On 5/7/2010 11:04 AM, Denis G. wrote:
On May 7, 9:29 am, "Bob La wrote:
So what's the proscribed method? I expect I need a pretty consistent radius
bottom. What's the best way. Make a rough semi V lathe bit, and then make
a decent round one to finish?

The Parker O-Ring Handbook (9 Mb) discusses some of the design
criteria for o-ring grooves. See Section 4:
http://www.parker.com/literature/ORD...g_Handbook.pdf

http://www.allorings.com/
I like this site. Click on "O-Ring Gland Design"
Randy