I'm not really well versed in epoxy usage, but in my experience you will likely need to thicken the epoxy somewhat to keep it from migrating out of the joint before it sets up. I mainly use T-88 (already pretty thick for epoxy) for various types of glue joints, and usually could do a better job if it was even more viscous.

Concrete blocks and some method of distributing the weight will probably work fine, but you just don't want to over-clamp and squeeze too much epoxy out.

: Thanks Aaron and Bill. It's a good point about the cost of adhesive,
: especially since it will take a lot, gluing the faces together. Is
: thickened epoxy the best choice? As Bill said, I have the wood.... As to
: clamping, I'm thinking of stacking them and using weight - probably cement
: blocks on a timber (the strong back?) to spread out the pressure.
: Will