Thread: I think I have a double bevel...

actually the tape increases the bevel angle, so the scratch marks you are seeing should be from a lower angle, i.e. negative tape if you will
most likely it's from using pressure, or sometimes abrasives can creep upwards and leave scratch marks beyond the bevel.

i would not worry about it

Originally Posted by gugi

actually the tape increases the bevel angle, so the scratch marks you are seeing should be from a lower angle, i.e. negative tape if you will
most likely it's from using pressure, or sometimes abrasives can creep upwards and leave scratch marks beyond the bevel.

i would not worry about it

If what your saying is that the scratch marks are above the bevel, ie towards the spine side, not the edge side; then no, you do not have a double bevel and I agree with Gugi. If I use DMT's to reset an edge I get scratch marks above the bevel. Its annoying and why I've stopped using them for the most part. Even the EF leaves scratch marks above the bevel sometimes. Very unsightly.

Originally Posted by Leighton

If what your saying is that the scratch marks are above the bevel, ie towards the spine side, not the edge side; then no, you do not have a double bevel and I agree with Gugi. If I use DMT's to reset an edge I get scratch marks above the bevel. Its annoying and why I've stopped using them for the most part. Even the EF leaves scratch marks above the bevel sometimes. Very unsightly.

That's it exactly...the scratch marks which don't polish out are "above" the bevel - meaning in between the portion of blade that does in fact polish up (which is along the actual edge of the blade) and the spine. I guess that means it's ok, b/c it's sharpening up and shaving...just not aesthetically pleasing...annoying, but good to know.

are you talking about those kinda scratches that happen when you over run the end of the stone or you are seeing a separation occurring within the bounds of the bevel?

I think Leighton is referring to scratch lines that extend out from the bevel itself into the grind/belly of the razor, really prone to happen on wedges especially, and are usually long (in comparison to the bevel width). Is this right Leighton?

I think razorburne is referring to having a bevel where half of the bevel is polished, and the other half of the bevel looks like it was finished on a 1k or 4k or whatever it looks like. That is, when viewing the razor from 20 inches away, you can see a bevel. As you look closer, you realize that within this bevel, half of it is polished (lower half toward the edge) and the upper half (half on the spine side) is still coarse as if finished on a low grit. Is this right Razorburne?

If this is right, razorburne, then yes this is a double (or at least some kind of complex) bevel, but like gugi said, this result is usually caused by ADDING tape. When you add tape, you will be polishing the lower portion of the bevel (edge half) and the upper portion of the bevel will remain at whatever grit level you were on before you added the tape. If you didn't add tape then yeah it's kind of like the upper half of the bevel was set with negative tape, lol. There are probably a number of causes of this, but I'm not sure exactly what they could be. Possibly using too much pressure and/or torquing the edge into the hone too much? Maybe hones that are dished out a little? Either way, I wouldn't worry about it. When you really have to worry about it is when you have the opposite (upper half of the bevel is polished and lower edge half is not). If you really want to fix it, you can drop down to the 1k level (or extra time on the 4k level) and reset the bevel so that it's continuous throughout it's width. I'm not sure you'd notice much (if any) difference in the shaves, though.

Originally Posted by pjrage

I think razorburne is referring to having a bevel where half of the bevel is polished, and the other half of the bevel looks like it was finished on a 1k or 4k or whatever it looks like. That is, when viewing the razor from 20 inches away, you can see a bevel. As you look closer, you realize that within this bevel, half of it is polished (lower half toward the edge) and the upper half (half on the spine side) is still coarse as if finished on a low grit. Is this right Razorburne?

That is exactly right - that's what it looks like.

I guess the important part is that I am able to get it sharp and shave with it.

If I was going through the progression and it just wouldn't seem to get sharp at all, I suppose then I would be looking more into a double bevel, where establishing a new single bevel would be necessary, if in fact I didn't want to use tape to hone all the time....right? (and that could be done at 1k)?

FWIW...

Just for reference here, double bevels take about 20 laps on a Norton 4k to be done away with....

Adjust that as necessary for other hones...


Sorry slightly