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Sharpening with Paper Wheels 16667

Zombie Apprentice Posts: 12,981
Re: Sharpening with Paper Wheels
« Reply #60 on: February 03, 2019, 08:08:59 PM »

 :salute:   :popcorn:

Everything’s adjustable
Hero Member Posts: 922
Re: Sharpening with Paper Wheels
« Reply #61 on: August 14, 2019, 09:10:38 PM »
Italian made A.G.A Campolin Maltese stiletto from a collector.
The knife was recently bought brand new from a foreign shop, but it came with quite a lot of blade play, a very rough ~55 degrees inclusive "edge" with a big burr still attached to it, and no point at all.
Also both sides of the blade aren't mirror images of each other, with a center ridge that is off a bit on one side.
Anyway, especially the lack of a point bothered the owner, the bad edge came in second, and fixing the blade play will probably be a job for another day.
This is how the knife looked before resharpening:









And how the knife looks now.
While keeping the edge angle about the same so the bevels would not widen too much per owner's request, i resharpened the main edge completely and the bayonet grind only superficially to come to a sharp point with a 15 micron diamond compound Paper Wheel, then cleaned up the bevels a bit and removed the tiny burr with a 1.0 micron diamond compound Paper Wheel.
The edge angle again measures ~55 degrees inclusive, yet the new apex is just sharp enough to shave the hair on the back of my hand a bit on skin level.





Zombie Apprentice Posts: 12,981
Re: Sharpening with Paper Wheels
« Reply #62 on: August 15, 2019, 06:56:44 AM »

Always good to see what you've been up to Kwakster   :salute:

 :cheers:

Everything’s adjustable
Hero Member Posts: 922
Re: Sharpening with Paper Wheels
« Reply #63 on: November 15, 2019, 01:38:50 PM »
The first owner of this small Sebenza apparently thought it a good idea to use the knife for sharpening practice in his new Wicked Edge.
The outcome made him sell the knife for a measly 150 Euro's to owner number two, who sent it to me with the request to tidy things up a bit and give it a bit of a shiny edge.

Below is what the knife looked like when i received it, still with it's very rough and partly unapexed "edge", and with an edge angle of ~40 degrees inclusive at the straight part of the edge, changing into ~45 degrees inclusive from belly to point.











Hero Member Posts: 922
Re: Sharpening with Paper Wheels
« Reply #64 on: February 04, 2020, 03:41:34 PM »
After reprofiling & sharpening on a Paper Wheel with 15 micron diamond compound, then deburring and polishing it a bit with a second Paper Wheel coated with 1.0 micron diamond compound.
The new edge is a bit convex, and measures ~30 degrees inclusive on the straight part of the edge, changing into ~35 degrees inclusive from belly to point.
This to avoid widening the bevels there too much, as this blade is relatively thick behind the edge in that area.
The last picture shows a small facet at the heel which has an entirely different angle, so i could not remove it without making things worse.
Visually it's not perfect yet treetopping sharp, and the owner was happy.





Hero Member Posts: 922
Re: Sharpening with Paper Wheels
« Reply #65 on: February 04, 2020, 03:43:20 PM »
User LH Sebenza Micarta with it's blade made from Devin Thomas stainless basketweave damascus (AEB-L and 304)
Reprofiled & sharpened the old slightly convex edge with it's apex @ ~40 degrees inclusive into a new slightly convex edge with an apex @ ~30 degrees inclusive on a Paper Wheel with 15 micron diamond compound, then removed the extremely fine burr on a piece of copypaper with a dab of 0.25 micron diamond paste.
The new apex is reverse chest hair whittling sharp and the new point is also quite close to being centered again.
To my functioning eye the bevels look near-mirror like, but the camera sees a bit blotchy scratch pattern due to the different layers in the damascus steel.

Before:









After:











Global Moderator Point Of No Return Posts: 36,861
Re: Sharpening with Paper Wheels
« Reply #66 on: February 04, 2020, 07:26:15 PM »
User LH Sebenza

Yes a lefty!! Nice work kwakster.   :tu:   :like:

 

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