Replies

1. 
   Eef | Jun 13, 2009 11:29pm | #1

   dan,
   pardon my ignorance, but what in the name of all things good, is a beecham skewchigouge??? can you post a photo?
   eef

   just googled it. man, that looks like a serious challenge to sharpen. the google search did show a pdf that describes what to do and not do when grinding. i see that one can get some tiny detail in it's use. would not mind trying one. more than likely, someone here will know what to do.
   eef

   
   

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   Edited 6/13/2009 4:38 pm ET by Eef

1. 
   danm | Jun 14, 2009 12:12am | #2

   Here's a link to the image at Woodcraft.http://www.woodcraft.com/images/products/140474.jpg It's a solid round rod. The top edge is easily sharpened (with a jig) by laying on the top of an 8" wheel. It's the bottom that's tricky. The sheet that you mention (I've seen several versions) is very sketchy. The idea is that the top piece is supposed to be a perfect ellipse. The chisel cut is the problem. I don't really know what the angle should be. (Of course, I didn't think to measure it when it was new.) The tool works like a spindle gouge, and also like a skew. It is really hard to have it catch. Sharpening advise much appreciated %^)

2. 
   derekcohen | Jun 14, 2009 02:58pm | #3

   Hi Dan

   I am either going to get this completely right .. or not .. since I have not used one like this. However, from the image it looks extremely easy to hone.

   About a week ago I ground and honed a blade that looks very similar, so ..

   You have a round bar and you want an ellipse? All you need to do is gring the bar at an angle, and you will automatically create a bevel with an elliptical back. This will occur whether use a hollow or a straight grind.

   I would recommend (if you are using HSS) grinding on a disk sander. Either use the mitre gauge or make up a jig to reproduce the desired angle. What angle? Try 25 degrees.

   Regards from Perth

   Derek

    

1. 
   danm | Jun 14, 2009 05:54pm | #4

   Well, that's worth a try, but I guess I still haven't gotten this described accurately. Here is the Crown tool instruction sheet as tidied up by Woodcraft:

   http://www2.woodcraft.com/pdf/77B87.pdf

   Note that the top facet (the ellipse) is concave, and the "chisel" facet, the "bottom" one, swings around that elliptical outline, but doesn't intrude on it.

   The tool came exactly like that, and for a long time I only put the tiniest hone on the chisel. But. . . hone it enough, and you've changed the shape. Now I can't quite recover the original.

1. 
   derekcohen | Jun 14, 2009 06:18pm | #5

   Hi Dan

   Hollow grind (instead of the flat grind I suggested before), and then grind a flat opposite the hollow (as if you were creating a bevel on a blade). The ellipse will remain but becomes pointier.

   Regards from Perth

   Derek

    

3. 
   Harry6144 | Jun 14, 2009 08:08pm | #6

   If you know someone who has a Tormek they can probably do exactly what you want.

    

   Harry 6144

1. 
   danm | Jun 15, 2009 04:45am | #7

   But, of course, I'd rather do it myself. . .Any Tormek guys out there who have an suggestions, I'd appreciate them. dan