One of the things I love about living in Florida is that our winters tend to be quite reasonable. And by reasonable, I mean I can wear flip-flops pretty much any day of the year. It also means I don’t have to worry much about casting resin in cold temperatures. But I know many of you aren’t so lucky, so here are a few of my cold weather resin casting tips.
Before we get into that, there are some resin basics you need to know:
When you buy two-part resin, it comes in two bottles: resin and hardener. When you mix them together, a chemical reaction occurs that produces heat. This is what causes your resin to harden. The ideal room temperature for this to happen is 70 to 75 degrees F. That’s not so difficult to achieve during the summer, but during the winter, it can be challenging.
Here are some cold weather resin tips to make sure your resin cures hard and clear:
1. Create a resin ‘hot box.’
Take a large cardboard box, and put in a gooseneck lamp with an incandescent bulb. Turn on the light while your resin projects are curing. The incandescent bulb will create a little heat, and the cardboard box will keep the heat inside. Be sure to cover your projects, as those bulbs also attract dust. You can also use a metal cabinet for this.
⭐️ BONUS: Here are other resin casting tricks I always use.
2. Cast your resin in a smaller room and use a space heater.
Make something like a bathroom or a walk-in closet your resin casting room during the winter. Turn on a small space heater while you are casting your resin. The heater will bring the space up to the low 70s without turning on the full heat to your house.
⚠️ IMPORTANT: Please don’t leave a space heater unattended.
⭐️ BONUS: Here’s the resin supply list you need to save you time and money.
3. Warm your resin before using it.
Put your resin kit in a warm water bath for 5 minutes at a time before using them. Not only does this warm up the resin, but it thins it out, too, making it easier for the resin to release bubbles.
⭐️ BONUS: Here are other ways to rid your projects of resin bubbles once and for all.
4. Warm your mold before adding resin.
Before pouring your warm resin, in your warm room, into your cold mold, run a heat gun over the mold first. This helps the resin retain its heat instead of the resin warming the mold.
⭐️ BONUS: Here’s what you need to know about silicone mold care.
5. Plan ahead.
Use your resin when the outdoor temperature is going to be the hottest. That might mean checking the weather and rearranging your schedule to pour resin in the middle of the day.
Ready to go beyond learning cold weather resin tips?
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