How to Camber a Hand Plane Blade with a Grinder

Рет қаралды 7,061

Күн бұрын

In this video, I demonstrate using a high speed grinder to camber the cutting edge of a jack plane blade (I'll discuss another method in a separate video). I also discuss how much camber I use on this blade, and how I go about marking the camber on the blade before grinding. The method I use for marking the amount of camber works for any iron width or bed angle, even if you don't know what the bed angle is (like for an old wooden plane), because there's no math involved.

Пікірлер: 23

@MrSbenn69 5 жыл бұрын

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,

@rjamsbury1 5 жыл бұрын

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.

@markharris5771 5 жыл бұрын

Now I know why my scrub plan isn’t too efficient, my entire camber is ground perpendicular to the wheel. Thank you.

@chrisherald2338 5 жыл бұрын

Very helpful and informative.

@johnfoster6714 4 жыл бұрын

I like the way the wheel dresser just fades from view at the 10:52 mark !

@BobRozaieskiFineWoodworking 4 жыл бұрын

John Foster It doesn’t fade away, it magically transforms into a couple of clamps 😂

@joshuachen7001 5 жыл бұрын

Very helpful

@JamesSmith-su3oz 5 жыл бұрын

Bob, I now have a better understanding of how grind a camber, thank you. What is the angel of the tool rest on your grinder?

@BobRozaieskiFineWoodworking 5 жыл бұрын

James Smith I’m grinding the bevel at about 30 degrees here.

@dimitrym9451 5 жыл бұрын

Thank you, Bob! Will there be a continuation of the topic?

@BobRozaieskiFineWoodworking 5 жыл бұрын

Дмитрий Макогоненко Yes, there will be. I’ve just been swamped with other priorities. But I will get around to part 2.

@bluetunatiger1 5 жыл бұрын

Bob, Great vid. What is the tool rest you are using?

@BobRozaieskiFineWoodworking 5 жыл бұрын

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.

@2tall54 5 жыл бұрын

Is the only difference between your jack plane and tri-plane the camber you have on the blade? They seem to be identical otherwise.

@BobRozaieskiFineWoodworking 5 жыл бұрын

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.

@2tall54 5 жыл бұрын

Thank you for the quick reply! Looking forward to your next video on cambering by hand.

@jmc0369 2 жыл бұрын

Great tool rest! Homemade?

@BobRozaieskiFineWoodworking 2 жыл бұрын

No, it was from Grizzly.

@bmalovic 5 жыл бұрын

Why not just scribe 1/32" *1.41 (1/sin of bed angle) from the edge? Efectivly this is what you doing if bed is at 45.

@BobRozaieskiFineWoodworking 5 жыл бұрын

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.

@bmalovic 5 жыл бұрын

@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

@matzwoodland1665 5 жыл бұрын

I am First yes !!!!

@benconstruct 6 ай бұрын

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