Originally published June 2012. Updated September 2019.
Frequently asked questions by those new to resin jewelry making
Plus my resin jewelry making and crafting tips for beginners
1. Is resin dangerous?
You should always take the appropriate safety precautions when working with any resin. At a minimum, always wear gloves and work in well ventilated area. Other resins, like some polyesters and polyurethanes require special ventilation equipment and a respirator. The best way to learn the safety precautions you need to take when using a resin is to read the product’s safety data sheet.
2. So how does resin harden?
With the exception of UV resin, you should purchase your resin as a kit, which contains the resin plus the hardener. Each are two inert liquids by themselves, but when mixed, a chemical reaction occurs. The reaction causes heat production which allows the resin to cure.
3. Can I save extra mixed resin for later?
No, once resin is mixed, you must ‘use it or lose it’. It begins to cure once the two parts are mixed together.
I always like to have a few resin experiments ready to go for the times that I have leftover resin.
4. Do all resins mix the same way?
No. Each resin and hardener has its own ratio. Follow manufacturer directions exactly. This includes paying careful attention to the minimum and maximum mixing amounts.
This article explains how to measure and mix epoxy resin in five easy steps.
5. Can I mix and match resins and hardeners?
No. Resins and hardeners are specifically formulated to go with one another. You must use the two components purchased together.
6. Don’t you go a little overboard on this resin measuring and mixing procedure? I see people on youtube using the bottle cap or eyeballing it in a cup.
Sure. I have seen that too. I’m sure it works…at least part of the time. I want to be sure it’s right EVERY time. Here’s how I like to measure and mix resin:
7. How do you get out bubbles?
That is a whole topic onto itself! Here are my 10 tips for getting bubbles out of resin.
8. The directions on the resin bottle said my resin castings would cure in 24 hours, but they are gooey. Do I need to let them sit longer?
If your castings are not solid at the end of the cure time, it is unlikely that giving them more time will help them cure. Here are some of my resin troubleshooting tips to help you the next time to cast resin.
9. Why are my resin jewelry castings tacky?
Ah, another good topic. You might want to read my post why is my resin sticky (which includes a link on what you can do to fix it.)
10. Can I bake resin in an oven?
Check with the manufacturer, but most epoxy resins will cure faster in a 150F degree oven. (if you do this, don’t use it for food again and make sure the area is well ventilated). Do not bake resin at temperatures more than 150F.
11. Can I use candy molds to cast resin?
Plastic candy molds do not work well to cast resin. Silicone candy molds generally do better, but you may not get a shiny finish. If you want to try, make sure it is a mold you don’t ever care to use for candy again and use a resin mold release.
12. Can I use anything to color resin?
Not exactly. Resin HATES moisture. You need to make sure whatever you’re using is dry (powder pigments, dried flowers, etc.) or if it is a liquid, use as little as possible. Colors designed for resin work best.
Want to learn more about resin jewelry making?
Join the VIP list for my upcoming online resin jewelry making class. No experience required!
Unpublished Blog Posts of Resin Obsession, LLC © 2019 Resin Obsession, LLC