Collimation Ring for Hadley 114mm Telescope

A quick printing collimation ring. Prints in under 10 minutes and weighs under 5g. It's raised so only the 3 corners should touch the surface of the mirror. The inner ring is slightly larger than the secondary holder, making it easy to line up. 

Print as oriented in the STL. Then when you place it on the mirror, the flat side (the bottom of the print) should be facing upwards. 

NOTE: You don't want to get grease / fingerprints on your mirror. Wear some gloves if you have them, or you can just drop it on the mirror to collimate, and then flip the scope over and it should fall off.