pmartinknives

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@thealarmclock9307 2 жыл бұрын

So , how good is the edge retention on that bendy , knife shaped , noodle

@voltsoftruthBSbuster 2 жыл бұрын

Whats the hardness on the blade you were flexing back and forth? The reason I ask is I've seen a lot of makers temper their blades to less than useful hardness im talking low 50's high 40's for demonstrations. Basically giving the steel spring temper, and then show how the blade can flex to 90 degrees. But thats not an honest representation of how the knife or steel will perform when its treated to a Rockwell thats more ideal for daily tasks a real knife would be put through. One maker on KZbin had videos of how his 1095 was even tougher than 5160, showing him flexing his 1095 blades beyond 90 degrees and the blades would spring back. (Take a 10 degree set), but still spring back, where his 5160 blades would snap somewhere between 70 degrees and 90 degrees. Im was impressed. But later found out his 1095 was tempered to 45-47rc, where his 5160 was tempered to 55-57rc. So clearly 5160 was light years tougher being able to flex to 90 degrees at 57rc vs 1095 needed to be at mid 40's. When he heat treated his 1095 to 57rc it snapped at around 45 degrees. No one sells knives tempered to 47RC, because the blade would be next to useless. I have a Kukri with a belly tempered to 45rc, but the edge is 60rc. Ideally I'm not a fan of differentially treated blades cause its hard to get it right. Typically the spine is left too soft edge too hard and first time it is subjected to lateral impact, the spine bends, the edge can't bend as far thus breaks, destroying the entire knife. But my Kukri is half an inch thick so even at 40rc you can't bend it. Still even heat treatment, is far superior if you temper it right and give the blade some springeness, so during an impact it can flex (not take a set) spring back to original without cracks, breaks or bends. But to my original point, the typical functioning Rockwell for most uses is between 55-60rc depending on the steel. So was the blade you tested in a vise heat treated to usable Rockwell or was it kept low so it would bend and not snap in the vice. Not acusing you of anything im just curious if that was a demonstration for learning purposes or real representation of how finish product would behave.

@pmartinknives 2 жыл бұрын

look up the process to make Bainite, 1095 steel RC58-59 and extremely flexible.

@arsalangooshvar4567 2 жыл бұрын

Hello Martin I saw a video of testing a knife , cutting a nail ... may I know what material do you recommend to have harden and make a knife to be as good as the one , you tested Thank you for videos

@pmartinknives 2 жыл бұрын

I used 1095 tool steel for that knife

@housevollmer9106 2 жыл бұрын

I don’t think that bendy knife is quite hard enough, I’d dial that temper back 1 cycle maybe for a harder knife with better edge retention...

@xenalincil9500 3 жыл бұрын

Bullshit, you people are so secretive, why don't just share the detailed heat treatment process, if you don't wanna answer viewers' questions, why making that damn video?

@garethbaus5471 2 жыл бұрын

He described most of the process in a reply to another comment. It is a bainite heat treatment, the process isn't capable of getting quite as hard as tempered martinsite, but results in exceptional toughness.