Hacksaw Handle

thingiverse

This is a standard Harbor Freight 6 inch hacksaw blade. You should be able to find this exact one on online marketplaces like Amazon and eBay without any issues. The tolerances are very tight, so make sure to hammer the blade into position with care. Don't worry, it's not a big deal once you get the hang of it. You can use a paper clip in the hole on the handle to add extra security to the blade, but I'm guessing you won't need it.