clear hardening resin?

[balmerchris]

I have collected up a couple of hundred 410 cartridges with the intention of reloading but cant be bothered with the paper work, or the reloading come to that. So was thinking about cutting the brass ends off and emersing them up to the end cap in some sort of clear resin to make some nice coasters. Any ideas what I could use?

 

[brightspark]

https://www.google.co.uk/#q=clear+resin&safe=active