Uhhh. Not sure if I got a good deal or not.

M

mpj13

Joined
Oct 5, 2001
Messages
108
I just bid on a Precision Instrument 6-Inch Bench Grinder (Brand New)
I am not totaly sure if I got it yet but I am paying $22 + $10 shipping, does this sound like a good deal? Man, bidding kind of stinks, you think wow this is a great deal but when you realize you will win you start to worry. Will disk grinders work foe knives or do you have to have some kind of belt grinder?
 
I have used my disc grinder to clean up and profile blades and handle material after sawing out the rough shape. They are not very useful for anything else. You need a belt grinder to do it right. You can use files as some folks would argue, but if cavemen had had belt grinders they would have used them!:D

To get a better idea of how to grind a blade check out some videos. There is a really good one by Jim Hrsilous (that I have not spelled right) on forging damascus and it is absolutely first rate. Also, an exforum member, Alan Blade, has put out some really good videos on grinding and heat treating. Use the search on the forums for Alan Blade and you should be able to find a thread with his email address.
 
I'm going to have to disagree with Peter about the disc grinder. I recently purchased a grinder with a 9" disc and it works fine for grinding the bevels, but you are limited to flat and convex grinds, no hollow grinding. Rob Frink makes a disc with a beveled face that is at the top of my list of needful things.:)
 
Fellas, I think he's talking about grining on a wheel. In which case I should also like to know if it would do well for a hollow grind.
 
Thanks for the advice. Another thing I am worried about is, is $22 + $10 shipping a good price for a new 6" grinder?

I guess I could buy the belt grinder attachment from Koval knives, that would be nice.

I think the brand is Precision Instrument. I just don't want to get ripped off. You know, with a little imagination I'm sure I could rig some kind of belt up to it, or maybe not.

Edit: Added "sure"
 
I hollow ground some blades on bench grinder wheels when I first got started in knifemaking, I used an old washing machine motor with a 1/2" arbor attachment and a 8" grinding wheel, it did a pretty good job,but you need at least the 8" wheel and a 10" would have been better, also you need a couple wheels in fine grits(which were hard for me to find). You start grinding with the course, but if you don't have the finer wheels, clean up is a b***h. Thank goodness for belt sanders and all the different grit belts, a bench grinder is a handy tool to have in any shop, but I would suggest making a belt sander if your serious about knifemaking, old junk cars have all kinds of high speed fan belt pulleys(that don't cost much at your local junkyard) and with a little ingenuity you can make a belt sander that will do a lot better job than a bench grinder.Just something to think about.

Bill
 
mpj I made my first few knives with files.
My first 4or5 hollow ground blades was
on a hard wheel grinder. I agree witn
Ridhard that you need it get a 9disc
from Rob. Go to -Center Cross Metal Works-
Gene has a video ($20.00?) I think ? he
uses a Grizzly grinder? . He`s a good
man to deal with
 
<< is $22 + $10 shipping a good price for a new 6" grinder? >>

Yes. I don't think you'll find a new grinder that's much cheaper than that. These days even taking the wife and kids to McDonalds can cost $32.
 
John Cooper used a bench grinder.

a 6" grinder probably won't have enough HP to run much of an attachment, make small knives until you make enough money to buy a bigger one:D
 
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