echo47, IanP, thanks for your responses.
I checked Edmund Optics/Scientific, the adhesives they have are expensive, and UV cured...but you're right, it was a very good starting place (free advice, and finding what chemicals are used for the process). Thanks man.
As for 'making your own' acrylic cemet. I came across that article myself, its a good idea because I can make up the stuff, as and when I need it. Unfortunatly, I can't find any acetone anywhere
I think it was banned here in the UK, because its a strong carcinogenic (causes cancer, and nasty health problems)... I could be wrong.
That said, premade 'decent' cemet is very expensive (I'm basically a cheap-skate). But the 'nails' idea is pretty good. The stuff my sister uses is pretty much 'superglue' (cyanocrylate) which I've tried and it does indeed 'melt' the acrylic, but its not water clear.
Anyway, all this is for some silly little project I've got, which involves making lightguides, and various pretty LED displays for my computer. And my little 'experiments' are simply testing various methods of mouldings, acrylic shapes, TIR, etc..
THanks again, hopefully I'll have a website up soon, with all my idea's....modding for 'engineers', not 'computer people'
BuriedCode.