Dual head hollow grinders

kerrystagmer

kerrystagmer

Joined
Sep 6, 2006
Messages
103
Does anyone here have an idea what companies made dual head hollow grinders? I havent seen one in years since visiting the old Carvel Hall plant on the eastern shore of Maryland.

I'm interesting in hunting one down for a specific job.

I've considered the ones guys are making now with a pair of contact wheels, but I cant even remember who makes them!

Ideas?

Kerry Stagmer
www.baltimoreknife.com
 
for those that know would also like to know where your from so they might be able to help you find it locally or within driving distance.
 
Kerry, John Greco was using some (that he made) in his Mississippi shop. He's now in Kentucky, but I would assume uses the same equipment. Maybe he would be willing to supply plans or make one for you. Who knows? http://www.grecoknives.com/
Good luck.
-Mark
 
Leaf through a copy of Blade magazine. I believe there is something like you want advertised in every issue.
 
Heya Kerry! Long time no see!

Try to find out what happened to all of the gear from Camilus Cutlery in NY, I bet they had something, and I know how good you are at sniffing out unused tools :) If nothing else, if you have some contact wheel of the diameter you need I bet we could come up with something in a day or two. I'm always up for a little Junkyard Wars action :)

-d
 
quite frankly I've done the junk yard thing to test the application. I have a spare pair of 2 by 60 contact wheel grinders (2 hp each) we arent using in the shop and have run them backwards facing each other.

It does work well, and I know I could build them into a single machine. It is an option.

The old style have a long arm that resiprocates while the operator brings the wheels closer together. It also has a cam the shape of the blade so it will grind to form on a shaped blank. This would be a complex thing to build right , certain a possiblity, but im willing to spend some $$ to save some time.

Kerry Stagmer
www.baltimoreknife.com

www.fireandbrimstone.com

.
 
Kerry, there was somebody here in Alabama that was making one that used two 2" x 72" belts. I think I still have the contact info in my shop someplace. I'll go out this afternoon and see if I can find it for you.
 
The simplest way (and maybe cheapest) is to get two identical belt grinders (KMG's ?) and mount them facing each other. Power them to run the belt upward and you have a two belt hollow grinder. If they are mounted on a sliding channel they can be made to move in and out while maintaining their alignment. Two KMG's would be great, but two cheaper units would work. Using them this way, you can change the hollow grind height by changing the contact wheels. The units could be removed from this sliding table assembly and used as two bench units when not on the sliding table. Just put a forward/reverse switch on the motors. You get a double head hollow grinder and two KMG's for a couple of grand . It is a win-win situation. Best part is when you are done with this idea ( It doesn't seem practical for anything but a production setup) you still have two KMG's. I bet Rob would build one as a left hand unit so they would really mate perfectly. If you have the shop capability, you could build two KMG clones, one left hand and one right hand, with the sliding mounts built into the bases. Heck, you could mount them on a hinged base that swings open to make two side-by-side grinders, and closes to make the hollow grinder. Ideas- Ideas-Ideas.
Stacy
 
Kerry, I tore my desk apart in the shop and can't find it. I'll look in a few other places. Sorry about that.
 
Thanks Bobby, that's the one I was hunting for Kerry. I freehand grind. I can get in enough trouble with one grinder. I don't need two at once.
 
These guys were at The Blade Show years ago, but I never saw them again. This one seemed a little safer.
 

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Thank you for that. Safety was the first thing I thought of also. If it works as well as advertised its too bad it doesn't have an attatched bed. I'm going to need it. My wife will put me on the couch when I break the news to her that I want one. :D

I'd love to at least see a video clip of this thing in action. Stills are great but a video clip would sell that machine. Anyone got any clips or videos on one in use?

STR
 
Bobby Branton said:
These guys were at The Blade Show years ago, but I never saw them again. This one seemed a little safer.
Click to expand...

Yea thats the guys I was thinking of for something modern, but hte machine was simply not powerful enough IMO.

We have 3 bader space savers for standard work plus several other built ones, plus a couple 2hp sunstrands. Personally I think 2hp is a bare minimum for grinding and that unit was quite underpowered. It did work just fine, just didnt hog material like I'd need it to

I wish I knew who the maker of the machine at Carvel Hall Cutlery was, I bet they were from the 1920's or so.

Kerry Stagmer
www.baltimoreknife.com

www.fireandbrimstone.com
 
Greetings,
This post kept taunting me up most of last night and even today.

Why not purchase two of these (this has nothing to do with promoting this grinder) grinders and install them contact wheel to contact wheel. Hollow grind bottom up, with the sparks heading downward. Would this work?

http://suremak.com/grinder.html

Dennis
 
Ray Beers, the well known knifemaker from Monkton, MD, had a double hollow grinder setup back in the 80's. I don't know if he is retired or not nowadays, but he is still listed in Knives 2007. Perhaps you could contact him and he could give you some pointers.
 
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