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I think Randy Tuttle has a bunch of microtome blades, or at least he did at one time. They show up on ebay as well.

How did they shave? Whiskers, I mean, not frozen tissue samples. I'm sure they shaved tissue samples just fine...

This is from the Schick website:



I'm sure the marketing guys wrote this, so it may may be only approximately accurate, but it's interesting nonetheless.

Edit: The P&G website is completely,...

Yup, both ASR and Feather have been inconsistent for me. My very first feather AC blade was so dull it wouldn't scrape armhair. The *next* one was the stuff of myth and legend though...

Don't forget TI straight razors, also sold as "shave ready". Not to mention Zeepk, Mehaz, Bass, Kamisori, and Sanguine.

Even in the DE industry sharpness is no given thing. Try a red-pack of...

I do not know how the factories test their blades, but I suspect they have a testing facility that can test whole batches very efficiently. Probably a sheet of some standardized material (dry...

I think we do need a lot more than 200, though I suspect scopes capable of that sort of magnification are pricey. Most of the "interesting" details from a sharpness perspective are in the first...

Yeah, it's been a real hoot.

rem acu tetigisti

An underhoned edge can look like just about anything, including a perfectly honed edge. The most perfect-looking edge I've ever seen under a scope (240x) was so dull it would...

They may show a wire edge; none of this is really definitive - the loss of depth perception means the photos are somewhat deceptive, plus they're not really high enough resolution to see the fin...

Too bad you don't have the one credential that actually matters here: you don't know how to hone.

And with that, you're going on my ignore list. buh bye.

You keep making the same mistake, and I hate to keep beating you over the head with it, but the results the photos show are not the results you think they are. You're forgetting the corollary to...

To some extent that's true, but that is a very rough approximation and the process that took those photos threw away a lot of information, information that is very important but because the photos...

If you go through the archives you will discover that for a period of many months I felt the same way. I am less certain of this now; though nowadays I find that I am less certain of a great many...

The bevel smoothness doesn't tell you as much as you'd like it to, which is unfortunate because the bevel is easy to see and the edge isn't. Remember the story about the woman searching for her keys...

I never said the microscope was worthless, I said you have to be careful about making interpretations and inferences from the microscope that aren't valid due to the limitations of the tool. The...

Beginners get very excited by this sort of thing, because they are looking for shortcuts that will take the trial-and-error out of the process. I felt the same way when I first saw the high-res...

That may be sufficient. The Japanese refer to the process of sharpening a sword as "polishing" for a good reason - they sharpened the entire side of the sword, like we do a wedge razor.

I think you are making assumptions about what I think that are unjustified, incorrect, and frankly quite insulting. I am skeptical that these photos show the things you think they show, because I...

I think you are overanalysing this :w While these photos tell us a lot, they don't invalidate all the things we already know. Things like "chrome oxide is both extremely inexpensive and extremely...

I believe you are mistaken or at least confused on this point. For a given grit, chrome oxide and diamond produce similarly sharp edges, but the chrome oxide will be more comfortable to shave...

I've noticed similar results with my Tam O'Shanter hone (my only slurry stone) when I've used it with and without slurry.

Has anyone ever done any sort of experiment with smooth vs toothed edges...

Let me just say that I wasn't at all surprised by the performance of the translucent arkansas - that photo is similar to what I see in my microscope after using mine.

Edit: Also, you can see where...