Posted by Greg Coffin [4.225.211.158] on Monday, January 07, 2013 at 13:30:11 :
In Reply to: Would half rings work? posted by Chris Case [75.36.43.187] on Monday, January 07, 2013 at 10:43:52 :
An octagon would be very convenient, since it would keep from rolling and give you angles to work from. And easy to fabricate.