Grinding

  Click here to read the article on sharpening by Alan Lacer

  in French  Alan Lacer

Grinding jig to sharpen the roughing gouge	'Oneway' grinding jig to sharpen the spindle gouge	Grinding the scraper

Grinding the tools was the most difficult part for me as a beginner, I found plans for a grinding jig on the site of a Canadian turner

( Jean Michel ) along with other tricks.

or Brian Clifford

Grinding & a few file strokes	Finished tool

To get the knack of it, a simple mild steel rod with a handle enables me to test various grinding angles on the lathe. Of course it won't cut for long but just enough to figure things out without sacrificing the HSS tools.

I have made a new "Oneway" jig with flat 5mn steel, because the one made of wood broke due to too strong tightening and I replaced the original grey grinding stone by a white grinding stone less aggressive to steel.

animated Gif
Adjustments of the 'Oneway' grinding jig	Front view

Adjustment of grinding jig Stationary Grindstone Click on the photos to make larger
Step 1:  Adjustment of the release of the grinding jig tool a little wood stopper serves as a marker, I set it at 50mm
Step 2:  Adjustment of grinding jig incline I used several indicators (5), I start with N°1.
Step 3:  Adjustment of the bevel of the tip of the tool It has to fit the grindstone, I start with the heel of the tool then I pull back the sliding device just until the bevel adjusts to the grindstone.
Step 4:  Adjustment of the bevel on the side of the tool. I pivot the grindstone and check to make sure that the bevel is adjusting itself on the grindstone, and here it has not adjusted, so I change the incline  and start over with Step 3. Changing the incline requires a new bevel adjustment.
With marker N°2.
With marker N°3 (it's good).
With marker N°5 (to see the difference).
Once the correct adjustment is located, I mark the incline number on the tools for future grinding.

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Making a grinding jig for the 'Ellsworth' bowl gouge
The steel rod is welded at 45°onto the tube and is threaded to hold the concrete-reinforcing iron as shown. Various lengths can be tested in order to change the grinding profile.	Sharpening test with a mild steel rod.
Grinding angles for bowl gouge. 'Ellsworth' profile normal profile

View here the step by step turning of a bowl with an "Ellsworth" gouge

Modification of the grinder
A new "comfortable" tool rest	Diamond wheel dresser jig