Thread: Should an edge of a 1k after the bevel set pop hairs?

here

http://www.bushcraftuk.com/downloads...nifeshexps.pdf

Looking for others

http://www.scribd.com/doc/10044505/E...John-Verhoeven


There is another older one also to I can't find again yet has some good Micro-Graphs


"Two types of razor blades were used to establish a standard that could be used tocompare blades produced in these experiments. The first blade was a Gillette doubleedged stainless steel blade produced in the early 1980s, when double edge blades werestill used in disposable razors. Figure 7 presents SEM micrographs of this blade in the 3orientations discussed for Fig. 1. Analysis of the edge width (EW) was done at 3 randomlocations along the edge at magnifications of 3000 to 10000x and values of EW varied onaverage between 0.35 and 0.45 microns (µm). "



There is the part on DE Blades Looking for the Old stuff on the SR's

6tr67

Originally Posted by Bayamontate

A properly set bevel can pop arm hair, or in my case leg hair at skin level. This has been my experience.

Off the 1k?

Yes, off a 1K.

Yes, at 1k the edge should be able to treetop/ pop hair. Tree toping is holding the edge off the skin so the top 1/3 of the hair or higher is cut unsupported. It should easily shave hair at the base of the skin. Bottom line is, the edge should be completely sharp at 1K. Once it is sharp do a few more light laps to begin the polishing process.

That said, every ones hair is different and will be easier, more difficult or almost impossible to cut, unsupported. So it is not that important that “your” hair will not pop.
I do not use a hair test, as a test of the quality sharpness, but more as a test of sharpness of different sections of the edge. I test 3-5 areas (Heel & Toe and 1 to 3 places in between). It is so subjective a test, that it is not a reliable test as to quality of sharpness for me.

I have read where people will quantify the level of sharpness with a number, based on how much effort is used to pop a hair. If that works for you and you can distinguish a difference great, use it. And if you can’t, don’t worry about it.

More and more I use the thumb pad test. It is quicker and more reliable, but it does take a lot of experience to develop the “feel” to distinguish levels of sharpness. And I hate hair all over the place, it seems whenever I do a hair test any more, I end up with a hair on the stone, it is irritating and can screw up an edge.

So shave a few hairs and if it works, progress to the next stone.

Just for comparison, 12 microns = 0.00047 inches. Average human hair is 17-180 microns. So the edge of the blade is thinner than even the finest downy hair, and many times thinner than "average" thickness hair.

Just wanted to subscribe, nothing to add

Originally Posted by Euclid440

More and more I use the thumb pad test. It is quicker and more reliable, but it does take a lot of experience to develop the “feel” to distinguish levels of sharpness. .

It does take some practice, but I find the TPT to be as effective as popping hair to see if bevel is set (and it's a lot easier). What I have noticed is that there is this strange, "Sticky" feeling that occurs with the TPT when the edge is sharp enough to move onto the next stone. It's like the blade "sticks" to your thumbpad when you make contact.

I'm prob doing a bad job of explaining it, but does anyone know what I mean?

Yup, hard to describe.

Originally Posted by jpcwon

It does take some practice, but I find the TPT to be as effective as popping hair to see if bevel is set (and it's a lot easier). What I have noticed is that there is this strange, "Sticky" feeling that occurs with the TPT when the edge is sharp enough to move onto the next stone. It's like the blade "sticks" to your thumbpad when you make contact.

I'm prob doing a bad job of explaining it, but does anyone know what I mean?

yes I can get it there (if Im picking up what you are putting down) but less so when my thumb is wet.

Originally Posted by ccase39

yes I can get it there (if Im picking up what you are putting down) but less so when my thumb is wet.

Right; the thumb needs to be dry to feel what I'm talking about. Just be careful when doing the TPT, or you'll end up like me!!