if you keep it light, & take your time.
Here's a couple of pix of making scope collar parts for this project....
http://www.network54.com/Forum/451309/message/1243263254/Bushy+8-32+++8%26quot%3B+wheel%2C+5-8%26quot%3B+separation+between+50-55
Have to admit tho... I wouldn't even attempt it without the DRO.