Excellent concept of projection to quantify the camber Bob. Thanks as ever for your wisdom. I like the use of the phone camera for a second closed up viewpoint too.
Hi Bob, thanks for sharing, one of the most informative videos on grinding I’ve seen in a while. They can be quite scary to use but the best way to get better is practice... Thanks,
Paul lindhag Camber and length. The jack plane is usually between 15-18” long (mine is 17” I think) with more camber while the try plane is typically about 22-26” long with less camber.
bluetunatiger1 I got it from Grizzly years ago. I think it was an add on for one of their wet grinders. It’s not worth the money. The handles broke so I have to tighten them with a hex key. And it flexes too much. It will soon be replaced with the Veritas.
You certainly can if you want to. I find it easier to avoid the math, extend the blade however far you want, and mark it directly. Not all planes are bedded at 45 degrees. Especially older wooden planes and low angle bevel up planes. This method works the same regardless of bed angle and without any math.
@Bob Rozaieski Fine Woodworking Of course, if bed angle is 50 then you wil calculate 1/sin (50) Math is not so scary :). But.. as you say. Everyone has his prefered method, just my 2 cents
This could make a lot of difference to many things, but because you don’t have an accurate way of establishing the camber we can see, this vid does not do it for me. The new breakthrough in plane sharpening will come when someone gets hold of a metalogist & a machinist (along with a Chippy)to solve this and several other issues Pretty sure in this day & age that the facilities are there to solve this, but we must apply the science- it’s nearly 50 years since the university of Japan produced their game changing video of the relationship of a chip breaker & a hand plane blade. & they expect us to believe someone landed on the moo n
