[As of 10-30-14, I updated to a thicker version of the part with more clearance for strength since these seemed to break very easily.] Some tabs for holding the glass on the Onyx rev. 7 heat bed on the Rostock Max v2. It MIGHT work for other revisions. You screw them into the EMPTY bed holes where the binder clips usually go and then put the glass on. Development branch and Adobe Inventor 2015 file available at https://bitbucket.org/redoverred/onyx-r7-glass-tabs-for-rmv2

The tab with the hole goes UNDER the bed, you screw it into the bed, then you have the tiny tab on top to kinda hold the glass down. It isn't too important that it holds it down, since you basically want to prevent the glass from sliding around. The hole is a bit smaller than 3mm so you can just thread the screws into this without worry. You SHOULD be able to put the glass on and off without removing these, so print them in ABS for a bit more flex and temperature resistance. Print 6 of these, or more for spares, and make sure to spin them so the tab with the hole and the small tab are up to prevent bad overhang prints. They are pretty tough in ABS, although you CAN break them by hand so careful. Use flat panhead screws like the ones you installed the bed with so the glass doesn't hit the screws.

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rostockmaxv2, seemecnc, onyx