Well, one can never have too many. For specialized box scrapers, I don't use the square tipped ones. Mostly I found the square corner in the bottoms too difficult to do. My preference is a radius edge, and I will use a small carbide tipped scraper (the Eliminator) which is at a 45 degree shear angle. For bowls, I prefer the swept back to the left side scrapers, which used to be called inside scrapers from the time BC (before chucks) when you screwed the bowl to a face plate and turned it without reversing. AC, I use it both inside and outside for heavy roughing. I use it on the outside for shear scraping, and drop the handle way down, and shear scrape with the wing, not the nose. I never try to do finish cuts with the scraper flat on the tool rest. I just get much better results if I shear cut. On the inside, for shear scraping, I use one with a ) nose profile. Drop the handle a bit, which makes it impossible to get high sided and catch (same thing happens with a skew if you work too high on it), and do pull cuts. I don't use the scrapers flat to clean up the bottom or the transition. I shear scrape, or get it with the gouge. A round nose is good for all of the above if you only have one. A negative rake scraper is a good tool to have. I have found it to be most useful for end grain on boxes. I get mixed results on bowls though, and harder woods will cut cleaner with them than softer woods, and again, the shear scraping seems to work better for me. I do use a skew with a convex grind when I am doing threaded boxes so get the male part dead parallel to the sides and ways of the lathe. I use a more square ended one for the female part, and the side is angled back a bit to compensate for the curve of the box side. I see no need for any scraper over 1 1/4 inch wide and 3/8 thick. Just too much steel hanging out for the potential to get too much steel into the wood at one time. I can stall my Beauty with a 1 inch wide scraper. I am on the Brute Squad though... Oh, mine are all ground to about 70 degrees, and use the burr from the CBN wheel. Carl's video must be older. He is using the Woodcraft Green River diamond grinding wheel, which they haven't made in a while. I would expect as good of a burr from it as I get from my CBN wheels.
robo hippy
