‘Carbides in Maxamet’ article in the Scienceofsharp

[Ankerson]

I've talked to Jim on the phone, I ordered a Congress moldmaster stone.

I have a square piece of CPM 10v

I'll grind it both sides, sharpen one side with an atoma 400grit, the other side with a 400grit Moldmaster SiC.

Then I'll send to Catra

Should be VERY close.... :)

You know how to sharpen.

[Deadboxhero]

I've talked to Jim on the phone, I ordered a Congress moldmaster stone.

I have a square piece of CPM 10v

I'll grind it both sides, sharpen one side with an atoma 400grit, the other side with a 400grit Moldmaster SiC.

Then I'll send to Catra

Should be VERY close.... :)

You know how to sharpen.

We'll send down some 15v for testing to ya Jim.

Also, I'm getting some s45vn, I'll send some when it's up and running.

The edge pro diamond matrix resin bonded stones are something you would like if you got a chance to try the 220 and 660 grits we'll see if I can get some.

[Ankerson]

I've talked to Jim on the phone, I ordered a Congress moldmaster stone.

I have a square piece of CPM 10v

I'll grind it both sides, sharpen one side with an atoma 400grit, the other side with a 400grit Moldmaster SiC.

Then I'll send to Catra

Should be VERY close.... :)

You know how to sharpen.

We'll send down some 15v for testing to ya Jim.

Also, I'm getting some s45vn, I'll send some when it's up and running.

My arm is already hurting just thinking about it.... 15V... :eek:

[Deadboxhero]

I've talked to Jim on the phone, I ordered a Congress moldmaster stone.

I have a square piece of CPM 10v

I'll grind it both sides, sharpen one side with an atoma 400grit, the other side with a 400grit Moldmaster SiC.

Then I'll send to Catra

Should be VERY close.... :)

You know how to sharpen.

We'll send down some 15v for testing to ya Jim.

Also, I'm getting some s45vn, I'll send some when it's up and running.

My arm is already hurting just thinking about it.... 15V... :eek:

Haha we'll see what happens, like you say, never know without controlled testing :D.

Might be a lot of rope

[Ankerson]

Should be VERY close.... :)

You know how to sharpen.

We'll send down some 15v for testing to ya Jim.

Also, I'm getting some s45vn, I'll send some when it's up and running.

My arm is already hurting just thinking about it.... 15V... :eek:

Haha we'll see what happens, like you say, never know without controlled testing :D.

Might be a lot of rope

Well unless you completely blow the HT it will cut a lot.... :D

I am guessing you will do some testing before I see it to make sure...

[Deadboxhero]

We'll send down some 15v for testing to ya Jim.

Also, I'm getting some s45vn, I'll send some when it's up and running.

My arm is already hurting just thinking about it.... 15V... :eek:

Haha we'll see what happens, like you say, never know without controlled testing :D.

Might be a lot of rope

Well unless you completely blow the HT it will cut a lot.... :D

I am guessing you will do some testing before I see it to make sure...

Haha you know me

[Ankerson]

My arm is already hurting just thinking about it.... 15V... :eek:

Haha we'll see what happens, like you say, never know without controlled testing :D.

Might be a lot of rope

Well unless you completely blow the HT it will cut a lot.... :D

I am guessing you will do some testing before I see it to make sure...

Haha you know me

Yeah, that's what I was thinking.

Don't want something that the edge falls apart on me, that's for sure.

Had that happen before....

[Pelagic]

Pelagic, there’s actually some interesting posts on the blog, where Simpson demonstrates how a straight 325 grit DMT plate can achieve a smooth shaving finish. I’m guessing the low corrosion resistance might be an issue, but have you tried Maxamet out on the boat? I’d guess it’d be a fierce cutter with a coarse diamond finish on those synthetic materials you deal with.

"Smooth" is a relative term. I can achieve a hair whittling edge with a DMT 325 grit stone, so yes it will shave quite readily, but I'd much rather take it higher and eventually polish the apex.

Unfortunately my only Maxamet experience is sharpening someone else's Mule team. I'm just saying, especially with a matrix that hard, I'll get much more slicing aggression from a coarse finish than I would from finishing on 8k alumina based abrasives to expose carbides. The carbides have little influence on the edge finish I use.

[Cambertree]

"Smooth" is a relative term. I can achieve a hair whittling edge with a DMT 325 grit stone, so yes it will shave quite readily, but I'd much rather take it higher and eventually polish the apex.

Unfortunately my only Maxamet experience is sharpening someone else's Mule team. I'm just saying, especially with a matrix that hard, I'll get much more slicing aggression from a coarse finish than I would from finishing on 8k alumina based abrasives to expose carbides. The carbides have little influence on the edge finish I use.

Yeah, in this context I think ‘smooth’ is taken to mean the edge gives a non-irritating face shave with a straight razor. Although, there’s different standards of that kind of ‘smooth’ as well, of course.

Yeah, I agree - a coarse Maxamet edge would no doubt give more slicing aggression.

I’m intrigued though as to how that 8k finished edge with the protruding carbides would feel and act in the cut.

I've talked to Jim on the phone, I ordered a Congress moldmaster stone.

I have a square piece of CPM 10v

I'll grind it both sides, sharpen one side with an atoma 400grit, the other side with a 400grit Moldmaster SiC.

Then I'll send to Catra

Very cool, BBB, looking forward to seeing the results.

Can I ask why you chose the Atoma 400, instead of an equivalent grit size bonded stone?

Something I’ve been meaning to ask you as well - do you notice any difference between CBN and diamonds in fine edge finishes?

[GarageBoy]

What advantages does a Congress moldmaster have over a Norton Crystolon?

What steels are Aluminum Oxide stones (i.e. Norton India) good up til? S30V?

[BR549]

Any results from the testing?

[sal]

Hi BR549,

Welcome to our forum....madhouse that it is.

I think, therefor I am.................sharp. :p

sal

[sal]

Hi Cambertree,

Great link and source. Thanx much. Very informative.

We're working on a straight razor with Dr. Mike Blue. Mike, Howard Clark and ed Schempp are my mentors on heat treating the razor in Bainite. Once we get going, we'd like to try straight razors in other materials. It will be interesting to connect some of the straight razor afi's with the blade afi's here.

sal

[BigKenbo]

Hi Cambertree,

Great link and source. Thanx much. Very informative.

We're working on a straight razor with Dr. Mike Blue. Mike, Howard Clark and ed Schempp are my mentors on heat treating the razor in Bainite. Once we get going, we'd like to try straight razors in other materials. It will be interesting to connect some of the straight razor afi's with the blade afi's here.

sal

Exciting news Sal!

[Cambertree]

Hi Cambertree,

Great link and source. Thanx much. Very informative.

We're working on a straight razor with Dr. Mike Blue. Mike, Howard Clark and ed Schempp are my mentors on heat treating the razor in Bainite. Once we get going, we'd like to try straight razors in other materials. It will be interesting to connect some of the straight razor afi's with the blade afi's here.

sal

Thanks Sal!

I’m always fascinated to see those scanning electron microscope images of knife edges and different steels and abrasives. I found it helped to refine my sharpening technique to be able to visualise what was going on at the edge from those kind of images.

Yes, I’ve been very interested to see the progression of that straight razor discussion to an actual project.

The bainite heat treatment experiment sounds intriguing, as do the use of different steels in those thin, acute edges.

I visited a famous kamisori maker in Sanjo in 2014, and I was quite surprised that he said that he actually used a 1.25% carbon steel from Sweden, instead of Shirogami 1 (White paper 1) steel for his razors.

I suppose the steel would have been something like 125SC.

http://www.zknives.com/knives/steels/st ... p?nm=125sc

[Cambertree]

Hey Shawn/Deadboxhero,

I know you’re a busy man, but I’d love to see the outcome of those experiments with diamonds vs silicon carbide sharpened edges, whenever you can find the time bro.

Thanks!