Home Made Contact Wheels?

There are lots of ways to cut the thing in circles but the most accurate and easy way I found was on the table saw.

Glue up good plywood in squares to the thickness you want. Draw a line from each corner and make an X in the center. Drill the center. Make a jig out of a board and a dowell pin the size of your hole. Sett the fence so glued stock will be a hair larger than the finished size.
Start the saw and saw all four sides, then rotate the piece so your are cutting the corners, roughly 45's, then do 22.5 angles. After you
have nibbled all the edges just push the wheel to the center cutting area of the blade and start spinning it.

After you get a round piece, mount it on the grinder. Spin it and check for round. If any out of round is felt carefully use a wood rasp to correct it.
 
Peter Nap. Hey thanks for that tip on the table saw/ I have a wheel glued up, and have been looking for someone with a nbandsaw to cut it I never thought of the table saw, and I have one of those duuuuh:rolleyes:


On the caster wheels, Wayne Goddard had a series on building grinders in Blade mag he used a couple of casters in some of his machines. Great articles. For $28.00 the 8" grizzly sounds like a deal:D

So how about jacking up the rear end of an 11hp Murray riding mower. lets see I got two belts running at the same time and variable speed plus reverse, hmmm move the headlights so they point down over the drive wheels.........
 
I think the wheels you show here may not be rated for the high speeds neccesary. The rubber may expand and come loose from the hub. Do they have an rpm rating? The grizzly price sounds hard to beat.
 
All you need in addition to the contact wheel and drive wheel is an idler. Use an old idler from a car with a serpentine belt. I got mine from someone here (this forum) who got the idea. Work great and already have the bearing. Just turn the flanges off and round over the edges. Make a tracking device for it and your done.
 
Lmao Mike, I tore an old rider apart and saved the rear end with the tranny and all. It's a belt driven so it would be easy to rig up as a belt grinder drive system. Lmao, knifemaker's minds must never stop thinking up whacky ideas on how to make stuff! What a bunch!
 
>>You can call Grizley and tell them that you need a 8"
>>replacement wheel and they will send you one out for $28.

This solution seem to be the best, but the problem is that Grizly
do not sell in Canada...

Somebody has some to sell to me?

Alain M-D
 
In Wayne Goddards book "The 50 dollar knife shop" he uses a piece of wood equal to a portion of the circumference of a 14 inch wheel and clamps it to his platen. Sounds like a good way to go.now if I could only find the junk pile he uses.
Take Care
TJ
 
I made a felt-coated buffing wheel from birch plywood using a circle cutting jig on my router. The nail hole that the jig uses is your center hole for drilling the arbor hole so everything is very true. And I'm spinning it (10" dia) at 3450 rpm.
Ed
 
Hey Michael, My ho'made grinder hasd a wooden wheel also. leather covered. I think that the best way to true one of these up is to cut a close as you can to round, mount it to its axle where it will run, and using a temporary tool rest and lath tools true it up under power. assuming of course that this is the Powered wheel. If you need to turn another wheel for the idler, use the same size shafting; true up one, remove it, slip in the second wheel in the bearing blocks on its own axle, and true it up.
 
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