round rotating water stones

Big Red · 08-10-2008, 07:21 PM

all right guys, I have searched here as well as google and not found what I was curious about. ebverybody seems to hone by hand. however i saw in a magazine article years ago a japanese sword maker who used donut shaped stones to sharpen his swords. they rotated and water trickled out onto the stone as it spun. you just hold the blade at proper angle going across the stone.

does anybody haev any idea what I'm talking about? is my brain dead, was this obscure and that's why I find nothing on it? I seem to remember he went to 6000 grit but that the stones were available higher.

thanks.

Red

Kees · 08-10-2008, 07:29 PM

I have seen a similar machine hone microtome blades at Leiden University when I was a medical student.

Chimensch · 08-10-2008, 07:45 PM

Moviemaniac has one. It's called a Shinko machine and here's his video:

YouTube - Honing a straight razor on a Shinko machine

thebigspendur · 08-11-2008, 01:35 AM

The Japan Woodworker sells two honing machines. remember that making a sword is an entirely different process than razor maintenance .

mparker762 · 08-11-2008, 12:33 PM

I was in Sears the other day and noticed that they carry them:

Craftsman 7 in. Blade Sharpener

Chimensch · 08-11-2008, 01:20 PM

Quote:

Originally Posted by mparker762

I was in Sears the other day and noticed that they carry them:

Craftsman 7 in. Blade Sharpener

The link says that this machine has a 1000 grit grinding wheel. Seems to me that it wouldn't be much use for razors without finer grits.

kevint · 08-11-2008, 02:46 PM

I saw one the other day at woodcraft that uses abrasive film on glass.

Makita and others make horizontal machines for sharpening planer knives.

I guess such machines are cool if they help you make a living

Russel Baldridge · 08-11-2008, 03:04 PM

That seems like a lot of unnecessary work/equipment to get a razor touched up.

In all honestly, using a Coticule and a Nakayama, I can refresh a razor in about that much time. Besides, that machine inhibits the the direction in which the steels is abraded, edge leading on one side but trailing on the other. I don't see any advantages.

I suppose it works, so, to each his own, but I wouldn't buy one.

English · 08-11-2008, 04:06 PM

They sell the fancy machine in Germany, here.

DICK GmbH - Feine Werkzeuge zur Holzbearbeitung

You need to hit the British flag for English language and then click on tools at the top of the page and then click on sharpening tools on the left hand side of the page. Look down the page for the machine you have seen.

Goes up to 6000 grit, but I would have thought it was too gutsy for straights which like a light touch.

The grinders look a bit tasty as well.

Maybe better than elbow greece.

Happy hunting.

kevint · 08-11-2008, 05:04 PM

I wish there was a Dick Biz in my home town. I'd love to wander through there. They have lots of cool stuff.

I agree with Russ, it doesn't seem the the ideal razor thing.

Just for fun I'd like to see the tosho using that toy size grinder on a sword. The typical shop photos I've seen were always on a vertical wheel approx. 2' diameter, maybe 8 inch wide for removing clay coat and some initial shaping. But even in "traditional" work there are many ways and different approaches, opinions and evolving processes

Russel Baldridge · 08-11-2008, 06:33 PM

Quote:

Originally Posted by kevint

I wish there was a Dick Biz in my home town. I'd love to wander through there. They have lots of cool stuff.

That's an understatement!

I have to be very careful when looking through their catalog, too many tools that are just superbly crafted and worth every penny I don't have.

randydance062449 · 08-12-2008, 03:30 AM

I have one that is similar but so far I have not had any success with it.

Kees · 08-12-2008, 03:45 AM

The one I saw in Leiden 30 years ago would do all the work. It had a contraption that holds the blade and then you plug it in and the thing will do everything: put the blade on the rotating stone, turn the blade regularly and add water or fluid with sharpening particles.
When you return to it blade is sharp.

A bit like this one: http://websites.labx.com/rankin/deta...utonumber=3062

Don't tell me it is expensive (and this one is 2nd hand!): these are for professional use.

Russel Baldridge · 08-12-2008, 04:21 PM

That'd be very useful for doing production style work, I wonder if the Dovo/TI factories have similar devices.

I would like to watch it in action, while I doubt the results are as good as a hand honed razor (can it do a rolling X?

) I'd be interested to see all the mechisms working and such.

moviemaniac · 08-12-2008, 06:14 PM

Quote:

Originally Posted by Russel Baldridge

That seems like a lot of unnecessary work/equipment to get a razor touched up.

In all honestly, using a Coticule and a Nakayama, I can refresh a razor in about that much time. Besides, that machine inhibits the the direction in which the steels is abraded, edge leading on one side but trailing on the other. I don't see any advantages.

I suppose it works, so, to each his own, but I wouldn't buy one.

The main point is to know which tool to use for what purpose. Of course you are quicker with a coticule/whatever when touching up a razor. But that's NOT the purpose of a machine like that! It works wonders when you have to establish a new bevel on a wedge or a frowning razor. What you do in 1-2 hours manually gets done in a matter of 2-3 minutes. This machine is NOT intended to finish razors but to help when quite some has to be removed. Of course you have to manually hone the razors of the finer hones afterwards.

Since I've got the machine I reckon it has saved me an entire day of manual work on razors that needed serious grinding. And then there's chisels, plane blades, blades from kitchen tools....
But, of course, each to his own.

Russel Baldridge · 08-14-2008, 04:01 AM

I didn't really mean to make it sound useless, it obviously has a place in the workshop of someone that does much more work than I do. If it enables you to work better, and produce better work, than it is most definitely worth it.

Also, I thought it was being used to refresh edges; bevel grinding is much more suitable for a machine, I apologize for the misunderstanding.

But to be fair, I can also do some serious bevel reworking on the DMTs. In approx. 10-20 minutes the DMTs will take an 1/8" chip out of most blades and have the edge ready for finish polishing on the natural stones. The right techniques, when done with care, will really shred metal off of any edged tool with those diamond plates.

If I did more than my own chisels and plane blades I would seriously entertain getting one, for those tools, it seems very much worthwhile.