Surface grinder won't reach piece?

Burchtree

Burchtree

KnifeMaker & Moderator
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I got the Boyer Schultz surface grinder wired up this weekend and was excited to play around on it. Unfortunately, then I put a piece of 3/16 steel on the magnet (Walker Geramey), it didn't quite reach. It'll work on a 1/4 piece but nothing thinner. Do I need to purchase a new (taller) magnet, or is there a way to shim these things up somehow?

Thanks --
 
Sounds like somebody put a magnet designed for another machine onto the one you bought. Either that or the grinding wheel you have mounted is too small.

Find out what size wheel you can use on your mahine and buy a new one if the one you have is too small or worn down.

Be sure and true up the new stone and then balance it on a balance apparatus.

If that doesnt work you can either buy a new magnet or design a holder to raise the one you have.... making a really flat holder without a surface grinder will be tough however. After you're done you'll have to regrind the surface of your magnetic chuck square with the wheel anyway.

If your chuck is not fine polled you might as well get a fine polled chuck that fits your machine.

If you don't have a demagnitizer you might as well buy one now and get it over with too. Having your blades magnetic is a disaster for folders as then every little piece of steel dust will be drawn into the pivot of your knife and make your life - and that of the person who buys the knife - into a living Hell.
 
Hmmm ... . I also have no wrench to get the wheel off (7-inch wheel) -- any idea where to get one for an older boyer schultz 612? Also, what is the rate of wear on a wheel and what hardness is preferable for knife applications?

Thanks again --
 
You can get the wrench from Enco or MSC.

Your machine uses a 7" wheel.

Norton 46 grit Sc blue wheel.
 
you want the Norton Ceramic wheels...get a 46K wheel grit to start...

Does your machine have a guard?? Some 7" machines will take a 8" wheel(Mine will) and some dont have a guard at all..if thats the case just use a larger wheel...

We are assuming your wheel is not worn down to a 4" nub, and you have a new one on there...it should go down all the way..a new magnet can run you 800 or more bux...

go here for the wheel u want:

all 7" x 1/2" wide

60 Grit K wheel (Slightly harder than J wheel, better and holds dress longer)

http://www1.mscdirect.com/CGI/NNSRIT?PMAKA=88134168&PMCTLG=00


46 grit K wheel

http://www1.mscdirect.com/CGI/NNSRIT?PMAKA=88134135&PMCTLG=00


Wrench you need:

http://www.wmsopko.com/catalog.php3?pagelist=81

Just pick the one that fits..:)


these wheels I spec'd are "Made in USA" and not NORTON...they are the same for at least 20 bux less each...they are Carborundum wheels, not come unlabeled china junk....:)
 
Thanks -- here is a (poor) pic of the guarded wheel sitting as far down as it will go:


surfacegrinderwheel.jpg
 
Hey Burch, is that one of the machines we looked at awhile back? I would unbolt the chuck and put a 1/2'' piece of precision ground plate under it.
 
Also Burch, I've been surface grinding knife steel for over 10 years and this wheel works best for me. Norton 32A46-GVBEP (7X1/2). I get them from MSC. I run them dry and this one cuts cooler than most with little or no warping and I get one to two years out of one.
 
sunfishman said:
Hey Burch, is that one of the machines we looked at awhile back? I would unbolt the chuck and put a 1/2'' piece of precision ground plate under it.
Click to expand...

you can use your surface grinder to make it.:thumbup:

(I sent you a pm)
 
sunfishman said:
Also Burch, I've been surface grinding knife steel for over 10 years and this wheel works best for me. Norton 32A46-GVBEP (7X1/2). I get them from MSC. I run them dry and this one cuts cooler than most with little or no warping and I get one to two years out of one.
Click to expand...

I couldn't find that one on the website, but I'm going to check the big book when I get home. Thanks!
 
If you decide to put a steel plate under the chuck, it can be mild steel...
No sense in putting tool steel there...
If you've got flat aluminum, it would work...
 
Burchtree said:
Thanks -- here is a (poor) pic of the guarded wheel sitting as far down as it will go:


surfacegrinderwheel.jpg
Click to expand...

Whatever you do, don't get rid of that chuck. It's a fine pole chuck, expensive and just what you need.

You may be able to use 8" wheels, that would solve your problem.

Otherwise, as others have suggested, shim the chuck up with a flat plate.
 
Look around the back of the column. Raise the covers up and you'll find something near the bottom of the cavity that is keeping your spindle from lowering all the way.

Then send me $500 for solving your dilemna.:D
 
Don took the words right out of my mouth...

Check the counterweight if you've got one...
 
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