Originally Posted by dkabasketlady
You're still going to have to use another kind of padding(insulbrite) because I'd think that the way it's set up now it would scorch! I'm not for sure, but just thinking about this. Maybe that would give you some extra thickness and the staples wouldn't poke thru or get smaller size staples. Let us know what you end up doing.
Yeah, watch old mattress pads, some of them have polyester for the filling; not good for ironing on. Best thing is to find some old wool blankets or even some wool fabric and layered. Then put heavy muslin over the top or something like that. Just make sure you are using all cotton fabric. 1/4" staples are easy to find, and will go through all your layers & plywood.