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Building Tips and technical articles. => Building techniques => Topic started by: Paul Allen on November 10, 2019, 04:46:02 PM

Title: Horn leg holes
Post by: Paul Allen on November 10, 2019, 04:46:02 PM

Just interested how you guy's go about drilling holes in basswood for control horn legs,end grain.
How do you stop the drill from wandering?I did two at the weekend using a Brad point bit,it worked
but still not repeatable,some holes were useable,but not all of them.

Title: Re: Horn leg holes
Post by: Ken Culbertson on November 10, 2019, 10:28:01 PM

Couple of things.  Get some plexaglass or preferably center point rim cut drill bits and run the press at high rpm and slow steady feed.  Bits designed for metal will drift in wood.  Or, just round the ends of the horns use aluminum tubing bushings.

Ken

Title: Re: Horn leg holes
Post by: Brett Buck on November 10, 2019, 10:34:37 PM

I don't use basswood blocks anymore, I build it up from layers of plywood. But, when I did, I drilled the hole first, and then cut the block to fit on the end of the flap afterward.

     Brett

Title: Re: Horn leg holes
Post by: Randy Powell on November 11, 2019, 01:13:18 PM

I used a mill and 1/8" or 3/32" end mill. Works.

Title: Re: Horn leg holes
Post by: Paul Allen on November 11, 2019, 02:53:13 PM

Thanks for the  idea's. Will give them a try on the next lot.
Paul