Est. 1998 — 27 years of woodworking knowledge
Diamond grit/paste
Jim DeLaney, Austintown, Ohio
>I'd like to try using diamond paste for sharpening/blade-back-flattening, but am a bit confused as to what grits/meshes to use. I see references to 360 mesh up to 50,000 mesh on some lapidary sites, and a couple of others that are measured in microns (�).
So, the question is: What grits/meshes do I want/need?
Secondly, is there a comparison chart for mesh-to-micron sizes?
TIA
Re: Diamond grit/paste *LINK*
Jim in Burlington Ontario
>Jim I asked that question a few weeks ago. Jist of the answer is you need a 15 micron and 1 micron paste/powder. It's sold by the carat and the guys who buy it, usually buy 25 carats at a dollar per. As to what to use it on is still up in the air as far as I can tell. People are using cast iron thru acrylic and wood substrates to flatten it on.
http://www.reentel.com/Products/DiamondPowder/DiamondPowder.htm
Re: Diamond grit/paste
Jim DeLaney, Austintown, Ohio
>Thanks, Jim!
Just the info I was looking for.
Re: Diamond grit/paste
Andy Lincoln,in Dearborn MI
>Jim,
After being told about this from fellow Neander,Robert Tarr I found this seller on ebay and ordered a syringe of each grit/mesh/micron available ebay auction .I have been very pleased with the results flattening the backs of chisels and plane irons.Usual disclaimers apply,no financial interest/affiliation/warranty/etc.
Also ,compliments of Dieter Schmid's website there is a grit comparison chart
Also,hope you are growing accustomed and acclimated to your new life here in the midwest.
Andy
Re: Particle sizes
paul womack
>Here's the best chart I know of. It's a little out of date now (I think abrasive technology has advanced since it was put together), but it's very comprehensive and useful.
abrasive comparison chart by Steve Bottorff
BugBear
Follow-up questions for Andy
Wendell @ Murphy, TX
>What are you using for your substrate? Do you think you need all of the mesh/grits/microns or is there some subset that you have found most useful? Thanks for the heads-up. I've been wanting to try diamonds ever since Bill Tindall posted about his experience.
Wendell
Re: Diamond grit/paste
david charlesworth
>Jim,
I experimented and wrote about this in Furniture & Cabinetmaking magazine, issue 65, June 2002. I got advice from Mike Stein and it worked very well indeed.
For flattening and preparation you might consider, 30 then 15 micron paste.
For polishing to an almost true mirror finish, continue with, 6, 3, and finally 1/2micron.
If you skip too many steps it will take forever to remove the previous scratches
DMT sell three grades in convenient small syringes.
Best wishes,
David Charlesworth www.davidcharlesworth.com
Re: Follow-up questions for Andy
Andy Lincoln,in Dearborn MI
>Wendell,
I have been using mdf scraps as a substrate.Cheap,easy to find and small pieces work quite well.I haven't experimented yet with skipping a grit or two so I have no profound answer for that.
Andy
FYI, Charlesworth Link
Don Thompson - Cutler Ridge, Florida
>I tried the URL in your message (www.davidcharlesworth.com), and it does not go anywhere. I discovered that http://www.davidcharlesworth.co.uk does the trick!