Making a new tip

G

Giunta

Joined
Aug 8, 2006
Messages
46
Hi all,
I dropped my knife and broke the tip off today and was just wondering how I'd fix it. I have access to a wet stone sander/grinder? Not sure what it's called but it's at a cabinet maker's factory and they use it to sharpen woodworking chisels. I'm not a knife expert so I wasn't sure what would be the best way to fix it. Below are some pics that I drew up.

Bottom grind

This one makes sense. I'd adjust the angles properly, the pic is just showing which place to grind from.

Straight grind

This one looks simple to do and might give the blade a mean double-edged look.

Top Smooth

I was thinking of doing it this way but it might be taking way too much off the blade.

Top Curve

This is probably the most likely one. The grinder I'm using has a 10cm radius so that curve would probably be the shape of the wheel. I'd imagine this would be pretty easy. I'm just worried it'll make the blade look a bit cheap because that curve looks really out of place and doesn't flow.


What do you think? Any tips or hints are appreciated. I haven never even sharpened a knife let alone grind a new point into it so is there anything important to look out for?


Thanks, Giunta.
 
The 2nd one will be the fastest/easiest and I think the 3rd would be the best if you want to take the time to remove all that steel. The first one probably won't end up looking the same trying to match the edge bevel to the one already on it and the 4th one would end up looking strange. If you have a Home Depot near you they carry a Norton double sided stone that you could use. Take your time with it and all should turn out well, good luck :thumbup:
 
Thanks for the info. powells, I went with choice two. Turned out quite nice, PM if you wanted pics. :)
 
When do you concider your knife needs sharpening? I usually re sharpen when my knife no longer grabs and cuts, but rather starts to slide rather than slice. The blade usually at this point will not quite shave hair off of my arm, but rather scrapes it off at this point.

Then I sharpen it with a steel or ceramic rods, caught early enough just a maintenance sharpening on the steel or rods is enough, otherwise it is back to the belt grinder, or to the stone when out in the bush.
 
Giunta:
The top illustration, labeled 'Bottom Grind' will produce a stronger tip. You'd loose the needle-like penetration, but you'd not likely break the tip again.

Hope this helsp!
 
I was worried about keeping a consistent bevel with the first pic and loosing too much of the blade with the 3rd. I guess it worked out ok.... it still cuts. :D


Bufford - Make a thread didn't work.
 
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