Contact wheel only?

R

Randy3000

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Jun 3, 2017
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I am still collecting parts for my grinder. I have 240v in my garage now and have some of the parts for the frame. I was spending a lot of time thinking about the platten assembly, and i just realized that i am not sure it is actually necessary.

I have a 9" disk grinder with 3/4 hp motor that i flatten stuff with. For profiling, basically any contact wheel profiling any thickness knife blank will see less than 0.001" deviation across the profile due to wheel curvature. Typically, the deviation is 0.0001" to 0.0002", assuming the workrest is positioned well.

So if i can flatten scales and whatnot on the disk, shape handles on slack belt, profile on the wheel, and bevel on the wheel, why do i need a platten?
 
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For flat grinds silly. Yes you can do flat grinds on the disk but the disk is SO limited to available abrasives. I could not live without my flat platten. Plus I use it for the stright sections on spines and clips. Yes I love my contact wheel to death but if I had to pick only one or the other I would most likely take the flat platten.
 
Well, you talked me into it. I will keep my 120v grinder that is platten-only around until i get the platten on the new 240v grinder set up. It will be nice to toss the 120v grinder in the landfill, but i will hold off until i get it replaced. I already ordered the contact wheel for the 240v grinder.
 
Personally I could do without a flat platten. I can't do without those contact wheels though!
 
If i didnt have such limited space it wouldnt be a big deal, but i am constantly having to rearrange and move stuff i dont use all the time to the shed, and then the shed gets full and then i have toss, sell, or scrap to make room. It just doesnt end. I got to stop acquiring tools and scrap pieces that i may find a use for "some day". I know a platten isnt really all that big, but think about it, it takes up a lot of drawer space.
 
Hang it on the wall. If you ever want to do flat grinds you will need the platten. If hollow grinds is all your after I wouldn't worry about it. Wheel's are better for profiling, handle shaping, etc anyways.
 
My Pheer has a flat platen between a 8 inch and a 2 inch wheel. All one piece. Loosen one bolt and rotate forward and use the 2 inch wheel, rotate back and use the 8 inch wheel, rotate straight up and down and there's the flat platen. The platen can be used at many different angles too and the system gives ya all kind of slack belt choices. Amazingly simple, amazingly versatile and it works.

Bet ya could build something similar and then ya wouldn't have to worry about space cause you are not swapping parts out.
 
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