These pull saws are great for projects but the plastic handle they come with is flimsy and the button eventually gives way and the saw blade won't stay put. I make handles for these saws which are much sturdier.
I start by cutting down a guava of the appropriate diameter. These are invasive and everywhere and they will also coppice quickly when cut down to a low stool, so they are never in short supply.
Then I cut the thick end to handle length.
I make a cut down the middle of one side that is long enough to house two bolts that will hold the blade in place.
I drill some holes with the hand drill and put some bolts in.
New saw versus an older saw handle of a similar design that is missing some teeth. I also had to set back the older saw farther into the handle and punch a new hole after one of the metal prongs holding the saw in place sheared off. I use these things pretty heavily.
The finished saw by itself.