Thread: With all this talk of ceramic blades...

Of course those are razor blades not designed for shaving but if you want to take a bullet for the troops go ahead and let us know how it works out.

Well various excuses regarding packaging slicing testing and what not came up.... a few should be here Thursday... the bevel may suck for whiskers as they are intended for slicing but we shall see....

Factory Delayed shipped now Should arrive Tuesday but if I miss the UPS guy perhaps pick them up the week after at the shipping depo can't wait to play with these....

Well with the rumors of the kyocera folks I was very tentative trying these despite my overwhelming desire to give one a whirl. Took one out of the package lightly swiped my forearm with just the weight of the blade have a big bald patch now once again. Popped it into my "straight" (that takes slotted razor blades) and lathered up and slowly brought it to my face worried I'd be attending my sisters graduation on Thursday covered in gashes.

After a slow start that felt like a bit of tugging here and there with that slow of speed... What I found was an extremely non-aggressive blade. I found myself buffing with it relatively often to get to that BBS finish and no matter what I did I could not seem to cut myself or get any red irritation blade buffing XTG on my neck brought a slight pink that quickly faded. This is a sharp contrast to when I last used this "straight" with a CVS brand DE blade in it where I got a huge gash that took 5mins to close with a styptic and microcuts and red irritation on my neck.... mind you this was two days ago so I don't think my technique with it has drastically improved Some more trials are surely necessary but for now I'm out of hair. And a couple of pictures...






Not the best photos but you can get some sense. Unsure what the bevel angle is on these but it appears to be a double bevel looking at the way it reflects light one to thin it out and then a second to form the edge that is only right at the very edge itself.

Someone was kind enough to take a few images for me and give me a rough overview of Atomic Force Microscopy (AFM). After much tweaking got a picture of that secondary bevel.



You can see here the edge of the rough to smooth with the rough having some 5.4micron deep valleys.



Had to adjust the angle of the blade to begin to focus on the smooth section so you can see the rough appearing to drop down in this photo on the left side. The smooth section with that steep bevel angle still was not a level sample though and is dropping away to the right.



As you can see from the scale started to focus in on the smooth section. My assumption is they used 0.25micron diamonds for this microbevel honing? Please note the bulbous spec of dust (raised white spherical structure there). Did not clean these blades as curiosity about certain adhesion characteristics was important. The microscope can do better but ran out of time to massage it into focus... Hope you enjoyed them half as much as I did hehe

FreyGrimrod,

Just and FYI, your images you linked to is causing a pop-up for "Authentication Required" to your .edu host.
It requests it when accessing this thread and when replying to the thread.

Just thought you would like to know.

woops... let me fix that

Better?

My father was a scientist at corning glassworks in the sixties. He developed a ceramic glass blade that they tried to use for razorblades. The problem was the test subjects wouldn't even feel that they had been cut, and take a sizable circle of flesh off. Whenever dad and I talk about it, my dad shudders, making me think it was rather gruesome.

That seems to indicate a use in the surgical field, where it is common to only use a blade once.

Originally Posted by unlearny

My father was a scientist at corning glassworks in the sixties. He developed a ceramic glass blade that they tried to use for razorblades. The problem was the test subjects wouldn't even feel that they had been cut, and take a sizable circle of flesh off. Whenever dad and I talk about it, my dad shudders, making me think it was rather gruesome.

That seems to indicate a use in the surgical field, where it is common to only use a blade once.

Gruesome stuff.

Originally Posted by cotdt

You would simply use less pressure against the skin with the ceramic. If anything, it should be safer if properly used. There are diamond blades with edges only a single atom thick and they are reported to shave just fine. As long as you don't use pressure.

seems like just touching it to your face would cause a cut.