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Subject:
AW: Plectra mortise punch
From:
Michael Bender <[log in to unmask]>
Reply To:
Harpsichords and Related Topics <[log in to unmask]>
Date:
Thu, 4 May 2017 06:47:26 +0000
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I use a watchmaker's screwdriver. You can buy them in any width. I shorten it to get tot he thickness I need. 

But first  I drill a 1 mm hole for clearance, so the tongue (either holly or checker) does not split.





Cheers





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Von: Harpsichords and Related Topics [mailto:[log in to unmask]] Im Auftrag von Rob Brooke

Gesendet: Mittwoch, 3. Mai 2017 22:32

An: [log in to unmask]

Betreff: Re: Plectra mortise punch



Paul, I have been using a drill bit for years without any trouble. In shaping the punch tip, I have been careful not to heat the drill bit to preserve its hardness. I suppose I could get a small arbor press but I have been using my drill press to do the punching. I clamp the belt which drives the drill so the chuck cannot turn, tighten the punch in the chuck and then punch happily away. The holly sustains the punch well though there is some wastage. I make so many tongues at a time that throwing a few away is of no consequence. Having the punch stroke moving perfectly in a single plane should alleviate any tendency of the punch to bend, which the drill press does. I hope this helps.



Rob



--

ROBERT BROOKE HARPSICHORDS

4214 18th Ave W

Bradenton, FL 34205



www.robertbrookeharpsichords.com



941-746-6725



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Note:  opinions  expressed on HPSCHD-L are those of the  individual con-

tributors and not necessarily  those of the list owners  nor of the Uni-

versity of Iowa.  For a brief  summary of list  commands, send mail to

[log in to unmask]  saying  HELP .

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