DIY beading tool. Professional beading tools are expensive. I searched around and built some test pieces from web sources but the best uses modified crimp tool from HF or most any parts store.
I cut the end off that cuts wire so I had left just the crimp part. If you use just like that you put on good bead but the end of tube is reduced in diameter a little
by tool. If you look at picture of tool, see the red dot which is where I filed/ground out a relief on one side so that you get a nice crimp w/o affecting the diameter.
You crimp, move a little just overlapping until you have ground around tube. Even a 3 " tube just takes a couple min and because you slide tube into tool till it bottoms, the crimp is even
all the way around and is nice and smooth for your tubing to slip over.