Projector Ceiling Mount

I hit the store to buy a ceiling mount for my Optoma HD66, but the store was out of stock. So I designed up this one, and printed it out. It's designed specifically for the HD66's slightly odd 100 x 100 x 110 mm triangular M3 mount, but a redesigned ProjectorPlate.stl will let you stick any projector on there. Swivels in XX, YY and ZZ, and is fairly stable too.