Comments on: Using a Kanaban and a 1-2-3 Block to tune a plane http://toolmakingart.com/2008/08/27/using-a-kanaban-and-a-1-2-3-block/ Timeless Tools Sat, 19 May 2012 20:07:31 +0000 hourly 1 http://wordpress.org/?v=3.3.2 By: Bob Strawn http://toolmakingart.com/2008/08/27/using-a-kanaban-and-a-1-2-3-block/comment-page-1/#comment-858 Bob Strawn Thu, 07 Oct 2010 23:41:22 +0000 http://toolmakingart.com/?p=259#comment-858 You are correct. That is why I keep three plates to grind against each other. With three plates, you can remain flat. Bob You are correct. That is why I keep three plates to grind against each other. With three plates, you can remain flat.

Bob

]]> By: MarkL http://toolmakingart.com/2008/08/27/using-a-kanaban-and-a-1-2-3-block/comment-page-1/#comment-856 MarkL Wed, 06 Oct 2010 20:37:55 +0000 http://toolmakingart.com/?p=259#comment-856 I have to mention, you're using an abrasive on a flat steel surface plate to grind true another steel surface. Over time low spots will develop and the surface plate will become dished and will no longer be truly flat. I have to mention, you’re using an abrasive on a flat steel surface plate to grind true another steel surface. Over time low spots will develop and the surface plate will become dished and will no longer be truly flat.

]]> By: BobStrawn http://toolmakingart.com/2008/08/27/using-a-kanaban-and-a-1-2-3-block/comment-page-1/#comment-168 BobStrawn Sun, 18 Oct 2009 19:24:54 +0000 http://toolmakingart.com/?p=259#comment-168 Lapidary supplies are good sources for a lot of different grits. http://therockshed.com/grit.html, http://www.dadsrockshop.com/abrasives.html are a few that I turned up with a web search. An important note on grits. Pressure destroys grit faster. Often a lighter pressure will slow you down in the short run, but the retention of grit will speed you up over the long run. There are two types of abrasive diamond crystals normally sold. The most common one sold these days is the friable diamond grit. It fragments easily. As a result it gives constant sharp edges, but it reduces in size quickly. Pressure will speed this process. The other crystal is more like a diamond ring. Not as sharp generally, it dulls instead of breaking. It still processes quickly, and it still lasts a very long time. It still dulls eventually. Here is a bit more data on this sort of thing. http://battlering.com/overkillsharp.html I prefer a good aluminum oxide to silicon dioxide grit for most things, it is more economical. Another good place to search for grits would be blast media used for sand blasting. Bob Lapidary supplies are good sources for a lot of different grits. http://therockshed.com/grit.html, http://www.dadsrockshop.com/abrasives.html are a few that I turned up with a web search.
An important note on grits. Pressure destroys grit faster. Often a lighter pressure will slow you down in the short run, but the retention of grit will speed you up over the long run.
There are two types of abrasive diamond crystals normally sold. The most common one sold these days is the friable diamond grit. It fragments easily. As a result it gives constant sharp edges, but it reduces in size quickly. Pressure will speed this process. The other crystal is more like a diamond ring. Not as sharp generally, it dulls instead of breaking. It still processes quickly, and it still lasts a very long time. It still dulls eventually. Here is a bit more data on this sort of thing. http://battlering.com/overkillsharp.html

I prefer a good aluminum oxide to silicon dioxide grit for most things, it is more economical. Another good place to search for grits would be blast media used for sand blasting.

Bob

]]> By: incanopy http://toolmakingart.com/2008/08/27/using-a-kanaban-and-a-1-2-3-block/comment-page-1/#comment-169 incanopy Sun, 18 Oct 2009 12:57:44 +0000 http://toolmakingart.com/?p=259#comment-169 Where do you get your AlOX 80 grit powder from? I ask because I haven't had great luck doing my course blade shaping using 325 micron diamond paste on a steel kannaban. The diamond does cut very quickly at first, but it also goes away fairly quickly, even if I rub the diamond into the kannaban using the flat side of an old O1 blade. That makes the process not cost-effective. In any event, I'm in the hunt for a cheaper abrasive powder to try for course grinding. The classic choice is silicon carbide, but since it breaks down so quickly, I would like to try AlOx as well. Thanks! Where do you get your AlOX 80 grit powder from?

I ask because I haven’t had great luck doing my course blade shaping using 325 micron diamond paste on a steel kannaban. The diamond does cut very quickly at first, but it also goes away fairly quickly, even if I rub the diamond into the kannaban using the flat side of an old O1 blade. That makes the process not cost-effective.

In any event, I’m in the hunt for a cheaper abrasive powder to try for course grinding. The classic choice is silicon carbide, but since it breaks down so quickly, I would like to try AlOx as well.

Thanks!

]]> By: Skip J. http://toolmakingart.com/2008/08/27/using-a-kanaban-and-a-1-2-3-block/comment-page-1/#comment-167 Skip J. Thu, 28 Aug 2008 18:47:54 +0000 http://toolmakingart.com/?p=259#comment-167 Quote:"Multiple large plates with different diamond grits might be nice someday. Bob" Oh my,..... now you're talking bigger plates than DMT's for large planes - and a larger selection of grit sizes, down to very small grit - that'll last a long, long time - for considerably less money. You mite need to work up a business plan on this one.... well, it had to happen someday I guess... congrats! Skip Quote:”Multiple large plates with different diamond grits might be nice someday. Bob”

Oh my,….. now you’re talking bigger plates than DMT’s for large planes – and a larger selection of grit sizes, down to very small grit – that’ll last a long, long time – for considerably less money. You mite need to work up a business plan on this one…. well, it had to happen someday I guess… congrats!

Skip

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