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Thanks, guys, for the feedback. Good to know that I'm not wasting my time uploading the images.
Well, the new back end is finished. I could have used a CDK250 focuser but I wanted a longer stroke in order to accommodate various configurations without the need to make many different adaptors.
So basically I modified the CDK focuser design by providing it with an extra long inner sleeve and a longer rack. I also decided to use adjustable teflon pads instead of ball bearings. I have designed many different focusers over the years but never one with teflon pads, and I wanted to see how good that option is. So far it seems promising - it was quite easy to adjust for concentricity, on the lathe, and now it is just a matter of how well it will take the test of time.
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