SR-101 Chips

Something that I have been worried about on all my sr-101 blades is chipping. And again today chopping some camelthorn wood my 1111 chipped, both my regulator and 911 had the same results. All three knives have a 17dps edge angle with a 25dps micro bevel. I feel that the knives should be able to handle this but they just can't. Any input from you guys?

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I had some chips on a 1311 on some elm and hackberry but the 1111 didn't blink. I had it set at 20 degrees per side, no micro bevel.

My 1311 is my most used knife for Yardwork and it has a few chips that size. All the rest of my user Scraps and Swamps are fine though. I have Brutalized my HRLM and it is clean. All my Bussekin have their factory edges though, I can sharpen, but haven't reprofiled anything yet

MM

Tried the same with my regulator. And chipped in the same way.

Sad to hear. I have beat my Regulator bad and have tried to destroy the tip but nothing happened. I have battoned with it and its still clean...

MM

My Chopweiler laughs at puny blades that chip !


By pitdog2010 at 2011-03-04


By pitdog2010 at 2011-07-22

Say what you will, but I think there was something about the dif heat treat that the newer blades can't touch.

I've had the same results with my Chopweiller. Took me two years abusing it before it lost its shaving edge. It laughs at all my other blades.

I have seen this exact same conversation on Facebook and other forums.
My 911 has chopped, battoned, been thrown and much more and it factory sharp over 2 years later. I haven't used my 1311 set but I need to. I don't think the SR101 performs the same as the old yard SR77 or infi. Also I think the convex edge seems to be the ticket for tough work.

I'm just a little frustrated because it does'nt seem to have enough edge stability/toughness for lower edge angles. I will do more testing and see what happens.

Test away. Worse comes to worse PM Renee and she can help you out if you need a warranty claim.

I thickened the edge on the regulator a bit and it seems to be stable. Chopped into a hard knot about 20 times. With a slight edge bend. Quickly fixed. Seems ok.

Guys, it's not a question of how well your XXX SR-101 knife holds up if it's got factory edge geometry when the OP is talking specifically to lower edge angles.

What needs to be asked is how was the edge sharpened…. i.e. power tools?

Also…. are you sure it is actually at 17 dps and not lower?

I get better edge toughness out of SR77 vs SR101. I am sure that I have seen tests that report that also. I seem to remember seeing something about brittle edges chipping and then improving after repeated sharpening. That said, I prefer SR101 for the ability to take and hold a slicing edge.

I haven't seen any chips but on the simple carbon steel machetes that I use often, the chip doesn't seem to affect performance at all.

My thinned out battle rat has taken beatings and the worst it's shown is mico damage. I think Horn Dog thinned it out on his belts.

I have been using lansky since 2006. I'm not sure if it really is 17dps but yes i am using the lowest angle which show's 17 but that's probably just a indication.

You might look into using trigonometry to actually verify the edge angle, I wish I could tell you how but I'm a bit challenged for trig right now, lol.

How many times have the blades in question been sharpened? Reason I ask is it seems to take several sharpening to get rid of the bit of weakened metal at the apex from belt grinding the edges at factory.

I'd recommend removing the chips if at all possible and resharpening at the same angle and repeating just to see if it's happening consistently with similar chopping use.

It took a lot of doing but I managed to get a idea of the edge angle and it seems to be between 15-16dps. Edge seems to be more stable now. The problem is it happened on both my regulator and 1111. It's a pitty that one needs to resharpen a knife several times to get performance from it.

It's actually incredibly common with production knives actually, most people just don't have a clue about it. It may also have something to do with the blanks being cut by a laser….

I chipped an edge today but I blame it on the rock that I hit.

I picked up a magnetic angle guide for my KME, found out I was WAY off on what some of my angles were. I bought one for $15 that's supposed to be used for angling wheelchairs at specific angles, works great.

12 bucks on Amazon.

Anton, as a quick question, would it be possible to you to run a side by side comparison of another knife which doesn't chip on the same type of wood while you are using the one that does chip and see if :

-the SR101 knife chips again
-the other one doesn't

If this happens, continue using the other knife that didn't chip for say the same length of time again to see if it chips as well.

Welcome to the Yard, Cliff! Looks like you've been saving that first post here for a while now, eh?

Cliff, Howdy and Welcome to the Scrap Yard!

Wow..... Cliff Stamp. Welcome

I will try get some 5160.

Cliff
If memory serves me
You are Canadian correct?
If so maybe we can set up a test of my 1311 with you

Good idea....

Anton, so just to clarify the edges stabilized for you after sharpening away some of the metal at the apex?

Yes, it seems like it. One have to also make sure to form the apex properly and get rid of the burr.