could you send it back in to CRK and see what their suggestion is? I have bought a old carbon german made blade with a bent tip and hammered it carefully back to shape with success...but with a complex steel I dont know how it would react, you could crack it knocking it back, what RC is this model heat treated to?
it's heat treated to 58-59 RC. Good suggestion to contact CRK, thanks
Ordinarily, the first thing I'd do is get in touch with Chris Reeve Knives. Even if this isn't covered under their warranty (I'm betting it won't be), I still think it's worth finding out if they will fix it for a reasonable price. They do have a reputation for making 'em like new when folks send 'em in for refurb. Being that you're outside the U.S., it's going to be up to you to decide if the extra shipping costs & Customs delays are worth it.
Otherwise, it does look like it'll need reprofiling at least. Don't know if it's worth trying to bend it back, that tip will likely be weakened anyway. The steel's likely going to have to come off. Might just get your XXC diamond stone and start grinding that bent tip away, then refine it & finish it off. Take your time, go about it gently. No need to take any more steel off than is absolutely necessary.
By the way, anything with electronics in it (motherboard, chips, etc.) will always be very tough on any knife blade. Motherboard is, after all, made with several layers of highly compressed fiberGLASS, metal & resin. Chips are made with silicon (again, GLASS). Chips that produce a lot of heat (CPU & video processors, power supply regulators) are usually encased in CERAMIC. And you will find the occasional metal/steel 'stiffeners' affixed to the chassis in strategic places to keep everything from bending/flexing too much (except, of course, an intruding knife tip
).
Chalk this one up to Karma, a lesson learned...
yup, lesson learned. I'm wiser now
I'll won't try to operate on motherboards with their steel invasion defensive system again.
shipping is expensive to the US from the Netherlands and back. I'm going to fix it myself or with some help of some dutch knife friends.
I like my Umnumzaan, but I have never really loved the tip. It is not a splinter picker, but does not look to be super stout either. I am not sure what the goal was in that design, but suffice to say it is not my favorite part of the knife. When I damage mine like yours (I think it is a matter of time before it happens for me), I think I will modify the tip to basically grind out the bent portion so that it is thick and chisel-like at the tip.
This will in effect make the knife a bit more like the "spanto" (spear/tanto).
That is my 2 cents...
I'm thinking about trying to 'spanto' or tanto it. But only if all else fails. I'm not sure the tip of the umnum is weak perse, but I agree it's thin and of course the evidence is in front of me, the tip bent.
I'm certain Chris Reeves can repair that for free. They refinish and sharpen their knives for the lifetime of the knife. Great deal.
I'm not sure about the free part of it...
I stick the tip of my bent knives in a wood block and cairfuly bend it the oposit way till its strait.
I would need hard wood and the wood would not produce scratches, it's a good trick. I used it on a cheap cold steel machete last week at my easter trip (not on the tip, on the whole blade)
This is why I prefer the blade profile on the regular Sebenza over the Classic. I had that happen on a Classic and ended up grinding off the tip with stones which made it a lot stronger at the tip.
I would also recommend checking with Reeve and see what they recommend. I would guess that they would either charge you to replace the blade or regrind the tip.
Yeah, replace or repair, that's basically it. So I'll try to repair it first
yeah, I got that already Bill. The question was, what is the best way to do that
leave it... it adds some character
nah, it adds danger in handling the knife. But I guess that's where your name comes from
trying to bend it back could cause the tip to break if done wrong. i have managed to get a few bent tips straight again but its tricky. i would contact chris and see what he has to say first before attempting to straighten it yourself.
Yeah, that is a concern of mine, breaking it.
But actually, I have just bent it back by putting the tip in a vise and slowly putting some pressure on it. It went really well, no stress on the tip, the blade felt kindof flexible.The tip is now straight as far as I can tell. After bending it back I stabbed in a block of wood with a fair amount of force, 5 times in total. No problem on the tip. prying in wood also went well. No problem on the tip.
I took a baco file and filed off the rolled over part of the tip, there's only a little bit left on the tip that is rolled over. So now it looks ok again, but of course, I lost a piece of the tip.
I'm starting on the rest of the restoration process right now, I'm using a dmt diafold Coarse to begin with. I'm taking it slow and will see what happens.
I also checked the teletubbies machine and I actually hit a thick piece of very hard motherboard and I feel that was most definitely the culprit. I finished the mofo off with my machette :thumbup:
thanks so far guys. I'd welcome any suggestions you have for me.
here's some pics of how it looks right now.
