Cold resin is thick, hard to spread, and loaded with microbubbles. Warming it up first makes it flow better and lets bubbles escape much more easily.
Before you measure and mix, set your tightly capped resin and hardener bottles in warm (not hot) water for about 15 minutes. Keep the bottles from tipping or going under, and dry them well before opening.
💡 Keep in mind: Warm resin cures faster, so you’ll have about 10 fewer minutes of working time. Use it soon after mixing.
Want the full rundown? Read our blog: Why Do I Need To Give Resin a Warm Water Bath?
