Welcome, Guest
Username: Password: Remember me
  • Page:
  • 1
  • 2

TOPIC: Shapton and Chosera Stone Microscopic Prgressions

Shapton and Chosera Stone Microscopic Prgressions 2 years 5 months ago #1945

  • jendeindustries
  • jendeindustries's Avatar
  • OFFLINE
  • Platinum Boarder
  • Posts: 326
  • Thank you received: 113
  • Karma: 34
After a long wait, the Chosera and Shapton WEPS stone microscopic progressions are up!

The Shapton Progression can be found here.

Chosera Progression can be found here.

Also, the Stock diamond and ceramic progression can be found here.

My next blog post will discuss the similarities/differences between the series.

Enjoy!
Tom Blodgett
Jende Industries, LLC

My Blog: jendeindustries.wordpress.com
The administrator has disabled public write access.
The following user(s) said Thank You: mark76

Re: Shapton and Chosera Stone Microscopic Prgressions 2 years 5 months ago #1946

  • holymolar
  • holymolar's Avatar
  • OFFLINE
  • Senior Boarder
  • Posts: 61
  • Thank you received: 25
  • Karma: 13
WOW! That's amazing to see microscopic evidence of what is really going on when sharpening/polishing with various stones.

You have made it possible for some of us to re-evaluate previously held beliefs about sharpening. And that's a good thing.

Thank you, Tom, for your expertise and for all the hours that you have already put into educating all of us.
The administrator has disabled public write access.

Re: Shapton and Chosera Stone Microscopic Prgressions 2 years 5 months ago #1953

  • mark76
  • mark76's Avatar
  • NOW ONLINE
  • Administrator
  • Posts: 1226
  • Thank you received: 379
  • Karma: 86


Thanks again Tom! The Shapton progression with your commentary is great.

Really looking forward to your comparison of the stones, especially of the medium grit ones!
The administrator has disabled public write access.

Re: Shapton and Chosera Stone Microscopic Prgressions 2 years 5 months ago #1969

  • razoredgeknives
  • razoredgeknives's Avatar
  • OFFLINE
  • Platinum Boarder
  • Posts: 779
  • Thank you received: 356
  • Karma: 38
tom, what would you go to after 10k choseras? have you seen what works best from the microscope? thanks bro!
The administrator has disabled public write access.

Re: Shapton and Chosera Stone Microscopic Prgressions 2 years 5 months ago #1972

  • mark76
  • mark76's Avatar
  • NOW ONLINE
  • Administrator
  • Posts: 1226
  • Thank you received: 379
  • Karma: 86
Now we are on the topic, did anyone take a close look at the pictures in the grit comparison chart of an edge after the 1200 grit ceramic stones and after the 1600 grit ceramic stones? Is that an optical illusion or is it a lot of microchipping that does not show up in pictures of the edge after Shapton and Chosera stones of similar grit sizes?
The administrator has disabled public write access.

Re: Shapton and Chosera Stone Microscopic Prgressions 2 years 5 months ago #1978

  • wickededge
  • wickededge's Avatar
  • OFFLINE
  • Administrator
  • Posts: 1777
  • Thank you received: 638
  • Karma: 91
mark76 wrote:
Now we are on the topic, did anyone take a close look at the pictures in the grit comparison chart of an edge after the 1200 grit ceramic stones and after the 1600 grit ceramic stones? Is that an optical illusion or is it a lot of microchipping that does not show up in pictures of the edge after Shapton and Chosera stones of similar grit sizes?

Nice observation. I hadn't seen the difference before, but it does look that way. I guess it shouldn't be surprising given the quality of the Shaptons and Choseras. Another thought is that the presence of moisture with the waterstones. I'd like to retry the ceramics lubricated with a little soapy water to see if there is a change.
--Clay Allison
The administrator has disabled public write access.

Re: Shapton and Chosera Stone Microscopic Prgressions 2 years 5 months ago #1979

  • jendeindustries
  • jendeindustries's Avatar
  • OFFLINE
  • Platinum Boarder
  • Posts: 326
  • Thank you received: 113
  • Karma: 34
I'll answer soon guys - I promise :)

Josh - I think I found the answer to your problem... I'm doing the paste progression now, and it's confirming what I thought. Short answer, you'll need pressure when transferring from the 1K WEPS diamond to the 14micron paste.... Pictures to follow soon... I'm in the middle of sharpening now!
Tom Blodgett
Jende Industries, LLC

My Blog: jendeindustries.wordpress.com
The administrator has disabled public write access.

Re: Shapton and Chosera Stone Microscopic Prgressions 2 years 5 months ago #1999

  • mark76
  • mark76's Avatar
  • NOW ONLINE
  • Administrator
  • Posts: 1226
  • Thank you received: 379
  • Karma: 86
wickededge wrote:
mark76 wrote:
Now we are on the topic, did anyone take a close look at the pictures in the grit comparison chart of an edge after the 1200 grit ceramic stones and after the 1600 grit ceramic stones? Is that an optical illusion or is it a lot of microchipping that does not show up in pictures of the edge after Shapton and Chosera stones of similar grit sizes?

Nice observation. I hadn't seen the difference before, but it does look that way. I guess it shouldn't be surprising given the quality of the Shaptons and Choseras. Another thought is that the presence of moisture with the waterstones. I'd like to retry the ceramics lubricated with a little soapy water to see if there is a change.

Is there a reason you think it might not have happened if the ceramics were lubricated, Clay? (I've wondered before what the main difference is between synthetic wet stones and the WEPS ceramics, why do wet stones need to be kept wet and the WEPS ceramics not.)

For what it's worth, I have never observed this amount of microchipping after using the 1200/1600 stones. (One stone progression I did can be seen here.) I have seen only a tiny amount, and Toms explanation of this (scratches from lower grit stones becoming apparent when polishing with higher grits) is quite convincing.

I thought this microchipping had also happened to the knife on the photographs in the grit chart and that it was pure coincidence that they showed up in the WEPS ceramics pictures and not in the Chosera/Shapton pictures.
Last Edit: 2 years 5 months ago by mark76.
The administrator has disabled public write access.

Re: Shapton and Chosera Stone Microscopic Prgressions 2 years 5 months ago #2001

  • wickededge
  • wickededge's Avatar
  • OFFLINE
  • Administrator
  • Posts: 1777
  • Thank you received: 638
  • Karma: 91
mark76 wrote:
wickededge wrote:
mark76 wrote:
Now we are on the topic, did anyone take a close look at the pictures in the grit comparison chart of an edge after the 1200 grit ceramic stones and after the 1600 grit ceramic stones? Is that an optical illusion or is it a lot of microchipping that does not show up in pictures of the edge after Shapton and Chosera stones of similar grit sizes?

Nice observation. I hadn't seen the difference before, but it does look that way. I guess it shouldn't be surprising given the quality of the Shaptons and Choseras. Another thought is that the presence of moisture with the waterstones. I'd like to retry the ceramics lubricated with a little soapy water to see if there is a change.

Is there a reason you think it might not have happened if the ceramics were lubricated, Clay? (I've wondered before what the main difference is between synthetic wet stones and the WEPS ceramics, why do wet stones need to be kept wet and the WEPS ceramics not.)

For what it's worth, I have never observed this amount of microchipping after using the 1200/1600 stones. (One stone progression I did can be seen here.) I have seen only a tiny amount, and Toms explanation of this (scratches from lower grit stones becoming apparent when polishing with higher grits) is quite convincing.

I thought this microchipping had also happened to the knife on the photographs in the grit chart and that it was pure coincidence that they showed up in the WEPS ceramics pictures and not in the Chosera/Shapton pictures.
Good points. My initial thought was that there might be metal particles on the stones that were causing the chipping so I want to try with soapy water to see if that makes a big enough difference to account for the chips in the image. I also want to explore any other differences between the stones and techniques for each one, moisture being an obvious one, hardness and friability being a couple others with the stones themselves. If the results aren't an effect of the stones themselves, then I guess it has to be technique, in this case, not enough time spent removing deeper scratches. I'm going to browse my images and see if there are other progressions I've done that include the ceramics.
--Clay Allison
The administrator has disabled public write access.
The following user(s) said Thank You: mark76

Re: Shapton and Chosera Stone Microscopic Prgressions 2 years 5 months ago #2002

  • wickededge
  • wickededge's Avatar
  • OFFLINE
  • Administrator
  • Posts: 1777
  • Thank you received: 638
  • Karma: 91
In looking at these images further and going back through the whole progression, it looks as though I wasn't hitting the edge with the ceramics. I'm going to have to go back and do it again. I have a brand new Farid mule in CPM-REX 121 just asking for me to sharpen it and document the process.
--Clay Allison
The administrator has disabled public write access.
  • Page:
  • 1
  • 2
Time to create page: 0.139 seconds