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TOPIC: Lapping Films and New Blank Handles

Re:Lapping Films and New Blank Handles 3 weeks 1 day ago #17952

  • tcmeyer
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I can't speak for Wicked Edge, but I use film as a direct replacement for strops. When used with the Variable Stone Thickness Adapters, I am able to set the angles very precisely and know that I am polishing right at the apex without rounding it off. Additionally, the film on glass lets you use both up and down strokes, provided you use them carefully.
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Re:Lapping Films and New Blank Handles 3 weeks 1 day ago #17953

  • razoredgeknives
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tcmeyer wrote:
I can't speak for Wicked Edge, but I use film as a direct replacement for strops. When used with the Variable Stone Thickness Adapters, I am able to set the angles very precisely and know that I am polishing right at the apex without rounding it off. Additionally, the film on glass lets you use both up and down strokes, provided you use them carefully.

Last night I sharpened up two straight razors... 800-10k choseras. On the second one, I decided to try my SiC lapping film that I had from a year or two ago. I decided to go w/ the 1 micron film. It was interesting!

I have aluminum blanks that I lapped flat on a course diamond stone and that's what I mounted the lapping film to (glass would be better here obviously). I took some pics w/ my scope, which I will try to get up soon, but they are on my home computer.

It took around 100 passes at a slightly elevated angle to remove the grit scratches from my 10k choseras (which are on the 2 micron level). It was interesting though, I could still notice a "wire edge" from the lapping film I believe, but this was probably due to the fact that I wasn't doing edge leading passes at all. Straight off of my lapping film I could not pass the HHT at all.

Interesting thing happened when I went to my nano cloth... I could feel some "bumps" on my nano cloth, which felt like the substrate or the actual fibers were not perfectly flat. This yielded an edge that was irregular where it folded the wire edge over in certain parts and not other parts, in an irregular fashion. I finally backed to my 1um cow leather strops (very smooth) at a lowered angle, and then from that directly to my .125 CBN roo strops (again, very smooth) and I finally was able to pass the HHT at all points on the blade.

I need to do more testing... but at this point I still like going directly from my highest stones to light stropping for straight razors. I think I will order the glass/film from WE or Oldawan just to check it out.
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Re:Lapping Films and New Blank Handles 3 weeks 1 day ago #17954

  • DanMaloon
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Ive got mine mounted to aluminum like Josh. You can scrub with the film. Ill lap to .5 with the film then switch over to leather and progress. The film erases and polishes, the strops refines and perfects the edge. Of coarse the lowest i have is .5 film so maybe bringing it to .1 would eliminate the need for strops as it would pretty much be the same as .125 on nano right? Just knew that leather affects the steel differently from other mediums and was essential in the final steps of edge refinement. Who knows.
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Re:Lapping Films and New Blank Handles 3 weeks 1 day ago #17956

  • wickededge
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drichardjackson wrote:
Are these meant to replace stropping in the cases where you would want to use them?

The can replace or augment the strops. Stropping can cause a slight rounding of the edge which doesn't happen with the lapping films, unless you're putting them on leather. I find the films to be very efficient at cleaning up scratches from the diamonds, so if I'm going for a super polished edge, I'll use the films first, down to at least .5 microns and then use my kangaroo strops with .25 and .125 micron sprays to get the rest of the way there. I haven't done enough testing to see what kinds of cutting performance and edge retention differences there might be between a stropped blade vs one that is finished with the films. Project coming up!
--Clay Allison
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Re:Lapping Films and New Blank Handles 3 weeks 1 day ago #17957

  • razoredgeknives
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wickededge wrote:
drichardjackson wrote:
Are these meant to replace stropping in the cases where you would want to use them?

The can replace or augment the strops. Stropping can cause a slight rounding of the edge which doesn't happen with the lapping films, unless you're putting them on leather. I find the films to be very efficient at cleaning up scratches from the diamonds, so if I'm going for a super polished edge, I'll use the films first, down to at least .5 microns and then use my kangaroo strops with .25 and .125 micron sprays to get the rest of the way there. I haven't done enough testing to see what kinds of cutting performance and edge retention differences there might be between a stropped blade vs one that is finished with the films. Project coming up!

oh how I do miss the experimentation!! :unsure: can't wait to see what you come up with! ;)
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