/diy/ - Do It Yourself

>>360522

you can regrind, probably, but do NOT let it get hot, it will lose the heat-treatment that makes the steel hard and retain an edge.

grind slowly, if it starts to turn blue it's too hot.

it should take half an hour or more, if less, you're going too fast and likely generating heat.

Ah, I've done this before.
What I did was put one of those cutting wheels on my dremel, then put it vertical in the vise. On low speed, I just ran the blade along the wheel to re-shape it. Do be careful not to get it hot, that will ruin it and it won't keep an edge.
Once you've gotten it looking good on the dremel, spend a while with a sharpening stone.

>>360559
So like using the cutting wheel like a small grinding wheel?

It's now that I realize I don't have a vice...

>>360571
Yes, because that's what I had at the time and it ended up working. You could use some sort of grinding wheel too, as long as it's not too coarse.
Move the knife, not the tool.

>>360581
think theres a way to work it without a vice?

As said, do not let it get hot. Dip in water every few seconds, and I would work from the spine of the knife, not the blade.

As for holding the knife down....a couple of C-clamps should do the job. I'd clamp it to a 2x4 that's clamped to a table so you have the blade vertical so you can make it even.

Don't use a dremel. Don't. Don't don't don't don't don't.

You people should feel bad for encouraging this behavior.

You can reshape the tip and sharpen it with a whetstone. Shouldn't take much more time than an hour of television. Don't use a dremel.

i guess nobody uses metal files to shape metal anymore.

keep the tip the way it is. makes a god make shift flat head screw driver and it also wont get stuck in your enemies bones when you stab ther

Just cap off the tip with a rubber ball. Safety first.

>>360664

5 minutes on a bench grinder and you'll have a new tip on it.

Then you just need to sharpen the blade with a wet stone or ceramic knife sharpener.

>>360612
By which you mean "never, ever, ever did"? The oldest worked blades made by man were sharpened on stone. That's all this is.

>>360684
And a completely fucked knife. You know nothing about metal.

>>360522
Drum sander, make sure that it sands outwards towards the tip. Tape up the blade too to minimize injury.

>>360551
Just keep a cup of water and a dry rage nearby.

>>360559
>>360571
Cutting wheel is a terrible idea.

>>360593
You should buy a vise.

>>360610
No, that is retarded. I do all my profiling with power tools, specifically a belt grinder. You can ruin a whetstone trying to reshape very damaged tip.

>>360612
Files will skip on a well hardened blade. Some softer blades like machetes can get away with filing.

>>360614
Brilliant

>>360664
Double brilliant

>>360684
Try like 30 seconds.

But seriously, like the other guy said, work the spine down to the tip, not the edge up to the tip.

>>360705

A drum sander.

And you call my idea retarded.

>>360702
>And a completely fucked knife. You know nothing about metal.

It's a cheap old pocket knife, not a prized hand forged Damascus blade you fucking moron. A bench grinder and wet stone will be fine to put a functional tip back on it.

>>360728
It's still tempered steel. Over heating it will destroy the edge.

>>360522

no one said dremel is the right tool fo rthe job; OP said they had a dremel. it is in fact not a particularly good tool for this, but sometimes, you gotta work with what you got.

or i suppose you could just POST IN A THREAD! and say shit that's negative.

files won't work on hardened steel (very well). hence, carborundum (fkn look it up).

illegitimi non carborundum

For those saying not to use a dremel, can you give me more details why it's such a bad idea? As long as I'm careful about keeping the heat down, what's the difference?

>>360732
So he dips it in water every few seconds. You know nothing of metal working. And destroy the edge? No, hitting it on things destroys the edge. Over heating just makes it brittle.

>>360732
Just retemper it.

go rub it back and forth on the sidewalk

Why not just clean, re-sharpen and call it a day? It will work fine without that fancy-dan tip.

OP, I make knives for a living, you don't know how many ppl bring me their broken knife, then go and ask me to fix the blade. If you use a grinder, then do it in very short times. This will keep the metal from heating up to the point of fucking it up. If you really don't want to deal with so much trouble of worrying about fucking up the blade etc. You can just take a file, work on that broken tip just a bit, then have a flate head screw driver / knife.