: That's a little scary for me. However I have found that the thin Diabloe
: circular blade that some of us use to cut wood strips also cuts really
: good on aluminum. I have cut 1/4 inch thick aluminum with no problems. But
: wear goggles.

: Another way of locking the tubing together would be to make a round piece of
: soft wood that would slide into the smaller tube for support, maybe an
: inch long, then take a center punch and punch the walls of the tube into
: one another in a few places locking the tubes together, then drive the
: soft wood out of the tube. The aluminum tubing would be driven part way
: into the soft wood but the wood could be pushed out of the tubing. The
: wood would also keep the tubing supported and round while center punching
: it. I like this idea but I can't do it now since I have the smaller tubes
: filled with foam. The epoxy idea should be fine I think.

: John

Don't use wood for tubing inserts. Works for awile then the wood expands as it absorbs moisture and will rupture the tubing.

Bill H.