For my razorwire I use florist wire, its about 1.49 a spool and easy to work with. 22 gauge and 26 gauge are the sizes. I always do my razorwire in 6" sections. Take the 22 gauge wire and cut a piece that is approx 20-24" long. The length affects how many coils you'll have, the shorter the more spaced the coils will be and of course longer will have tighter spaced coils. Then take the 26 gauge wire and wrap it around the 22 gauge wire. I found it works best if you try and keep the 26 gauge wire at a 45-50 degree angle. If you want lots of wrapping then you could put it up to a 70 degree angle or so. Just eyeball it. Once this is done find something to wrap it around like a highlighter or thick sharpe. For cross beams you could use pieces of sprue since you already have a bunch. Just make little X's or you could just go single post as well. Another thing you can use is balsa wood. 1/8 or 3/16 works well but I think anything bigger looks too big. I also make the tops on the beams pointy, looks more dangerous. Put it all on a plasitcard base and add some debris and body parts and you're set to go!
Not trying to steal your topic just thought I'd let ya know how I do it
