Plexiglass/perspex/acrylic glue/epoxy recommendations?

Just about to start my 3rd & 4th watercooled systems 4th is for a friend).

I want to make some nice custom reservoirs & have some 6mm thick polycarbonate/acrylic (clear) lying around.

Only question is what's recommended to "glue" this stuff together? Some form of clear epoxy I assume, similiar to the stuff DD use to seal the barbs into the lucite top blocks...

Gonna have multiple returns etc...& I've got everything sussed except the bonding agant.

Any suggestions?

Silicone sealant would work well, and it's cheap.

Yep, sealant's a good idea for sealing, but actually making 'em - need something that sets rock hard.

The epoxy on DD's blocks is just that, rock hard & permanent.

Most silicone's can "peel off" too, so not great for a res