Wooden dado plane build question

Re: Wooden dado plane build question

Dean J in MN

>Jake --

The knickers on a dado plane are as you described, wedged into the body like the blade. Most of my dados have it at a ~ 90 degree angle, but I have one that has it set leaning a bit forward. Makes no difference in use that I can see.

The knicker blade looks like a regular blade (without a bevel) with the center filed lower than the edges, forming a knife edge on both sides the width of the main blade. Like: ^_^ (bad ascii art there). The bevel is only on the insides, like a spur on an auger bit.

Wish I had a photo handy, reading that description is not helping...

-Dean

Re: Wooden dado plane build question

Jack Guzman

>Here's a sketch I made for Jim Reed when I had him make me one for a 3/4" dado.---Jack

Re: Wooden dado plane more build question

Jake J. (Windsor, Ontario)

>Believe it or not, I did understand your ASCII art there Dean. And Jack confirms what you wrote.

Now, what sort of skew is the blade set at and is it beveled on three sides? (I'm thinking of modifying a blade from a rabbet plane).

I'll assume that its bedded at 45 degrees like a bench plane (but compound with the skew) and around 10 inches long. Are these good assumptions? Not sure about a depth stop at this point, but I'll keep searching for pictures of wooden dado planes to help out.

Knight toolworks

Jim in Burlington On

>Steve has some excellent pictures on his site. There also a style that is not wedged that simply sits into a very small dovetail about 3/16" wide.

That`s what mine look like too.

Bob Hackett(Mainely,Bob)

>

Re: Wooden dado plane more build question *LINK*

Wolfgang Jordan

>Here are pictures of my dado plane. The construction seems pretty simple, and the blade is not skewed. It's just not necessary, because the bottom of a dado will not be visible.

Wolfgang


Continental dado plane

Re: Wooden dado plane build question

Derek Cohen (in Perth Australia)

>Hi Jake

This is the nicker for the dovetail plane I recently made. As you can see, it is morticed into the side of the body and lies flush so that the depth stop moves freely above it. The steel was a piece off a ex-3/8" chisel, split at the top (with chamfered inner edges) to slide on a screw. The business end is curved, rather than pointed, so it slices on edge. It works rather well.

Regards from Perth

Derek

Re: Wooden dado plane more build question

Jake J. (Windsor, Ontario)

>Thanks for detailed pictures, they help a lot. I'm glad to see a model without the skew; it greatly simplifies things for me.

Books that will get you there

Bob Hackett(Mainely,Bob)

>Dunbar`s Restoring,Turning& Using Classic Woodworking Tools(ISBN 0-8069-6670-X) has pics of both the plane and the irons and is just a great reference for putting old tools back to work.

John M. Whelan`s Making Traditional Wooden Planes(ISBN 1-879335-69-7) by Astragal Press will be of more help if you want to build this or a host of other specialized planes.It has in depth drawings and contruction tips.

Mainely,Bob

Re: Wooden dado plane more build question

Dean J in MN

>Don't dismiss the skew. In use I find it isn't there to make the dado smooth, rather it is there to pull the plane against the batten that I have on the board in which I'm cutting the dado.

-Dean

Re: Books that will get you there

Jake J. (Windsor, Ontario)

>Thanks Bob, those seem like valuable books. Now all I have to do is cost effectively source them on this side of the border (Shipping things from the U.S. can be troublesome).

Re: Wooden dado plane build question

ThomD

>Here is one with two knives. They self wedge in the slots, which have a bit of dovetail to them. Normally I would imagine this would be a scarry assembly, but the side irons would just be little bits of scrap, and one could take a a few passes at them on the grinder to get the right angles. Also, unlike most japanese planes where projection is critical, it really isn't hyper critical, so a lot of the pressure is off. I think this could be the easiest way, and it does work great.