You've got to hang your exhibition project up correctly... sounds simple. There are lots of pitfalls and I hit quite a few. Double sided tape - forget it. Its good for sticking work in a sketch book but not strong enough for holding prints or paintings on the wall, even if they are on nothing heavier than cartridge paper. Dress making pins look like a good solution, especially if you have a handy pin pushing tool. First off, make sure the pins are pointing downwards otherwise gravity takes over and you beautiful work flops down. Second, don't push them in too far or you will never get them out again. Pins seem a bit - well small and weak, but in actual fact... yes they are, no matter what Neil says. What about the hook and tuff of velcro?? Great idea, strong and reassuring, but not entirely dependable. The glue on them does not like nicely emulsioned walls and guess what my beautifully white walls have on them? Now I'm not one to complain, but five attempts at hanging 15 pieces does begin to get on the nerves a bit. Last night I thought I had cracked it, only to go into college this morning and find a mixture of not quite right rebellious pieces. I decided to go for belt and braces. Pins, glue and velcro... that's belt, braces and another belt. Reckon I've sorted it ha ha ha.