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ATM Aluminum tube thickness




I have a small 2.5" f10 spherical mirror from years ago that I am
wanting to make into a cute little travel scope.  I would like to use a
3.5" alum. tube, but have little idea of what thickness it should be.
Any suggestions would be greatly appreciated.

- Gil McFarlane


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Gil McFarlane Doctorgil@peoplepc.com  http://www.doctorgil.com

Lisa McFarlane  Lisa@LisaPhoto.com    http://www.LisaPhoto.com