Back in July 2006, Don McConnell made reference to a treatise by
Nicholson with regard to file manufacture, and the diagrams appeared to
strongly imply (*) that toothing plane blades were made the same way,
since the teeth shapes were very similar.

http://swingleydev.com/archive/get.php?message_id=161964&submit_thread-
=1#message

I have (finally!) got round to photographing the 3 toothed blades in my
possession.

In the era of digital cameras and desktop photo editing, a clear
photograph with a scale item in it also allows accurate measurement to
be taken, by pixel counting, and then conversion via the pixel count for
the scale item.

So here's the picture:

http://galootcentral.com/components/cpgalbums/userpics/10152/toot-
hing_3.jpg

and I can say that the tooth spacing is quite consistent; the top two
are 17 TPI, and the bottom one very slightly coarser at 16 TPI.

Salaman say that toothing blades come in "coarse, medium, and fine" so I
guess there are more blades out there waiting for me.

The top teeth looks different, but only because the bevel is as
purchased (i.e. steep and rounded ;-) whereas the lower two have been
carefully ground and honed at 30 degrees (I think)

   BugBear

(*) yeah, it's a split infinitive - wanna' make something of it?
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