Well, now I've had that promised tour of your machine shop .
Looks like you don't have enough money in your budget for machine tools, so I'll continue to post my things as I get them done too .
OK, you asked for feedback, here's some for you. You told me before about some of the design issues with the Uncompleted 10", so I'm assuming you've addressed those in the new scope. I seem to remember they were mostly related to the portable use of the scope. The 20" won't suffer from having to be portable though.
I'm a little nervous about the ball end trusses though. I'm doing a thought experiment where the truss end clamps are loosened a little bit. If that were so, wouldn't you be able to twist the structure? Imagine giant hands grabbing the top and bottom of the scope body like grabbing two ends of a coke can. Apply a twisting force. Wouldn't the structure shift if that happened? I suppose if the scope were mounted in a fork, then there wouln't be much torsional force, but a GEM would have a similar effect to the giant hands.
I could also chime in how gorgeous it looks so far, but that would be very redundant on this post.
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