On Wed, 2003-04-02 at 21:02, Kyrre Aalerud wrote:
> I used a 1 part acrylic glue that dissolves the acrylic and lets it harden
> again.  I hope it isn't cyanoacrylate, as you've tried that.  It says

The cyanoacrylate (AKA SuperGlue) was better than the epoxy resin in
terms of strength, but it didn't have much gap filling ability.

> "methyl methacrylate" on the tube and it's called AcriFix.  It makes 100%
> transparent bonds that are supposed to be just as strong as the lexan i'm
> gluing.

Are you sure it's Lexan (ie. polycarbonate) and not acrylic (PMMA/methyl
methacrylate, sold under the trade names Perspex and Plexiglas)? They
look similar but polycarbonate is tougher and more expensive than
acrylic. I don't know if an acrylic adhesive will work properly with
polycarbonate. From what I've read (on the web site of a company that
sells adhesives, so take it with a pinch of salt) the one part solvent
based adhesive gives a joint with about 10-20% of the base strength of
the acrylic, and the two part polymer adhesive gives up to 40% when set
at room temperature over about 3 days and up to 60% when set in an oven
at 60C for 3 hours. I think the two part adhesive is basically a liquid
form of the acrylic itself which you mix with a small amount of a
chemical which causes it to knit into the surface of the joint and then
harden. It's called Tensol 70.

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