Could you use the hacksaw blade in your survival kit? not just for MFS's but you could cut 1 down to fit into your kit and wrap it with ducktape for a handle. maybe take a file to the teeth where you want the handle to be. could cut the end of the blade like a tanto and sharped it. My kit uses the container of a sewing kit. Its plastic and its a bit smaller than an altoids tin. The only draw back is that its plastic so i cant use it to signal with. it fits into my pocket nicley and doesnt weigh much. My other kit uses a small fishing tackle box.<br><br>