Yes I put the end caps inside the tubing. I use a press to set the welds if I put the caps on the ends they buckle out even more and I loose pressure and end up with delams on the ends of the billet. Just built a new benchtop 25 ton press really helps with demascus. Just finished a nice 208 layer piece for my daughter.
Just started making sheaths for my blades. New tools and different skills but adds alot.