Canon AE1/AE1 Program Viewfinder/Hotshoe Cover

This is my first attempt at drawing a printable thing. I drew it is Google sketchup and then used the skp_to_dxf.rbz extension to export it as an stl file

This is my best extrapolation of a small plastic part that came with every Canon AE-1 and AE-1 Program Camera. Its purpose in life is to cover the Viewfinder opening when the Camera is being used without a head/eye peering into the viewfinder and thus light could leak in and cause the Light metering to mis-expose a picture (example: taking