I already checked this to that, but it only has "plastic" as a
choice, not acrylic, and so wasn't helpful.
Acrylics are assembled with a solvent. Essentially you weld the
The joint must be perfectly mated, as the solvent will not fill a
gap. Also the mating edges should be as smooth as possible. Polishing
is not necessary, but a fine emery or scraped finish is preferred.
The two pieces are held in position and a small amount of solvent is
run into the join. Capillary attraction draws the solvent all the way
between the mating surfaces. As the pieces are held together the
solvent softens a thin layer of each piece which then meld with each
other, and in about 30 seconds harden up again.
If the joins are well prepared and the solvent carefully applied the
resulting join will be invisible. Often a few air bubbles get trapped
in the joint, but with practice they get fewer and fewer.