Thread: Razors with a smile.

Originally Posted by wmrayt

I'm going to show my ignorance again. When you say rolling X. Is the blade flat through the stroke or like the tip of a knife needing to be raised at the tip and heal?

If the blade is held at any fixed angle relative to the stone it will only contact the edge and the spine in one spot. The edge and the spine of a smiling razor lie on a conical section. The conical section is flat enough that it is hard to recognize it as such, but it is. In order to contact all of the conical section it has to be rolled.

Take a dinner plate and lift one side until a spot near the outer diameter touches the table. It will only be touching the table in two spots one near the outer edge and one on the ring on the bottom of the plate. Do you see how you have to roll the plate to get other spots to contact the table? A smiling blade is the same but on a small enough scale that the roll is very subtle.

Originally Posted by bluesman7

If the blade is held at any fixed angle relative to the stone it will only contact the edge and the spine in one spot. The edge and the spine of a smiling razor lie on a conical section. The conical section is flat enough that it is hard to recognize it as such, but it is. In order to contact all of the conical section it has to be rolled.

Take a dinner plate and lift one side until a spot near the outer diameter touches the table. It will only be touching the table in two spots one near the outer edge and one on the ring on the bottom of the plate. Do you see how you have to roll the plate to get other spots to contact the table? A smiling blade is the same but on a small enough scale that the roll is very subtle.

One of the best explanations I've read!

I've never understood the 'X' as it's more of a 'C' as you have described very well. :

Originally Posted by cudarunner

One of the best explanations I've read!

I've never understood the 'X' as it's more of a 'C' as you have described very well. :

It becomes an "X" on the return stroke

Originally Posted by onimaru55

It becomes an "X" on the return stroke

Well it 'could' become a D

Yes your right, but sometime ya just gotta have some fun.

Originally Posted by cudarunner

Well it 'could' become a D

Yes your right, but sometime ya just gotta have some fun.

Looks like the "infinity" symbol on Randy's diagram

Originally Posted by onimaru55

Looks like the "infinity" symbol on Randy's diagram

now where would I have found that

Originally Posted by cudarunner

now where would I have found that

At the library?

Did I win