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| Headstock - Robbie O'Brien method -drill press http://www.luthiersforum.com/forum/viewtopic.php?f=10101&t=27301 |
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| Author: | John A [ Fri May 07, 2010 8:01 pm ] |
| Post subject: | Headstock - Robbie O'Brien method -drill press |
HI, Robbie - this is a question for you - but I guess anyone can answer. I tried the drill press method to cut out my headstock. It's great! Now I ran into one issue....and I think I know the answer but I wanted to ask. When I cut out my headstock, from the backside, once the drill bit hits the hardwood veneer, I got some tear out on my headstock veneer.... is there a way to avoid this ? Is it because my bit was not really that sharp ? what is the best way sharpen that bit - should it be sharp ? wouldn't it help to use a router bit in there ? Thanks !! PS - between your videos, and Chris Paulicks videos - and Cumpiano's book - I am building a classical .... |
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| Author: | Mike Lindstrom [ Fri May 07, 2010 8:13 pm ] |
| Post subject: | Re: Headstock - Robbie O'Brien method -drill press |
Are you using a beveled drill blank like Robbie does in his video. I sharpen it just like I do a chisel. Take your time when you first grind it. Keep it cool. Mike |
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| Author: | John A [ Fri May 07, 2010 8:29 pm ] |
| Post subject: | Re: Headstock - Robbie O'Brien method -drill press |
I think that was my issue - it cut through the cedar ok - and the maple and black veneer - but when it hit the 1/16" walnut it took out small chunks from the sides. My headstock isn't the same shape as my template anymore - but that is ok - I will adapt. But I do want to avoid in the future - my bit was not "sharp" if you tried to cut your finger on it or shave hair it would take a great deal of effort. |
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| Author: | Robbie O'Brien [ Fri May 07, 2010 10:42 pm ] |
| Post subject: | Re: Headstock - Robbie O'Brien method -drill press |
Keep it sharp and it should work fine. Take small cuts with each pass. |
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