ygmir wrote: ↑
Sat Oct 17, 2020 5:16 am
Canoe wrote: ↑
Fri Oct 16, 2020 10:11 pm
... Does a better job than .5 u honing compound. Crazy fast too. AUTOSOL metal paste on a maple block for sharpening and on wood strips like paint stirring sticks for honing. I end up honing my knives one or twice a month, and sharpen them every three years if they need it or not. The bottom of my plane blades are very close to mirrors (i.e., very flat), as are the meeting bevels. Precision of one plane meeting another. ...
sharpening is a skill I have in small amounts. I'd like to know it better. None of my stone working tools require the precision, but as I do more wood working (I have a Woodmizer sawmill, and make custom stuff at times), I see the advantages.
Getting sharp is pretty straight forward. It's the intersection of one plane meeting another. The flatter they are, the sharper their intersection is. Choosing the angle to meet is another thing to know. Different angles for different tools/purposes.
For a plane:
- make the bottom flat (like Japanese chisels, some are hollowed so you're only working the edges & blade section),
- then mirror for super flat,
- then make the blade bottom flat, then mirror flat,
- then make your bevel mirror/flat,
- then your secondary bevel is a much smaller area on the bevel, again super mirror/flat.
Rehone the secondary bevel (and occasionally also the blade bottom) and you're super sharp again. One minute tops. IF you're using AUTOSOL Metal Polish on a nice flat block of hardwood.
- As you get the blade better, you make the block flatter, and then in turn get better results.
- Don't use too much AUTOSOL, or the blade will float up on it and the corners of the blade will dip down instead of the blade staying flat on the wood block.
AUTOSOL is super fast to polish. Try some of that instead of your honing compound. If you polish too far, you can always dull it down some with cotton.
I've gone to hand tools over machine tools for so many tasks. Better control, no noise, less mess, no dust to breath in. Sometimes longer, sometimes faster. Wood: planed surface over a sanded surface. Faster, much nicer looking too.
Example: Plywood table tops with an added oak edge. Guy was sanding the edges down to match the top, taking 20 to 30 minutes per table, noisy dusty. Using a hand-scraper in a holder, two minutes per table, plus a two minute resharpening. Cleanup: shavings instead of sanding dust.