Hello Jarrod to grind a full hollow would use 2 wheels and its the same at tiers issars and for most semi industrial like ertan suer and others , 1 one big wheel will grind out the edge and the small wheel will grind the extra hollow then come back down to grind the flat portion of the full hollow, the only person i know that uses more than 2 wheels is mastro livi who uses 4 or 5 different wheels.
which part of the video r u referring to? r u referring to hollow grind area or bevel zone? the old TI director, retired quite some yrs now, told me they used 3 steps for their bevel/edge; the two slate discs cut in the bevel, then they used the 3x12" slate stone to make it toothy and less concave, then a pasted strop progression which made the bevel convex at the tip but still concave as a whole. This was ~14yrs ago. Dunno how they do it now. Wacker at their cottage, this was 7yrs ago, definitely had quite a few different diameter wheels for hollow grinding, I'd say from eyeing them about 90mm the biggest and 50mm the smallest.
@@thesuperiorshave yes he uses different wheels for grinding different hollows on different grind sizes for exemple 150mm wheel =1/4 hollow on a 7/8 grind but a 100 mm wheel =1/4 hollow on a 5/8 grind same as a 50mm wheel= à full hollow grind on a 7/8 or 8/8 but equals a half hollow grind on a 5/8 and 6/8 .. That’s why we keep many different wheels, i myself have more than 20 wheels lying in my shop but we only ever use 2 on 1 razor, there’s no need for more, 1 wheel grinds the edge and 1 wheel grinds the hollow, the wheel that grinds the hollow will be grinding the flat portion of the full hollow. I’m not talking about the edge though that’s your expertise 😉
@riverrazors7915 in the 1846 German grinding book, it says the best razors from Sheffield had 5 to 7 different effective diameters for the hollow grind, they say how to carve small circles from paper to hold up to the razor to determine how many wheels were used. It is in the later pages in the razors chapter. That is obviously a few decades before the hollow grinding machine. So I guess Livi is doing the old way, like when they didn't have the hollow grinding 2x wheels machine?
@@thesuperiorshave you can use many wheels to grind a full hollow but its much faster once you’ve set the edge to come with a small wheel and finish the grind, the South African maker i talked to you about only uses one wheel, a 39mm wheel to grind all his razors.
@@riverrazors7915 so to achieve the compound-diameter form we see present in the hollow grinds, you can use one smaller wheel, and vary how close the spine of the razor is to the wheel?
I opened it, honed it, stropped it, and shaved with it all in this one video. Only two coticules were used, in two effective shapes of the stones. I've shaved with it multiple times in this form and it is amazing. I believe in making the bevels concave by the use of a wheel-shaped hone, so if you call that setting up the bevel, so be it. I do not believe in "set the bevel" the way you read in endless shaving forums; they are espousing to completely remove all incumbent bevel and replace those marks, all on flat whetstones. I feel that is a grave error. To me, setting up the bevel = removing enough of the bevel's shape with convex stones so that the vast majority of the bevel is quite concave and thus will not present any physical obstruction toward the final stone's contact. First step, with the La Veinette bout stone-in-hand, was shaped 6.5'Ø vs the spine-to-edge line. Then the bigger La Grise bout, I first used it the same way (6.5'Ø) as the previous step, then @ ~13:20 I faced ~90° to that axis on the stone with the razor (= 25'Ø effect, thus that work immediately occurs 'ahead of' - meaning away from the spine - on the bevel vs the prior stone's work using a 6.5'Ø)
