ATM Rotating Cradle Rings

[Billy Rudock <Billy_Rudock@notes.seagate.com>]

I'm making a Borg (part metal, part wood) equatorial mount that is mostly like 
a split ring with forks.  What I need is some advice for making rotating cradle 
rings for a solid (non-truss) optical tube assembly.  The ideal design would 
allow for very easy tube rotation, with a moving force about equal to the other 
two axes.  Any words of wisdom?

If bend my own rings from aluminum stock I guess I need to make or buy a 
rolling former.  Does anyone have plans for one of these gizmos?

I searched the archives for rings (found: grinding, finder, defraction, wooden, 
PVC, bathtub.......) but not too much on these cradle rings.  If you remember a 
good thread or web page URL, I 'd appreciate a pointer search word clue.

Chin and eyes up!

Billy Rudock
Santa Cruz, California

     Backyard Astronomer, Bluegrass Musician, 
         Flyfisherman, Disc Drive Dabbler
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- - C'mon people, now, smile on your brother. - -
         Billy_Rudock@notes.Seagate.com