It very important to apply a lot of clamping pressure while the T-88 epoxy hardens.  

I read an old book, 1939,  on woods for military aircraft construction and it said that you should apply 200 psi to the glued joint for proper adhesion.  If you think about it, this is a tremendous amount of pressure, much more then these clamps can supply.    An 8" by 5" plate with an area of 40 square inches would  require an 8,000lb weight to be laying on the joint.  With that much pressure you probably wouldn't need any glue.   If anyone can tell me more about this please send me email at the bottom of this page.