I think David is right and wise.   The angle is desirable for plectra shape at pluck and does help escapement but for years I worked with less angle than I now use without problems.  
M



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Tuesday, 5 January 2016, 04:59 +0000 from [log in to unmask]  <[log in to unmask]>:
>At 23:21 04-01-16, Daniel Jencka wrote:
>
> >Unfortunately, my Zuckermann plastic jack tongues are of the 90deg
> >variety. This saddens me as I was really looking forward to this
> >experiment. I wonder if there is some way to overcome this challenge
> >short of replacing all my jacks?
>
>I am not sure that the Zuckermann plastic jacks can work with 
>quill.  I have their wooden variety.  The issue, in my opinion, is 
>not the question of angle (the wooden ones are 90 degrees and work 
>fine with quille), but whether the quill will hold in the slot.  I 
>suggest that you experiment: you have nothing to lose, and can always 
>replace the delrin.
>
>David
>
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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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