My preference in the past has been Industrial Formulators of Canada (cold cure and S1 in particular). They have been absorbed by System Three so now I use one of theirs that is similar. Any real (not fast cure) epoxy will do this job pretty well.

Edit: I checked. For this job I used Silvertip Laminating Resin because I had it around.

The early bird gets the worm but its the second mouse that gets the cheese.