+- The BESS Exchange is sponsored by Edge On Up (http://bessex.com/forum)
+-- Forum: BESS Forums (http://bessex.com/forum/forumdisplay.php?fid=1)
+--- Forum: All About Edges (http://bessex.com/forum/forumdisplay.php?fid=21)
+--- Thread: Old sharpening methods... (/showthread.php?tid=280)
RE: Old sharpening methods... - Ken S - 03-27-2018
Mike,
Great name for a project!!! Very fitting.
Incidentally, I had a conversation with a Norton rep several years ago. Norton makes the 3X series of grinding wheels in six and eight inch diameters. They cut very well. I was curious to know if Norton would make them in ten inch diameter (actually 250mm, just a hair under ten inches). Yes, Norton will make custom size grinding wheels!
The only constraint is the five hundred wheel minmum order. 
The original Tormek grinding wheels were natural stone quarried on a local Swedish island. They were finer grit than the aluminum oxide SG (superGrind) stones which replaced them.
As a practical matter, I wonder how much different the grind would be on a larger wheel compared to the 250mm (10”) Tormek wheel. The slow turning wet wheel feels natural, although I would also like the physical connection of foot pedals. I do not feel that connection with a high speed dry grinder.
Ken
RE: Old sharpening methods... - grepper - 03-27-2018
Mr. Ken queried, “I wonder how much different the grind would be on a larger wheel compared to the 250mm (10”) Tormek wheel.”
Well, it would have a shallower hollow grind. If the diameter of the wheel was known you could calculate the difference.
RE: Old sharpening methods... - Ken S - 03-28-2018
A scientific type like Mr. Grepper would calculate the hollow grind difference. Being scientifically challenged, I would look at chisel bevels sharpened by the two wheels. If there was not ab obvious difference, I would not be concerned with it. I have trouble seeing much difference betweemn eight and ten inch wheels for amount of hollow grind. Both seem almost flat to me. I would think a larger wheel would be almoster flat.
Ken
RE: Old sharpening methods... - Edgepal - 03-29-2018
Projekt Thomas...
A hollow edge can go deeper then wanted becuse it stands on two points, the cutting edge abd yhe baxk edge. A flat edge stands on the complete edge and pressed down it cannot go up or down in wood.
It is common in some wood working old cultures that have a singel edge knife becouse the flat side of the blade can be used as a plain along for example a log. The flat side stear the cutting edge to go straight forward, the edge-side press the flat side down against the logg.
When building logg houses you make locking corners. Each logg end in the corner are locked in place. There is many ways to make this lock. Some lock are simple, some are very advanced. The advanced are invented to stop drag (?) (stop unwanted air to come in to the house).
A normal size of fire are around 2,5 kilo wood burning. The heat from this size fire evaluate 500 Cubic meter of hit air ut from the room (house) together with the smoke,mthe evaluation can be thru a hole in the roof or thru a chimney. Only 5% of the stored energy innthe burning wood can be used for heating the room.
When 500 CM executed - 500 CM fresh air fromnthe outside sucks in to the room. We name this "drag" i think you guys say "draft"?
This draft is the reason that your backside is cold when you sit by a fire becouse the fire drags air in to it self. So, when building a log house, you get draft from the walls and corners. To stop this draft you use clay and Hey between the logs - and that is also possible to do in the corners - but muxh more difficult. That is why some houses are builders with airlocking corners.
A tepee works innthe same way - and its fire is also around 2,5 kilo burning wood. A tepee has two layer of huds, they have a inner wall that is adound 1-1,2 meters high. when the fire is burning it evaluate 500 CM hit air together with the smoke = a vacum is building up inside ghe tepee. Nature sont like vacum so nature allways fill vacum up with fresh air, in this case fromnthe outside - andryge fresh air drags in between the walls (cold air) and it "falls down" against the fireplace, over the head if the people sitting around the fire = they will not get cold backsides
I lived many years in a Sami kåta (Hogan) with open fire in the middle if the floor. A kåta works as a tepee with 500 CM air circulating - but we sit only in two sides of the fire. The third side have door and on the forth side is the kitchen (uppersit side from the door.
From the door there goes two logs to the fireplace, one on each side. On both aide if the door there is two holes for incomming frech air - and a third hole behind the kitchen. The cold outisde air flotes between the two logs to the fire,mthe third hole behind the kitchen hold the food cool and give the dire fresh air.
So, fire in rooms ans houses are a "ingine" that hild 500 CM circulating in the room/house. By steering the incomming air in different ways humans create warm places without any draft abd they have a comfortble home to live in
Thomas
RE: Old sharpening methods... - Mike Brubacher - 04-04-2018
Project Thomas has hit a bump in a Kansas road. I hadn't realized that my sister-in-law had incorporated my most complete treadle grinding wheel into her most recent landscape architectural endeavors.
[attachment=597]
This represents a political conundrum of gigantic proportion. On the one hand, she's a fantastic pie maker, bread baker and cook and my chair finds itself pulled up to her table frequently when I'm in Kansas. She sewed the draperies for the windows of my Kansas abode. When I write for trade publications she edits my sentence structure and grammar. I have to weigh all these personal considerations against the interests of the members of the BESS Exchange. Hmmm...I think that I will just build a treadle powered grinder this summer out of 1.5" square steel tubing and a home engineered stone. Add an old steel tractor seat commodious enough for my ample derriere and we'll be pedaling our way to sharper edges in the Tormek fashion.
I know on which side my homemade bread is buttered.
RE: Old sharpening methods... - Ken S - 04-05-2018
Mike,
Gotta keep the home fires burning. Too bad. Your story reminds me of the old practice of using historical glass photographic negatives as greenhouse glass, another travesty.
Too bad that the factories which mass produce the cutesy antique restaurant decorating pieces don't make "antique" grinding wheels.
On a practical note, I wonder how a ten inch Tormek wheel would work with a pedal grinder? (Especially if it could be pedalled in either direction.......)
Ken
RE: Old sharpening methods... - Edgepal - 04-05-2018
Happy wife - happy life.
I think that also incloude sisters...
Thomas
RE: Old sharpening methods... - Ken S - 04-05-2018
Words of wisdom from a genuine sage......
Ken
RE: Old sharpening methods... - Mike Brubacher - 04-05-2018
Thanks for the support fellas. It was a tough decision. You're right Thomas, its definitely in my best interest to stay on the sunny side of my sister-in-law. Don't take my word for that, take my brother's. I'll bet that a Tormek wheel would work just fine Ken but somewhere in the back of my mind I'm sensing that a larger diameter with greater mass is going to make this thing work better as a human powered machine. I suppose that our ancestors didn't make these wheels the size they are for no good reason.
RE: Old sharpening methods... - Edgepal - 04-05-2018
http://www.kirunaslipen.com/350%20450%20ss%20basic%20Lastvägen%2011.pdf
This is a very nice sharpening tool with a big wheel