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tapping pilot hole size?

1 reply [Last post]
Wed, 09/30/2015 - 11:18
Dave Blue
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Joined: 03/24/2014

I watched your reed replacement videos and took notes of the tools and size of screws etc but I didn't get the drill sizes if they were mentioned. What size is the pilot hole for the .80 tap?  And what size is the reed hole drill for the .80 screw?

Thanks.

 

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Wed, 09/30/2015 - 16:02
#1
Harp Tech Kinya...
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Joined: 02/07/2010
Hi Dave, For 0-80

Hi Dave,

For 0-80 threads:

  • #55 Tap Drill Bit
  • #52 Clearance Drill Bit

Your Harpsmith, Kinya

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