Help identifying a grind..

Just wondering about my str8. I have a Geo. W. Korn 5/8 that it's impossible to find info about. What I do know I found from links posted here about the company. Anyway, I think that the blade is at least extra hollow ground but it definatly sings and I can't find an example of a hollow ground blade that thins out nearly as soon as this one does. All of the curviture of the grind is in just under the first half of the width and then the rest is just paper thin to the tip. I was just wondering if anyone here could tell me if it could be a singing blade or if thats just a normal extra hollow ground. There are very few pics that demonstrate the grinds, that I could find anyway. Just curious. I like it whatever it is. Honing was a breeze. I'll try to put up some pics in a sec..

Terms like "singing hollow" "extra hollow" etc are all subjective. If you want to describe it to someone else, I'd say use your best judgement or include an end on photo.

This pic is from the wiki. It should help

http://straightrazorpalace.com/srpwi..._GrindForm.GIF

Well, I can't figure out how to post pics here.. uploaded the best end on I could get with my crappy camera, it's in my albums on my profile, though the only pic I could get the tip to show up is a bit doubled so I don't know if it will help anyway. Simple man, that is the best example I've seen. Thanks. It's def a extra hollow ground according to that chart. Thanks for the help, all of you.

Quote:

---

Originally Posted by holli4pirating

Terms like "singing hollow" "extra hollow" etc are all subjective. If you want to describe it to someone else, I'd say use your best judgement or include an end on photo.

---

This is the best advice, in my opinion. Even trying to go by that chart in the wiki is difficult for me to do, and even if I were able to get it right, I'm not convinced using the precise grind would improve the understanding in 99.9% of my razor related conversations.

Head on pictures showing the grind are the only real way to communicate effectively, IMHO.

Quote:

---

Well, I can't figure out how to post pics here..

---

Upload the photo as an _attachment_ to your message. It shows up correctly when the message is displayed.

Charles

oohhh.. cool thanks, here we go. Like I said, bad pic but the best I could get. Its really doubled from lack of focus so it looks more like a full hollow but, im telling ya, it's dead flat and paper thin from about 3/8ths of the way down. Thanks for all the help guys.

I want to say it's a 3/4 to 1/2 hollow...not 100% sure though

Uhh having trouble getting these pics to cooperate.. let's try this again..

..Now that its light out I took a few more. Here's the only one that came out semi focused. I know I was a bit off center but if you look close you can see how early the taper ends. Thats why I'm thinking extra hollow. Like I said no big deal really, just wanna know what I have so I can have something to compare against when I go to buy my next razor.

Your best bet is to compare its profile with the chart linked in Simpleman's post. It looks like an ordinary full hollow to me, and like nearly all full hollows, it has a belly. This is indicated by the reflection on the blade. You can confirm this by looking at the reflection of an overhead light an the face of the blade.

Hold the blade with the spine toward you and the edge away. Rotate the blade so that the reflected light travels from the spine to the edge. If the blade does not have a belly, then the reflected light image will travel directly from the spine to the edge. If the blade has a belly, then as you rotate the blade and the image travels toward the edge, a second reflected image will appear from the edge and will travel toward the spine.

The region where the two images merge is at the belly of the blade because this region is slightly convex whereas the areas toward the edge and spine are concave.

I would just call it a full hollow. Singing hollow, extra hollow, etc. are all just different versions of full hollow to me.

There does not seem to be a definitive way to judge the hollowness of a razor. I remember asking about it awhile back, and the identifications do not match the depth of the hollow in relation to the spine and edge. Taking measurements off of various blades, most full hollows start roughly halfway up the blade. Some more, some a bit less... Assigning a degree of hollow to a blade is subjective. There is no way to measure a blade and say for certain "how hollow" it is.