Hadley - mirror test stand

This is a stand for testing 114mm telescope mirrors - useful for few people, in all likelihoods, but very useful for me.  

Not much to say on construction/usage.  I hate being so terse, but someone who needs one of these knows what they're doing.  I will be iterating this as I go - I plan to test hundreds of mirrors, so this will eventually be perfected.

This uses m3 hardware, 2 x (roughly) 20mm and two much longer screws.  Print 1 or 3 of the “nubs” - if you print the bottom two, spring load them.  You want 3 or 6 m3 bearings as contact points.