I am shaping a board with eps and rr 2000 epoxy. Planning on installing fcs x2 plugs but I've read a bit about melting foam. If I use glass inside the hole, make the hole snug and use ice packs should I be fine ? Do you recommend doing a two part pour ?
A two part pour is definitely the way to go. Just put a little resin in the bottom of the holes to set the plug and wait about an hour to fill the rest of the perimeter with resin. Use a dixie cup or something like that to drizzle the resin around the hole.