<html><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:12px"><div id="yui_3_16_0_1_1439417612586_3166">Brian,</div><div id="yui_3_16_0_1_1439417612586_3166">Did you sort out the boring bar for cutting inside o-ring grooves? I need to do the same and could use some advice, I was going to make a boring bar cutter with a very narrow cutter, narrower than the required groove and do multiple cuts. I tried to make a groove cutter that was the full groove width but it was to much. </div><div id="yui_3_16_0_1_1439417612586_3166">Hank</div></div></body></html>