[exavid]

A cheap source of ABS is ABS pipe. You can get black plastic pipe at most hardware stores. Cut off a length, saw one side of it lengthwise, heat it in an oven or with a heat gun to flatten it out and you've got sheet ABS. The smaller pipe and fittings will make slightly thinner sheets. You can rough cut a piece, heat it up and press it in or over a cracked part to mold it to fit then glue the piece in with ABS cement, the cheap black gooey stuff from a hardware store. Not the two part stuff, just the old ABS stuff in the screw top can with the dauber under the lid.