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Working on something strange....



I'm planning for a copper guard on the main hub/handle and copper pins holding in the blades to the hub. The blades and the hub are low layer damascus and the wood is stabilized birch.
Strange indeed! What is the application for such a device?
 
Working on something strange....



I'm planning for a copper guard on the main hub/handle and copper pins holding in the blades to the hub. The blades and the hub are low layer damascus and the wood is stabilized birch.
I'm hoping this shows up in a video. Because that picture is not enough information lol.
 
nNWOk3w.jpg
 
I finished the construction of my “budget” 2x72” grinder build. I set a budget of $1500. It’s been a lot of fun:


With a few upgrades, like a combo platen with 2” & 6” contact wheels, and a 6” drive wheel, I’m at less than $1350! I have a few more add-ons to share, but it’s ready to make blades!
 
Pre heat treat or after heat treat with your sunken areas?

Curious how that is with stresses

Thanks
this is how it was out of the oven. Most of the recurve was ground in before ht
s50xPa1.jpg

there was a bit of a wow out at the tip, but between temper straightening and grinding it be gone
 
this is how it was out of the oven. Most of the recurve was ground in before ht
s50xPa1.jpg

there was a bit of a wow out at the tip, but between temper straightening and grinding it be gone

Ok, thanks. That is throwing a wrench in my thoughts that blade thickness needs to be consistent as to not induce stress fractures, or something.
You proved me wrong

similarly, I was under the belief that a feature like a saw back on the spine is best done After heat treat?

PS.... the top two blades look Sweet!
 
Ok, thanks. That is throwing a wrench in my thoughts that blade thickness needs to be consistent as to not induce stress fractures, or something.
You proved me wrong

similarly, I was under the belief that a feature like a saw back on the spine is best done After heat treat?

PS.... the top two blades look Sweet!
I think one of the main reasons you don't want to finish a knife to much before ht is if you have decarb and get some pitting or whatever. Not a problem when you send your blades away and they're done in a vacuum oven, as per past experiences. I build a 3V knife and tried to reduce the atmosphere as much as possible in the envelope by squeezing out as much air as possible, but ended up having to grind bits of the envelope which stuck to the steel. A couple of these aebl knives got some pretty bad decarb and I figure it's because there was just too much empty space in the envelope. Delicate balance, I suppose.

I have tended toward a lot of hand work, and for that it's much easier to do before ht. Never done saw teeth before but that strikes me as a pre ht job, since it would be really easy to overheat those tiny points on a grinder after ht
 
Sooo... REALLY excited! I just got a coal iron works 12 ton forging press! I've set it up and had some time to use it.
And I'm very impressed! although it's not the most powerful thing, it does do a very good job! and it beats the heck out of doing everything by hand.
 

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