If it could work that would be great.

M

mpj13

Joined
Oct 5, 2001
Messages
108
Well I am buying a 6" grinder here it is. I would like to take one side and build some kind of pully system and but a small belt on it. Here are some specs...

· Horse power: 3/4
· Free speed: 3450 RPM
· Cycles: 60HZ
· Volts: 110
· Phase: 1
· Wheel size: 6”

I know it may be unorthodox but that is what makes it so fun. I would use this along with hand files to do the job. I know there is a Jet Multitool attachment, but I should be able to do something a little cheaper. Does anyone have any suggestions or ideas for this kind of project? Thanks much.
 
Frankly, I think you'd be better off gettin a bigger grinder or rigging a mandrel with a couple 10" by 2" grinding rocks, one around 60 grit and one around 150 grit. Bob Ogg ground knives on a rig like that for years. I'm thinking about building one for my rough grinding and just using my wilton for finish sanding. One thing tho, even with a small grinder like the one you're getting, buy a good respirator and a full coverage face shield. I attached one to a plastic hard hat for convenience and extra saftey. I hope things work out for you MP! Don't get discouraged!!!
 
Trying to grind with "stone" type wheels is just plain mean, difficult, frustrating and if you want to try to do it get "results" you will find that there are certain types of wheels to do certain jobs just as there are certain types of sand paper. There is a saying- the harder the metal the softer the wheelto be used. I believe the white wheels were the most soft while light grey were next. If at all possible get to a belt sander . You can make knives with a disc sander and do a good job on a lot of the blade. When I tried a regular wood working belt sander by mounting it in a vise I realized that belts were the way to go. I then used a 4" and then a 6" belt sander before going to a 2"x72" machine. Even 4" is too wide but a 1" machine with some power can do a great job. There are some makers that use 1" belts almost exclusively. By the way if you still convinced to use "stone" wheels don't forget the face mask. They are very well made in these times but if on does come apart(which happened to a friend of mine) it could be very dangerous. Just some old things I went through several years ago. Frank.
 
Accualy, I would much rather use some kind of belt instead of a stone wheel. I tried to sharpen my machete one time on a bench grinder, it worked but it looked very rought afterwards. When I bid on the bench grinder I thought I could rig it up with some kind of belt, after I bid I thought about it and it hit me, I have no idea how to make this work, I can't cancle the bid either. I guess next time it is think then bid :D I am looking throught the forums for tutorials on how to convert it, it does have 3/4 HP motor so this is good.
 
Maybe you could mount a couple of cheap discs from Koval on it and use it as a disc grinder. There are quite a few people grinding that way.
 
Originally posted by sattley
Maybe you could mount a couple of cheap discs from Koval on it and use it as a disc grinder. There are quite a few people grinding that way.
Click to expand...

I looked at the discs on Kovol, does anyone sell 6" instead of 8"? Maybe on the bench grinder I could remove the gaurd and mount the disc. This seem like a good alternative if I can't get a belt grinder, I can try the disc. Does a disc majorly limit what you can do as far as shaping a knife? Thanks.
 
If you really want a cheap, but well made, belt grinder you could buy a Delta 4" x 36" for about $110. Has a 6" disc. It's what I use and it seems to work fine so far. Yes, 4" is a bit too wide, but it works. They also make a 1" model for a little less. Don't know if it would work well though.
 
I prefer grinding on a belt, but the bench grinder definitely has its place in the shop.
You could probably remove the gaurd and mount a disc on one side, to use for flat grinding blades. Leave the stone wheel on the other side and use it for rough work and profiling. It will remove alot of material in a tighter radius for profiling. And it can hog off a good bit of steel before you start in with the disc for the flat grind. It will save you money on sanding sheets.
 
I think I will try to buy a disc and put it on one side of the grinder. For know I think this will be okay, I'm just starting out so after awhile I can buy something better, I mean I'm not going to start making Katana's any time soon so this should work for small knives.

It's kind of scary, I love Martial Arts and I love knife and stick fighting, so I allways wanted to experiment with making knives and other weapons I just never knew witch way to go to get started. The scary part is I think I will get hooked and want to make knifes nonstop, at least I hope so. I won't do it for a living, I'll do it for the art of it, to be able to express my own style and imagination, thats what makes this hobby/job so interesting. I'm sure many people here can relate to what I am saying, it's hard to explain. Later

Edit: Typo
 
Does anyone know were I can buy a disc? I looked at Koval knives and it looks fine, I just want to make sure there is not a better deal out there.
 
K&G and others sell a wheel you can put ona grinder that you can put diff, grits of sanding belts on that you buy in rolls. i haven;t use one but i have heard they work and a few people have gotin started with them. anyone out there have one that can chine in on this thread?
 
Originally posted by RHINOKNIVES
K&G and others sell a wheel you can put ona grinder that you can put diff, grits of sanding belts on that you buy in rolls. i haven;t use one but i have heard they work and a few people have gotin started with them. anyone out there have one that can chine in on this thread?
Click to expand...

I went to K&G but I could not find any sales for disc's. Does anyone know of any other places to buy disc's at?

If I have a 6" grinder once I take the guard and wheel of couldn't I throw on a 8" disc grinder? I may have to put blocks under it but I think it would work as long as the shaft fits. Any ideas? Thanks allot.
 
If your going to use a grinder with a bigger disc, just go to the hardware store and buy an arbor extention the same size as your grinder probably 1/2" with the same size shaft as the hole in you disc, then you can leave the guard on your grinder and just change the grinder from a wheel to a disc with a allen wrench in a minute or to, and put your grinder on the edge of your work bench so the disc will hang over the side when its put on and you won't have to raise your grinder, this will give you better access to the disc also.

Have a good one.
Bill
 
Anybody know if you can get 2"x42" belts that are good for knife grinding?
 
I started on a cheap 4x36 and built several knives on it. I still use it for flat planing and handle shaping and it works well. Check out my site. I built a 2x72 for $100 and a 1x30 for free. I have photos on my site. Not everyones cup of tea but then again I don't have some peoples money. Besides building tools is challenging and fun. Cory
 
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You could try one of these from Texas Knifemakers or Koval. They are $150 and attach to your bench grinder. They are called a Multi-Tool.
They also have the belts.

C Wilkins
 
I've seen Cory's grinders, and they're great. This is a man who can use the most unlikely stuff in a most elegant way. :cool: Check out his site, it's inspiring.

CL recommended the Multi Tool, and that seems to me a great way to use your motor. You could also use the opposite shaft for a buffing wheel, but if so be sure to remove it except for when you're polishing, or it'll become contaminated with larger grit particles settling from the air (remember Michael's note about a respirator!).
 
Forum member Rob Frink makes discs that have received a lot of praise around here. Check out his disc with the beveled face. Sorry I don't have his contact info handy, a search here should turn it up for you.:)
 
I saw the tool from Rob, it looks pretty nice. The jet multi tool looks likt it would be a great startup tool. Thanks for the tip on taking a buffing wheel off when not in use, I would not have thought of that right away.

Does anyone know were to buy steel that is about 3"-4" wide? I have checked the main supply sites but most sell upto 1 3/4" wide and thats it. Thanks again.
 
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