ipad in otterbox clamp set for the ipad car cinema thing. Drawn in Vectorworks 2010, so source files can be made available, but may not be useful to many.

a derivative of the car cinema ipad holder, so that the ipad rev 1 in an otterbox can be held with the same idea. Use parts ABC from the original , and print 1 copy of the replacement arms. I have also made up an M4 wingnut to assist with tightening the clamp bolt.
I needed to ream the 4 Ø10mm holes slightly but the nut traps, the M4's and the slot and tag, and the overall fit is pretty good straight off the plan.