How can you drill a hole in acrylic sheet with out cracking the material around the hole?
A. The drill speed is too fast or there is too much pressure on the drill when exiting the hole at the underside of the acrylic sheet. Back up work with another piece of acrylic or plywood so the drill can continue through into solid material. If using a commercially available twist drill, ground to a proper angle of 60-90 degrees.
