Sharpening Mini Uncle Mojo.

[nozh2002]

As I reported before factory edge in my Min Uncle Mojo was just awful. On my thread cutting test it shows worse results among all other knives factory edges. It was 130g vs 60g for Currehee (which shows best results). HRLM shows 80, which is good.

MUM results:

80 +
90 ++
100 +++
110 ++++
120 ++++
130 +X+++
140 +++++
150 +
160 ++
170 +
180 +
190 +
200 +++

HRLM

70 +++++
80 +++++X+++
90 ++++++
100 +

It seems like quality control issue, because HRLM was sharpened good. However MUM has red sticker on it with "Inspected by B" or "by13" - whatever this mean, HRLM did not have red sticker as well as I remember.

Edge defenetly was troubled - it has very noticible line of chips on one side:

And looks rough. However I tested sharpnes away from this chips.

This is just can not be for such knife and I rush to fix it. initial angle on the edge was pretty big - this is big knife so angle should be big, but for this one it was too big. Plus edge is very thick 3/64" and it is recurved and it is SR101 - I try to fix it with diamond benchstone 400 grid - no way, it may take weeks. So I had to use belt grinder.

However even with edge angle being fixed this way it was impossible to me to sharpen recurved part on the stone edge - too thick and too hard steel, but thickness is the major problem because too many material to take off and stone edge can not handle it.

So on second day I desided to decurve blade, because I did not see very small progress. I used grinder again and straighten edge to be able to use full width of my diamond benchstone. Unfortunately I did decurvisation first time and miss the point that blade thicken near ricasso, so I scratch coating a bit at that area. But at that point sharpening actually start happening and finally I was able to resharpen it to proper edge:

I am not sure what happened and why this passed quality control and was shipped this way, but defentetely it is not what I expect from knife of this class and this price. I handle this myself, but it take me few days and I am kind of fully equipped and have some skills. Also I kind of surprised that my initial report was ignored.

I was impressed by SR101 - it seems pretty hard and wear resistant, I can recognize it in comparison with other knives. I think it is somewhere over 60HRC..

Thanks, Vassili.

 

[mhawg]

I'm glad you like the steel but don't EVER get near any of my blades!!!

PS: As Eric always proves, the purpose of this forum is to be friendly and informative. On that note I would like to remind you that customer service is #1 with SRKW and Busse products. There is nothing wrong with tinkering with the edge profile on these knives but if you think there is a problem let them know at the shop, cause I mean...DAMN! There I go again.

 

[Maqua]

My M6 had a rough edge, but it sharpened up easily. A diamond rod might have made sharpening the recurve easier on you. I used course through extra-fine DMT folding sharpeners on my Busse Muddy Mojo and the factroy edge is now refined to hair popping sharp.

 

[Eric Isaacson]

I am not sure what happened and why this passed quality control and was shipped this way, but defentetely it is not what I expect from knife of this class and this price. I handle this myself, but it take me few days and I am kind of fully equipped and have some skills. Also I kind of surprised that my initial report was ignored.

.

I'm glad that you got it sharpened to your Specs, looks like a wicked sharp edge now. I'm sorry it was not good when you received it.

Did you email me in regards to your initial report on the edge? If you did I did not receive it and I apologize. Email is the best and by far the fastest way to contact me if you ever have an issue with a knife I sell. While I read most of the posts on the forums I do not read them immediately and it is not the best way to contact me if there is an issue that I need to address.

If you need to contact me please email me at ratknives@insightbb.com and once again I apologize that the knife was not up to par when you received it.

 

[nozh2002]

My M6 had a rough edge, but it sharpened up easily. A diamond rod might have made sharpening the recurve easier on you. I used course through extra-fine DMT folding sharpeners on my Busse Muddy Mojo and the factroy edge is now refined to hair popping sharp.

I have Diamond Product 400 grid for reprofiling and restoring edge and 1200 grid for maintenance which I follows with 6, 1 and 0.3 micron diamond powders sprayed over leather. With 3/64" edge it is about week to resharpen edge using this stones only.

Spyderco 1200 grit (?) diamond rods will not help with almost 1/4" wide edge especially recurved, it will be month to get it fixed with sharpmaker rods. I get used to use benchstone edge for sharpening recurve edges, but this is not SpecBump, this it 3/64" thick SR101.

Factory edge was as you may see it on pictures so in this case it was not matter of refining factory edge, it was about getting normal edge.

Thanks, Vassili.

 

[nozh2002]

While I read most of the posts on the forums I do not read them immediately and it is not the best way to contact me if there is an issue that I need to address.

I do not see what you may address here I fixed it myself. However you should probably check you QA.

The only question came to my mind now is why this red sticker was on the blade - does it means that problem edge were detected - I do not remember same red sticker on HRLM?

Does anybody else has this "Inspected by..." red sticker?

Thanks, Vassili.

 

[clone7]

I do not see what you may address here I fixed it myself. However you should probably check you QA.

The only question came to my mind now is why this red sticker was on the blade - does it means that problem edge were detected - I do not remember same red sticker on HRLM?

Does anybody else has this "Inspected by..." red sticker?

Thanks, Vassili.

I see alot of Busse blades now have that on them so it looks pretty common.

 

[J33psru1e]

Wow, that's a mod and a half. Interesting.

 

[Eric Isaacson]

I do not see what you may address here I fixed it myself. However you should probably check you QA.

The only question came to my mind now is why this red sticker was on the blade - does it means that problem edge were detected - I do not remember same red sticker on HRLM?

Does anybody else has this "Inspected by..." red sticker?

Thanks, Vassili.

Thank you for the feedback. I'll let the shop know.

 

[leatherman]

edited: because apparently I'm a stupid hick

 

[Kraz]

Did you control the edge temperature when you were grinding? I would be worried that power grinding that much metal off could overheat the blade and weaken the steel temper.

If there is a next time, contact Eric and I'm sure he will get the knife serviced to your satisfaction.

 

[nozh2002]

I've gotta go with mhawg on this one, the edge being rough isnt a big issue. A crooked grind or an uneven grind would be, but a rough edge can be sharpened out. A total regrind like you did makes a rough edge a moot point dont you think?

Having my druthers, I'd much rather have a rough edge than the.... er .... I dont know quite how to put it....... butchered isnt a kind word is it? How much metal did you actually remove there bubba?

You'd have been much better served to have sent it back to the shop for a reprofile, muuuuch better served.

Well, HRLM has rough edge, but it cuts and has no damage on it. This one was almost dull - I post my sharpness test results in my initial post and clearly was damaged - see chips on the side. It was also non simmetrical and angle was far from right. So I did not done same for HRLM because it has edge - this one was not sharpened but more like abused on my opinion.

I did not take too much metal only straighten the edge which was not too much, only tiny damage I made is coating scratched near ricasso on one side, otherwise it is pretty accurate, of course this scratch is very visible. The fact that edge came up a bit near ricasso is due to increase of thickness.

I put about 15 degree or less on each side, but because edge was damaged initially and because it is 3/64" thick it turns so wide.

I never deal with customer service but for sure sharpening service and quality controm may need some improvement.

As a side comment - I do not think it is good idea to turn this on me, This is clearly bad edge and I think I post all proves - test + pictures, it is not just me like to "butcher" fine knife.

Thanks, Vassili.

Can somebody explain me what does bubba means?

 

[nozh2002]

Did you control the edge temperature when you were grinding? I would be worried that power grinding that much metal off could overheat the blade and weaken the steel temper.

If there is a next time, contact Eric and I'm sure he will get the knife serviced to your satisfaction.

Yes I did any I grind it slow taking of a little by little. I noticed that this is very massive blade so it did not heat too much. Grinding was just a initial fix, then I used mostly 400 Diamond benchstone and I can feel how hard steel is - I do not think I temper it.

Usually I can handle bad factory edge myself, but this one was hardest - mostly because of good steel plus huge thickness.

Thanks, Vassili.

 

[G19G26]

Nozh, I could splain Bubba, but it not be nice either.

 

[tedwca]

http://en.wikipedia.org/wiki/Bubba I'm sure it was meant in the most light hearted way.

Bubba is a relationship nickname formed from brother, given to boys to indicate their role in the family, especially the oldest male sibling. For some boys and men, bubba is used so pervasively it replaces the given name. The nickname may also be used outside the family by friends as a term of affection.

 

[nozh2002]

Nozh, I could splain Bubba, but it not be nice either.

Ok, I'll memorize it. Is the leatherman one who make leather sheath for Swamp Rats? Now for sure I will make only my own sheath for Swamp Rat, if it will be any...

Thanks, Vassili.

 

[Eric Isaacson]

Ok guys, there is no reason this thread needs to be hostile. Vassili was unhappy with the edge that was on the Mojo and he fixed it, I have no reason to believe that he is trying to harm us in anyway, he is pointing out a way that we can improve our operation and I respect that.

There is no reason anyone needs to be attacking him for his post. From what he indicates the edge was poor when he received that, and I don't doubt him on this.

He has a history of doing a fine job on his knives and sheaths and posting great pics and I appreciate that. I hope he continues to do this in the future.

It appears that the edge that is on the mojo now is a very fine edge and no doubt hair popping sharp.


Also, I don't think there was anything that was said that was meant to offend, however, the internet lacks all of the non-verbal cues that we have during normal speech and things can be easily misinterpreted.

 

[leatherman]

Ok, I'll memorize it. Is the leatherman one who make leather sheath for Swamp Rats? Now for sure I will make only my own sheath for Swamp Rat, if it will be any...

Thanks, Vassili.

Very nice fella, I'm not sure where you come from but where I am its a common term, ie "fellow" "friend" "bro" whatever. Take it how you want it but dont get personal ok?

G19G26, I thought you knew me better than that.

NO slight was intended, ah well, next time I'll just keep my mouth shut

 

[leatherman]

The nickname may also be used outside the family by friends as a term of affection.

Bubba has also developed into a proper noun, used as a term of endearment, to describe someone who is especially lovable,

Because of its association with the southern part of the United States, bubba is often used outside the South as a pejorative meaning low economic status and limited education.

This I have a HUGE problem with, here its a good thing, ouside the south its considered a stupid hick. Nice. I never knew that



I'm not even going to quote that last part, again, I had no idea and it really hacks me off that they put it in there. Wilkpedia is now worthless to me, I used to use them quite often, but when they print that trash, no more.


the first two are what I know Bubba as, not the last crap. Again, take it as you will, I cant change what y'all believe.

 

[markksr]

leatherman
glad you spoke up
i had a response re "bubba" half typed out then erased it cause i just dont have the patience
heck i call my son bubba