Re grinds

eveled

eveled

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I will sometimes re grind a blade to fill a specific role.

It is something I’ve always done since I was a kid. My Dad broke the tips off my first SAK knife blades when I was 6, by the time I was 8, I figured out how to use a vice and a file and fixed them.

Here are some examples.

Modified for whittling
IMG_3806.jpeg
I fixed a wonky plunge line on this skinner IMG_0869.jpegIMG_0867.jpeg

The inspiration for this thread was a comment in a different thread by C catspa about re-grinding his slip joints. Hoping he will post pictures here. Fingers crossed 🤞

So if you modify the grinds on your knives please post pictures b
 
I too have reground broken tips, as well as changed profiles many times. Putting a belly on a tanto was almost a mandatory for me. Here's an old pick of a zt0620cf blade that I sharpened a belly into. I also used this piece for corrosion testing but that's another story.

(this knife came as a tanto, zero belly at all) 20180220-130640.jpg
 
shinyedges said:
I too have reground broken tips, as well as changed profiles many times. Putting a belly on a tanto was almost a mandatory for me. Here's an old pick of a zt0620cf blade that I sharpened a belly into. I also used this piece for corrosion testing but that's another story.

(this knife came as a tanto, zero belly at all) View attachment 2675240
Click to expand...

Wow, great job there. I would've never guessed that started out as a tanto.
 
shinyedges said:
I too have reground broken tips, as well as changed profiles many times. Putting a belly on a tanto was almost a mandatory for me. Here's an old pick of a zt0620cf blade that I sharpened a belly into. I also used this piece for corrosion testing but that's another story.

(this knife came as a tanto, zero belly at all) View attachment 2675240
Click to expand...
You did a great job, got any other pics of it?
 
I reground and repointed an old saber ground Delica.


I thinned down the edge and reprofiled the tip so it didn’t stick out of the handle and nick my fingers. I used that thing hard and had already ground down the kick twice to let it close further and cover the point with the handle
 
scorpnsnake said:
That is gorgeous. Who was doing th sponto first, you or DHK?
Click to expand...
I definitely wasn't the first. I never saw the practicality of tantos for my uses since I'd use whatever knife was on me for pulling back straps out of deer which happened randomly where I used to live, so if I liked a knife and it was a tanto I'd give it a belly.
 
Hey, man. Never did get the knack of posting pics here, had a Photobucket acct about 3 phones ago but it went sour, can’t even access it now. Doesn’t help that I live in a dead spot for signal, sometimes I have to send a message 3 times before it actually goes through.

I did start a similar thread over on AAPK, however, and got a sample pic posted. If that’s illegal to mention here, I guess the mods will spank me. Sorry in advance if that’s the case.

Parker
 
me2 said:
I reground and repointed an old saber ground Delica.


I thinned down the edge and reprofiled the tip so it didn’t stick out of the handle and nick my fingers. I used that thing hard and had already ground down the kick twice to let it close further and cover the point with the handle
Click to expand...
How did you regrind the blade?
 
Robert Ptacek said:
How did you regrind the blade?
Click to expand...
I had to take the blade out of the handle. I have a grinding jig for my 1x30 HF belt sander that is 5 degrees. Nothing complex, just a couple pieces of wood I cut on a miter saw. I clamped it to the jig and went SLOW with an 80 then a 120 grit belt. I already had a good edge bevel, so seeing progress at the edge wasn’t too hard. I mainly wanted to thin it out at the edge and just guessed on the angle.

I didn’t try too hard to match the existing angle, which I missed pretty bad anyway. After regrinding I was able to rebevel the edge from 17 to 12 dps using just a 1000 grit King water stone. Increasing ease of sharpening and enclosing the tip were my main goals.
 
Blade regrinds can also be done by hand.
Sure a machine can do a much faster job, but it can also screw things up much faster.
For me regrinding by hand offers much more control of the process, plus there's zero chance of overheating the oftentimes thinner edges i'm after.

Just a few examples:

Antique NYKC Jack knife:
K

Post in thread 'Wooden Wednesday - Traditionals only please'

This antique NYKC Hammer Brand two-blade jack knife, made after 1885 but before 1900.
Both blades were hand reground to a shallow convex with a ~30 degrees inclusive microbevel.






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Buck Strider 881 mini tanto:
K

Photos Thread 'Buck Strider 881 mini tanto convex regrind'

For quite a few years this Buck Strider 881 mini tanto in BG42 steel was gathering dust in a drawer, as to me it was more a knife-like object, literally unable to cut anything.
Over the last few weeks i changed that with the help of my Tormek SB-250 stone (for the point area), a 300 grit diamond file, a Foss 7205 black/green silicon carbide stone, and some 400 grit wet & dry SiC paper on glass (for the straight edge)
The apex on the now full convex blade measures somewhere between 22.5 and 25 degrees inclusive, and i'm first going to do some test cutting to find out if i can safely lower...
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2 vintage Pontus Holmberg survival knives:
K

Photos Thread '2 Swedish Air Force survival knives'

Recently acquired these two fixed blades made by Swedish manufacturer Pontus Holmberg.
According to this website the model was once used as a survival knife for the Swedish Air Force:


I'm in the process of giving each one a bit of TLC, and will post some pics later on.

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You sure turned that old Hammer brand into a beauty. Were those the original swedges, or did you add them?

Parker
 
I like to think so too, and i carry & use this knife almost daily (often together with a Spyderco in another pocket)
The swedges were already on both blades, i just cleaned them up a bit.

In post #598 in this thread there are a few pics how the knife looked when i bought it:

ea42

Post in thread 'Antique New York Knife Company Knives and Company History'

kwackster said:
Today i bought this old 2-bladed Hammer Brand folding knife with a blue leather pocket sheath.
Now these knives are not exactly my field of expertise, so what i would like to know is the model name and the timeframe in which it was built.





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