Thread: Blade correction

Ok so I put 2 blades to the stones this morning .
On the first I had lots of trouble getting the Bevel to be Even the more I chased it the worse it got.
The black on the edge of side (A) is a reflection.


On the second I had a problem with the heal.



How do I go about correcting these issues?
I used one layer of tape on both.

Thanks John

Did you check spine both sides with a straight edge to see if they are straight? There may be high or low spots that need to be corrected with layers of tape.
The second needs the heel to be be reshaped a little

Originally Posted by bouschie

Did you check spine both sides with a straight edge to see if they are straight? There may be high or low spots that need to be corrected with layers of tape.
The second needs the heel to be be reshaped a little

I did check the spine on a piece of glass and saw no wobble of either side on both razors. when you say with layers of tape what do you mean? How do I correct it with layers of tape? More and more layers until the bevel evens out?

If the spine is concave you fill in low spots with tape then one layer over all.
If convex you do the same.

Originally Posted by bouschie

If the spine is concave you fill in low spots with tape then one layer over all.
If convex you do the same.

I see. So this would need to be done with every touch up for the razors life?

It’s easiest to start with a measurement of the spine width as it relates to the edge to the spine hone contact area. You’re looking for a ratio of around 3.8to1 to 3.4to1, this is just a guide for honing angle. I put one piece of tape on the spine and use a low grit hone. Run a couple of strokes on the hone, it will show you the low spots in the spine. You need a parallel spine for most razors. If your spine is straight it’s just a matter of layering tape until you get the honing angle you want. The problems are when the spine is a mess. If the existing spine isn’t straight or isn’t parallel and out of spec in regard to honing angle, then you need to use tape. Below 14* the edge doesn’t have enough support, above 19*ish the hairs start to get wedged away from your skin and feels like pulling. The upper end of the honing angle is far less important than too low of an angle. If it can’t hold an edge what good is it.

That is why those that have a large number of razors keep a spreadsheet or log on each razor honing process.

So taking all this into consideration couldn't one correct the spine buy honing the spine until it is flat?

,,,,,

I seem to remember "he shall not be named" teaching that.

LOL.. I don't know he whom shall not be named. I was just thinking it. Now I have to search for the unnamed person to see what this is all about.