CTC Dual build plate glass corner

This is a corner add-on to keep your glass build plate in place.
It is designed for the CTC Replicator Dual, it may fit for other Makerbot clones, but check the dinstance between the border and the center hole.
There are two version of this object, Left and Right. Print 2 of both.
Place the lower side laterally, so that the extruders don't touch the higher sides when moving from the home position.