3M makes a few different two sided tapes; some padded, high strength, some unpadded. The old R/C standard is servo tape, which is thin but VERY strong (almost like gluing it down...hard to get it off intact). There are many varieties of it..some for putting on aluminum house siding, many auto applications. The stuff I've been using for a while now I got at an auto parts store. It's for attaching trim molding on cars; very strong hold, butyl based so once it cures it is a very secure hold. It was fairly inexpensive as I recall; I got enough for me, three friends and we'd still have lots left after a lifetime of use. You DON"T need that much, and the padded stuff Staples or Office Depot carry will work fine.