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Re: Conn 444N design

Author: Chris P
Date: 2012-11-20 23:44

Grooved tenons provide less contact area between the tenon and the tenon cork - you're best with a completely smooth tenon for maximum adhesion with no voids between it and the tenon cork.

As cork is flat and never grooved to match the tenon, it won't conform to the grooves cut in tenons and will only adhere to the peaks and not the troughs, so the contact area is less than half of the width of the tenon cork.

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In the olden days when shellac was used to glue tenon corks on with, the grooves provided more surface area for the shellac to bond to the wood. But with modern impact/contact adhesives, they work best on two matching surfaces - the best surfaces both being flat.

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Former oboe finisher
Howarth of London
1998 - 2010
The opinions I express are my own.

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