regrinding broken knife

steelswing

steelswing

Joined
Jan 28, 2003
Messages
888
I have a Cold Steel Gurki light. Well about the middle of the blade about an inch and a half broke out. Do you think it's possible to grind it down to a knife agin will this affect the heat treat?
Thanks
Bob
 
If its uniformely hardened now, all you have to do is keep from overheating it while you grind. Make a pass, and dip...repeat as necesary.

If its differentially tempered, then grinding away alot of material might get you back into a section thats too soft. In which cse you want to re-heat treat it.
 
Regrinding is probably fine, and if you want to make a project out of it thats cool.
Its just that Cold Steel really pushes their product as being extremely tough so for your money they should stand behind it. I don't remember what the warranty is like, but I doubt you need a receipt if you work directly with Cold Steel, the knife should be all the proof you need ;) Alot of other companies would give you a replacement no questions asked.
 
Originally posted by Matt Shade
...with Cold Steel, the knife should be all the proof you need...
Click to expand...
subtle, but very nice indeed...! :eek:


I've reground at least a hundred hardened blades. Of course, they're a bit better quality than CS and I know exactly where it's been hardened...

But, what do you have to lose?

Just keep the blade cool (should still be able to touch it and go "ouch"...rather than touch it and scream "OUCH!!!" :D)
 
Like said before, find out if it is a full quench or differential. Don't let it get hotter than about 400 F. while grinding.

RL
 
Do it bare handed, if it is too hot to touch, you know you are getting too hot. Dunk it.
Also, I have reground some blades that were CS Carbon V. All were fully hardened, and all were hard enough to ruin a file. (I am going to make blades out of those files once I get a place for a bench grinder.) The trick is to go slow, (And from experience, never use a dremal tool for anything but the most basic rough grinding/shaping.)

Good luck.
 
SamariDave you love by my Grandma I love it there!!!
Sorry I have to ask this question I'm new should I quench in oil? New or used and if not oil what? I think I will give them a call It's been broke for about 2 years but I recently found it, like you guys said worth a shot I know Benchmade would replace for the shipping cost.
Peace and Thanks
 
You quench in oil only if you are tempering the blade. You dont want to get that hot, that is why you do it bare handed. You only want to keep the blade cool to the touch.

Go slow with the grinder, quench in water, then afterwards be sure to oil it to keep the rust in check.
 
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