Nerve, you could use the same method for the straps as you did for the bedrolls. Roll the putty out thin with a rolling pin and some baby powder to prevent it sticking. I do this on a small piece of glass about 5x8 inches. Then, using a #11 blade cut the size straps you need. If you are working on lets say a sleeping bag size piece, sewing thread works fine as you can tie it and let the free ends hang naturally. Once cured, paint as normal. HTH "Q"