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Started by Ken S, September 13, 2023, 08:15:40 PM
Quote from: JohnHancock on September 15, 2023, 12:41:08 AMOne thing I have discovered over my life is that sharpening is simple yet complicated. Sometimes over complicated. If you want sharp all you need is two flat surfaces meeting at a line. However, when you throw in grit, abrasives, the behaviour of your sharpening grains, the behaviour of the material being sharpened, the geometry of the edge it can escalate quickly. My observation is that we can overcomplicate and overthink. Sure the science is interesting and can feed into practice to improve our technique but when you look at professional sharpeners such as knife sharpening businesses or professional woodworkers they want in and out in the quickest time whilst getting good results. Example. I bought a jointer plane Wednesday and the iron was non too smart. The edge was chipped and the bevel was not a bevel. It took me 15 minutes for a perfect edge. Ten minutes on the DC to re-establish the bevel, 30 seconds on the DF to remove the old scratches then 30 seconds on the DE to polish. Finally about 30 seconds to a minute to hone to remove the burr. It then took perfect shavings. It will take less than 5 minutes to re-sharpen and that I think is the point. I use the Tormek (and I have wanted one for a long time) to quickly re-establish sharp without any faffing around. I now have that. It took some time to establish my process and I am yet to become as confortable with the drill jig and the turning tool kit (I need more practice there) but chisels plane blades an knives are now a cinch, super easy, barely an inconvenience.
Quote from: Thy Will Be Done on September 15, 2023, 03:27:41 AMIn short, the type of minutia we are discussing only becomes relevant when you are chasing an ideal edge.
Quote from: JohnHancock on September 15, 2023, 04:09:47 AMQuote from: Thy Will Be Done on September 15, 2023, 03:27:41 AMIn short, the type of minutia we are discussing only becomes relevant when you are chasing an ideal edge.Pretty much. Sure edge retention - again it depends. Some blades such as scissors and to a certain extend vegetable knives require a level of tooth to function as intended. Whilst other edges such as on a scrub plane can be left at coarse and function perfectly well. (Scrub planes are all brute force and ignorance and the say in the classics.)In the case of say paring chisels you want a nice keen edge and that warrants more attention to detail and so you would probably spend more time chasing a better edge. So yes it all depends. I am a hobbyist but I end up sharpening for friends and family as well. But for me it is the speed and function of the system. I don't see sharpening as an end in itself. For me it is in order to get more pleasure out of the making functional objects or producing functional tools rather than the actual process of sharpening. It is almost amusing to see how slowly the stone can cut when it is used with light contact pressures and not resurfaced properly once you recut the surface for comparison.Certainly, edge retention is important but if I spend an extra 15 minutes per tool only to get an extra 5 minutes of use there is not much point. So for me it is a trade off and it boils down to a time/result equation. Getting back to the original question, this is where the science cones in. It will inform my approach to sharpening to get the the most out of my sharpening system with as little expenditure as practical.This is not to decry those for whom the experience of sharpening is an end in itself. I see the joy in refining an edge to get the lowest BESS score and the prettiest edge. However my needs are more pragmatic.
Quote from: Ken S on September 17, 2023, 12:22:31 PMI have noticed that increasingly YouTube channels I liked for good information are becoming more like infomercials. I find this trend at least as disturbing as lack of facts, especially when the sales pitch is based on questionable information.
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