I done some with JB weld!
back in the early 70s there was a shortage of epoxys, why ? I dont know
JB weld was easy to get hold of, so a guy came into the shop and wanted a 375HH glassed. I told him that I was all out of Devcon and I would need to use another brand he agreed to it. so I used the JB and it worked great.
LongRifles is right you can use a lot of diffrent typoe of epoxie.'
Lately I have been useing marine tex.
It looks like a CNC cut an the beding job LongRifles has posted.