.

Epoxy Resin Help & Expert Tips

Learn how to use epoxy resin correctly, avoid common epoxy resin problems, and achieve professional results every time.

What is Epoxy Resin?

Epoxy resin is a two-part system made up of resin (Part A) and hardener (Part B). When mixed at the correct ratio, epoxy resin cures into a strong, durable, high-gloss finish.

Epoxy Resin Mixing Ratios & Why They Matter

⚠️ Volume vs Weight Matters

Not all epoxy resin is mixed the same way:

  • Volume: Most art resins (1:1)
  • Weight: Professional systems

Do not swap methods. This causes sticky or uncured epoxy resin.

Common Epoxy Resin Problems & How to Fix Them

Sticky or Soft Epoxy Resin

Cause: Incorrect ratio or poor mixing

Fix: Remove uncured epoxy resin and reapply correctly

Epoxy Resin Not Curing

Cause: Wrong ratio 

Fix: Remix again with correct ratio

Cloudy or Dull Finish

Cause: Moisture or cold conditions

Fix: Sand and apply new coat

Fish Eyes

Cause: Surface contamination

Fix: Sand, clean, and recoat

Uneven / Tacky Areas

Cause: Inconsistent mixing

Fix: Sand and recoat

Yellowing

Cause: To much UV exposure

Fix: Use UV-resistant topcoat

Advanced Epoxy Resin Problems

Bubbles

Cause: Fast mixing or cold resin

Fix: Use heat gun 

Pinholes

Cause: Outgassing, rising air

Fix: Seal coat and reapply

Peeling

Cause: Poor preparation

Fix: Remove and reapply

Cracking

Cause: Thick pours

Fix: Apply thinner layers

Blushing

Cause: Humidity

Fix: Clean and recoat

Flash Cure

Cause: High heat

Fix: Mix smaller batches

Pro Tip

Most epoxy resin problems come from incorrect ratios, poor mixing, or bad temperature. Control these and your results will always improve.

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