Suction cups with plastic thumb screws will fix foamex boards up to 7.5mm in thickness.
These Adams suction cups are also useful for caravan wheel arch covers and blinds. If using material up to 2mm in thickness, then you could also consider:- suction cups with barbed tacks.
Attach to glass or any other flat, clean, dry, slick/shiny, non textured, non porous surfaces like mirrors, glossy plastic, glazed ceramic tiles and car body work etc. Each 47mm Adams suction cup is rated to hold 3 pounds (1.36kgs) in weight. To fix a thin board - snip a little off the end of the thread with a finger nail cutter to shorten the screw. This is to prevent the screw piercing the bottom of the cup when drilling down.
Suction Cups: Adams worlds best Suction Cups work better for longer. Suction Cups Direct sells crystal clear everyday suction cups from 22mm to 85mm in diameter. Our range includes suction hooks, suction cups with screw stud and nut, suction cups with mushroom head to suction cups with bulldog clips. Buy suction cups from www.suctioncupsdirect.co.uk