how can I put the handles safely? will do it for the first time, any tips? thanks 🙏🏻🧡

Some people put it once you pour all the resin (when start to dry 10 - 25 min). Also you can install the handles with a drill

Why is one of the coaster molds a different size?

I’m assuming it’s for the purpose of you want your coasters some what smaller? Or a little larger you gave an option in size that’s what I thought..