I have purchased a nice used scraper for my wood turning. I would like to have a tool which is versatile until I have additional scrapers and I think the grind I have pictured is possibly a good solution; I am looking for suggestions about possible grinds which would give most options. This is heaven for me as I really enjoy the technical aspects of sharpening. I want to be able to make boxes so I thought I could do a grind which I have drawn in the picture. The left side is relieved by 10 degrees to work on the insides of the box. The point is at 90 degrees to the left side of the tool for about 1 mm to allow catch free scraping on inside corners. The curved end portion of the blade can reach the bottoms of boxes and by flipping the tool ( I am using two bevels, negative rake) I can utilise the right hand radius for bowl scraping. I have seen a tool like this designed by a pro turner, slightly different to a normal box scraper. I am not exactly sure of precise geometries regarding shape but I am well aware of the effects of increasing or decreasing negative rake scraper angles; it’s a compromise regarding, edge life, finish, cut aggression and personal preference. So if anyone has any better suggestions for a single grind which can cover a lot of ground please feel free to comment. Any specific measurements of angles regarding the cutaway on the left hand side are welcome, I am imagining ten degrees would be about right. Negative rake allows the tool to be used on both sides; twice the versatility of a standard tool.
Hello Giles,
Would you consider meeting up in the space and helping me with sharpening all of our wood turning gouges?
Most of them are blunt, chipped or half sharpened with ambiguous degrees. After some time I picked up the tools and found myself very baffled by the state of them to a point of really looking for someone who might know a bit better than I do to fool proof me taking the task of sharpening on.
I can buy you a beer when we’re finished at canopy!
nearly all of the lathe tools have a label around the ferrule ot laser cut on them with 3 numbers. these correspond to the sharpening jig for the tormek. one is which number on the jig to use, another is the protrusion length and another is the angle.
there should be a book with the tormek jigs that explains how to get the same profile every time.
I know! I did have the induction and done some sharpening myself, have the book… The thing is the state of them is pretty bad and it needs to be done, but i unfortunately get bored after a few hours of staring at the tormek (lol)
