Grand Unified Grit Chart

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SteveG
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Grand Unified Grit Chart

Post by SteveG » Mon Feb 06, 2017 12:30 pm

I believe this is the older version of this chart. I'll try and post the newer version as well.

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SteveG
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Re: Grand Unified Grit Chart

Post by SteveG » Mon Feb 06, 2017 12:37 pm

Newer Komitadjie Grit Chart from his Google Docs store converted to a PDF.

Komitadjie Grit Chart.pdf
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Jeff B
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Re: Grand Unified Grit Chart

Post by Jeff B » Tue Feb 07, 2017 5:38 pm

To view Komitadjie Grit Chart Google Spreadsheet without having to download.

https://docs.google.com/spreadsheets/d/ ... edit#gid=0
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ken123
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Re: Grand Unified Grit Chart

Post by ken123 » Fri Feb 10, 2017 6:23 pm

FWIW the Nubatama stones follow the Shapton standard ratings.

My compounds can be viewed more straightforwardly. So a 16 micron particle is a 1k grit. From there you can deduce the rest by multiplication or division by doubling/halving. 8 micron is 2k, 4 micron=4k, 2 micron=8k and 1 micron =16k. This extends out both up and down, so .5 is 32k, .25=64k .125=128k. You can also multiply and divid by bot two and 10, so while 16k is 1 micron, 160k is 0.1 microns. Similarly 32k is 0.5 microns and 0.05 is 320k and 0.005 is 3200k or 3.2 million grit. You can also interpolate to figure out 0.75=24k, 1.5=12k and 3 and 6 microns are 6k and 3k.

Going in the other direction 30 microns is 500 grit, and coarser compounds - 45(375 grit), 80(~200 grit), 200(80 grit) and 300 (50 grit) microns can also be compared in a similar manner.

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DonnieFi
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Re: Grand Unified Grit Chart

Post by DonnieFi » Thu Jul 13, 2017 6:34 pm

I don't see Suehiro stones in the chart (unless I missed it?). Does anyone know what the partical size is on the Rika 3k and 5k?

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Kit Craft
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Re: Grand Unified Grit Chart

Post by Kit Craft » Sun Jul 16, 2017 11:30 am

DonnieFi wrote:
Thu Jul 13, 2017 6:34 pm
I don't see Suehiro stones in the chart (unless I missed it?). Does anyone know what the partical size is on the Rika 3k and 5k?
I wouldn't go crazy over where the stone falls on that chart. The 3k is probably around 5-6 micron and the 5k around 3-4 micron.

BillyJack
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Re: Grand Unified Grit Chart

Post by BillyJack » Wed Jan 10, 2018 7:04 am

I think this chart is invaluable! I noticed there is only one column for Shapton Stones. Does the grit rating for the listed Shapton Stones cover both the Pros and Glass Stones? Also is it possible to get the chart updated? I know Edge Pro has replaced the #320 grit stone with a #400 grit stone and they came out with 2 new stones: a #2300 grit and a #4000 grit.

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ChefKnivesToGo
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Re: Grand Unified Grit Chart

Post by ChefKnivesToGo » Mon Apr 02, 2018 11:04 am

Here is a simple, easy to understand micron to grit comparison chart.

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Radar53
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Re: Grand Unified Grit Chart

Post by Radar53 » Fri Apr 13, 2018 6:14 pm

Just when I was thinking that I was starting to get my head around all this ...... Is this another grit standard? A number of the micron sizes above are at quite some variance to what is printed on Shapton stones eg 8000, 5000, 500 etc. So where & to what does the latest reckoning sit?
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