I am now the proud owner of a Singer 257 thread injector! I picked it up at a sale yesterday. I have tried it out on some cotton shirts and it works great. Just picked up 3 yards of ripstop. My question is; how do you recommend cutting it? Pinking shears?, regular shears? Do you seal the edges or just hem it? Any suggestions are welcome. My first project will be a pad sleeve with shoulder and thigh foam additions. Thanks all!