solartex is pretty low temp....you should be fine. try a piece like said, but i think u'll be ok. ive covered foam and plastic with solartex before, it didnt melt that. works good. probly my fav covering for big stuff. i dont know what the wing tips look like on your spacewalker, but if they are small enough, heat the covering with a gun and pull it over. that way the heat isnt concentrated like the irom would be.