View Single Post
  #8 (permalink)  
Old 10-31-2009, 01:45 AM
RONWEN RONWEN is offline
Join Date: Jan 2009
Location: 41N 79W One of the Thirteen Original Colonies of the United States of America
Posts: 4,820
Default Re: Palm brace and drill driver set from BCTW

Originally Posted by MichaelKellough View Post
Those bits should work at least as well as ordinary 1/4" hex shank bits. If BCT persuaded the manufacturer to tighten up the specs they should work even better, but they still won't be as good as Cetrotec bits. However, at the low low RPMs you're going to get with the hand cranked brace a little runnout won't matter.
That brings up an interesting question on drill point grinds. In metals there are various grind angles, relief angles, split points, thinned webs and special grinds for different metal applications. -- My experience with woods has been that my 59 degree (118 included) bit angles work fine but usually brad points work a little better. I wonder what grinds are on the BCT and Centrotec drill bits?
Reply With Quote