On May 7, 10:39*am, " wrote:
On May 7, 11:04*am, "Denis G." wrote:

On May 7, 9:29*am, "Bob La Londe" 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

The other big name in o-rings is Apple. *I am sure they also have
information on the web about grooves for O-rings.

Dan

Thanks, I found them and bookmarked them for future reference (though
you have to register to read their technical library).