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Thread: Flattening stones
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2nd March 2009, 10:03 AM #1
Flattening stones
The best stone I've ever used is my giant Bear Quick sharpening stone. It is much bigger than the ordinary stone sold but it has developed hollows and is not flat at all. Ordinarily I'd toss a stone away and buy another $2 one but this stone has been with me for a few years. What do you reckon would be the quickest way to flatten a big stone like this?
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2nd March 2009, 10:04 AM #2SENIOR MEMBER
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The concrete path out the front of your house.
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2nd March 2009, 10:27 AM #3
G'day Geoff, I have tried the concrete path but it took ages and it didn't make a lot of improvement but mind you I used whatever sand I could find, maybe there's a better way......
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2nd March 2009, 10:44 AM #4
G'day Tiger
What about abrasive paper/mesh stuck to a flat surface like thick float glass. That's what I use for water stones. What's a giant bear?
Cheers
Michael
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2nd March 2009, 11:33 AM #5
G'day Mick.
Should have pointed out that my stone is an oilstone. Bear is the product/brand name.
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2nd March 2009, 03:39 PM #6
Tiger
I hear that the best way to flatten an oil stone is to use an Extra Coarse diamond stone. Of course the diamond stone is going to make this an expensive fix if you need to buy one! But there are those that swear by this method and, in fact, say that they find regular use of the diamond stone improves the cutting of the oil stone.
An alternative might be loose diamond grit on steel or cast iron.
Regards from Perth
DerekVisit www.inthewoodshop.com for tutorials on constructing handtools, handtool reviews, and my trials and tribulations with furniture builds.
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2nd March 2009, 04:14 PM #7Senior Member
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Float glass, EAR MUFFS, clean sand and elbow grease.
(Courtesy the late Les Miller)
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4th March 2009, 10:22 PM #8
Hi Tiger,
I flatten my waterstones on W&D on float glass. My norton oilstones are used for less important sharpening activities, so I apply sand on the smooth concrete floor, apply water and use foot to apply movement to stone. Might not be the best way, but it works well for me.
Cheers,
Tom
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5th March 2009, 10:04 AM #9
For what it's worth I flatten mine on 80 grit wet and dry on a plate of glass with kero as the lubricant.
Cheers
SteveDiscover your Passion and Patience follows.
www.fineboxes.com.au
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16th March 2009, 06:44 PM #10
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20th March 2009, 09:35 PM #11
missed that one prozac, sorry.
I use alumina zirconia from Klingspor to lap stuff. I just came across this link, where he mentions using it to clean stones, oil stones I presume. Might be something in that for you.
Cheers
Michael
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13th April 2009, 02:57 PM #12New Member
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I have been collecting for so long that I have a drawer full of stones. I find them for a couple of dollars every few months. We have so many swapmeets and junk stores where I live. It is tool heaven. You need to flatten them before they get to far out. If I sharpen by hand I shapen my carving tools on the grooved ones. I have hit them on the flat sanding belt machine with a fine belt. If you are careful you don't take off much. Then I use 400 grit paper on glass. If the stones are cheap it is hardly worth the effort. It just depends on what your sharpening needs are at the moment. When stones get out of wack I use them when I am turning parts on my metal late. They are nice to break an edge with out changing lathe bits. They have a hundred and ones uses for other things. I even use them on my feet and nails. LOL Happy stoning.
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4th May 2009, 06:42 PM #13
Hi Tom. What grit W&D, and do you use water for lubricant? Steve (toolbagplus) says he uses kero as lubricant, but I would guess he's talking oilstones.
Can I use dune sand for my oilstones, or do I need something coarser?
Thanks in advance guys. I've never flattened my oilstones before, and I've only recently acquired my first waterstone (6000g King).
Cheers, Vann.
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6th May 2009, 05:39 PM #14
Vann, garden variety 240 grit W&D will be fine for King water stones and Aluminium Oxide based Indian oil stones, with water and thin oil respectively. A Nagura stone for cleaning and preparing the King will also be helpful.
It's the Silicone Carbide oils stones that are the hard ones to flatten, this is where sand or loose Silicone Carbide grit is helpful."Human beings, who are almost unique in having the ability to learn from the experience of others, are also remarkable for their apparent disinclination to do so."
- Douglas Adams
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12th May 2009, 11:11 PM #15
Damn, I've just spent the last hour and a half rubbing (in a figure 8 pattern) my oil stone on concrete to remove hollows to discover the stone is slightly rounded by putting a straight edge on it against the light.
What next ?
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