Hi everyone! I’m fairly new to resin crafting and just finished pouring some epoxy resin coasters. They turned out great, but the edges are a bit rough and uneven after demolding. I want them to have a smooth, professional finish. What’s the best technique for sanding and polishing resin edges? Should I use specific sandpaper grits or tools like a Dremel? Also, any tips to avoid dust getting trapped or scratching the surface? Thanks for any advice! geometry dash lite