....My heavy supplementary handle was made out of a 5/8" bolt which I kerfed by putting 2 hacksaw blades side-by-side on a single frame. A cut off 20 penny nail made the pin. A large square nut locks it on the saw. A turned wood sleeve is glued over the top of the bolt. I posted a picture of it earlier in this thread.
Square_peg, I like the looks of your home made supplementary handle. Do you use the large nut to tighten the handle on the saw?
I've made one sup. handle but have thought a little about coming up with a design that folks could make with limited tools. I like the double hacksaw trick to cut the slot. Mine works well but required a welder, metal/wood lathe, drill press and cutoff saw to make.
Jim