GEC#73, re profile angle?

[KrisNZ]

Hello to all, I want to thin the edge down on my Northfield #73 in 1095, to give it a more usable edge for my everyday cutting needs. I'm going to use a Lansky system.
My question being, what angle do I use? Many thanks.

Kris,.

 

[Jason B.]

The lowest one you can.

 

[lutejones]

hello,
two of my GEC were very thick behind the edge when they arrive, I'll recomend you to thin the grind quite a bit by laying the side of the blade flat on the stones, before thinking of secondary bevel angle.

this one here is reprofiled about 16-18 degrees per side. and the bevel width is huge for that little blade. It actually cuts but it wedged the paper while slicing through.
now is thinned a lot and this bevel is about 10-12 degrees per side and the bevel width is less than what it was with the other angle.


Anyway, I like to keep the angle on my slip joints rather low, to maximize cutting performance. but if you have a thick grind you end with a huge secondary bevel and you hav to remove a lot of metal to touch up
Hope it helps

 

[Obsessed with Edges]

The lowest one you can.

^^That. It's what I'd do, anyway.

With the Lansky, the '17' setting on the clamp will likely give you ~14-15° per side (28-30° inclusive) or slightly lower, if you clamp the blade into the milled notch in the end of the clamp's jaws. That should leave maybe ~1/2" or so of the blade extending beyond the end of the jaws, depending on how wide your blade is(?). The angle gets lower with more exposed blade width beyond the front of the clamp.

1095 can be a wicked slicer, and a somewhat more acute edge angle only makes it more so. :thumbup:


David

 

[Omega Leather Works]

I put an edge on my #57 (same steel, same heat treat) that is a bit more acute than 30° inclusive:

I've gotten a bit of edge roll, but nothing drastic or even unexpected. For edc I'd say 30° would be great.

 

[KrisNZ]

Thank everyone, helpful and informative as usual.

Kris,.