How to Mix Epoxy Resin Like a Pro: The Ultimate Guide for Tumbler Artists & DIY Crafters

Epoxy resin is a total game-changer for DIY crafters—especially tumbler makers who love that smooth, glass-like finish. But even the most creative designs can fall flat without mastering one essential skill: how to mix epoxy the right way. Proper mixing is the foundation of a flawless result—whether you're sealing glitter, adding pigments, or applying a crystal-clear topcoat.

So, what is the best way to mix epoxy resin for tumblers? Whether you're a beginner or looking to sharpen your skills, this step-by-step guide will teach you how to mix like a pro. From choosing the right tools to avoiding sticky, bubbly disasters, here’s everything you need to know.

Why Mixing Epoxy Resin Properly Matters

Mixing epoxy resin is more than just blending two liquids—it’s the start of a chemical reaction that hardens into a glass-like finish. For tumbler artists, getting this process right is critical.

Properly mixed resin will:

• Cure completely without soft spots
  
  

• Deliver a smooth, clear, bubble-free finish
  
  

• Stick evenly to the tumbler surface
  
  

• Avoid tackiness or yellowing over time
  
  

Short version? If your mix is off, your project’s at risk—no matter how pretty your glitter is.

What Is the Best Way to Mix Epoxy Resin?

To get consistent, high-quality results, the best way to mix epoxy resin is to accurately measure, thoroughly stir (slowly!), and pour in a clean, warm environment. Let’s dive deeper.

Step-by-Step: How to Mix Epoxy Resin Like a Pro

Step 1: Gather Your Supplies

Essentials:

• Resin (Part A) + Hardener (Part B)
  

• Graduated mixing cups
  

• Stir sticks (flat silicone or wooden)
  

• Gloves and mask
  

• Digital timer
  

• Heat gun or torch
  
  

If you’re working on tumblers, keep your cup turner, silicone mat, and leveling stand nearby.

 Pro Tip: For fast-drying tumbler projects, consider using Fast Set Epoxy—it’s beginner-friendly and perfect for quick pours.

Step 2: Prep the Workspace

Choose a dust-free area with a stable temperature.

• Ideal working temp: 70–75°F (21–24°C)
  

• Avoid humid or cold areas
  

• Keep all tools dry and clean
  
  

Step 3: Measure Accurately

Most epoxies require a 1:1 ratio (equal parts resin and hardener), but always check the label.

• Use measuring cups with clear lines
  

• Pour resin first, then hardener
  

• Don’t guess—even slight miscalculations can cause curing issues
  
  

Tip: If you’re looking for ultra-clear, artist-grade results for layered tumbler art, try the Art Epoxy from Artistry Epoxy—ideal for detailed, pigment-rich pours.

Step 4: Mix Slowly and Thoroughly

Should you mix resin fast or slowly?
Slow is key. Fast mixing causes air bubbles that are hard to remove on rounded tumbler surfaces.

Mixing instructions:

• Stir slowly in a circular motion for 3–5 minutes
  

• Scrape sides and bottom constantly
  

• Mix until it’s clear and streak-free
  

• Let sit for 1–2 minutes before pouring (optional)
  

Step 5: Pour and Pop Bubbles

Pour the epoxy slowly onto the spinning tumbler.

• Use a heat gun or torch 6–8 inches away
  

• Sweep across the surface to pop bubbles
  

• Avoid over-torching—too much heat can yellow the resin
  
  

If you’re doing multiple tumbler layers or want ultra-speedy results, Hyperspeed Epoxy cures fast and finishes with a durable, glassy surface—great for batch makers.

Step 6: Let It Cure

Let the epoxy cure undisturbed on the turner per the label instructions.

• Most resins cure within 8–12 hours
  

• Avoid touching or moving during this time
  

• Let cure for 72 hours for full hardness before shipping or heavy use

How to Mix Artistry Epoxy: Video Tutorial

Common Mistakes to Avoid

1. Guessing the Ratio

Even a small miscalculation can lead to a tacky or soft finish. Always measure precisely.

2. Mixing Too Fast

Trapped air = bubbles in your final coat. Slow, methodical stirring works best.

3. Not Scraping the Sides of the Cup

Unmixed resin or hardener can ruin the batch.

4. Cold Resin Bottles

Cold resin is thicker and traps bubbles. Warm bottles in a water bath (sealed) for 5–10 minutes before use.

5. Reusing Dirty Tools

Old resin, moisture, or debris can interfere with the chemical reaction.

Bonus Tips for Tumbler Artists

• Warm resin and hardener in hot water (sealed bottles only) for fewer bubbles and easier mixing
  

• Use silicone tools to avoid lint from wooden stir sticks
  

• Level your turner to prevent resin pooling
  

• Apply a second coat after curing if needed—just scuff and wipe down first
  
  

FAQs: Expert Advice on Epoxy Mixing

Q1: What is the best way to mix epoxy resin for tumblers?

A: Use a clean, dry cup and stir equal parts resin and hardener (by volume) for 3–5 minutes using a slow, circular motion. Scrape the sides and bottom while stirring, and let the mix rest briefly before applying it to the tumbler. Warm resin, a controlled environment, and high-quality products—like Artistry Epoxy’s Fast Set or Art Epoxy—can help you achieve pro-level finishes.

Q2: Should you mix resin fast or slowly?

A: Always mix slowly to reduce air bubbles and ensure a complete chemical bond between the resin and hardener. Fast mixing whips in air, which can ruin your finish, especially on curved surfaces like tumblers. Slow mixing combined with a quick bubble pass using a heat gun is your best bet for a clear coat.

Q3: How long should I stir epoxy resin?

A: Typically, you should mix for 3 to 5 minutes, or until the mixture is clear and free of streaks. Larger batches or cooler environments may need more time.

Q4: Why is my resin still tacky after 24 hours?

A: It may be under-mixed, improperly measured, or affected by cold temperatures. Double-check your ratios and mixing process next time, and consider using a quick-curing formula like Hyperspeed Epoxy for better reliability.

Q5: Can I speed up epoxy curing with a heat lamp?

A: You can gently warm the area to speed curing, but avoid direct heat. Using a fast-curing formula is safer and more consistent.

Ready to Pour Epoxy Like a Pro?

Mixing epoxy resin is a skill—but with the right technique, tools, and products, anyone can master it. Whether you're crafting a single custom tumbler or scaling up your tumbler business, Artistry Epoxy has the pro-grade epoxy resin you can trust for bubble-free, crystal-clear, and rock-hard finishes.

Explore the full epoxy collection now and pour with confidence!