[Pins, is a method used to glue acrylic together. Basically you place straight pins between the two pieces being joined to create a uniform gap along the length of the joint. You then apply the Weldon along the gap and it weeps in to the void. You let it stand for, as Marc said, about 15 seconds for the Weldon to react with the acrylic, remove the pins and press the joint in place.]
Edited By SALT on 1100640188