Since we have about 8 inches still hanging out of the 4 jaw chuck, we are going to need to support the outer end somehow.
We will turn a plug that will fit into the 3.5 inch ID snugly.
In the pic, we have turned the 3.5 inch diameter and fit it to the outer end of the Collimation Tube. Before we removed it from the jaws, we drilled and reamed a through hole to allow us to align the part in the 4 jaw chuck easier and quicker.
We put a 0.500 inch drill rod in the tailstock drill chuck and slide that onto the reamed hole in the middle of the new tailstock plug.
Then gently tighten each or the 4 jaws carefully so that the part still rotates without binding...a quick check after tightening with the dial indicator and we are within .003 inches of concentric...ok for this piece.
-------------------- A few I enjoy,
and a few more in the works ;<)
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Re: 20 inch RC Robitic Build...a TEAM Effort....
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