The NEXT SALE

Status
Not open for further replies.
Nathan the Machinist said:
Our next sale will be 10 ninja swords

We have about 30 swords remaining from a heat batch that was exposed to oxygen at the wrong part of the process that resulted in some surface decarburization

At temperature, carbon flows through the iron metallic crystalline matrix like water in sand. It's not actually reacting with the iron atoms. The mechanism that makes steel hard is literally just carbon getting trapped between the iron atoms that make up the metallic crystals. At temperature the iron is a face center cubic crystal and at room temperature it is body center. At high temperature the carbon flows between these atoms while they're spread out and physically gets stuck as they try to move back, causing strain. This is the mechanism that makes steel hard. Other mechanisms like crystalline dislocations caused by precipitation make other metals hard, and there is some of that in steel, but by in large it is martensite.

However, at the high temperatures that this steel is processed at, if there is oxygen present that carbon simply combines with the oxygen to make CO2 gas. They are specific steps in the heat treat process where the steel is at very high temperature and is highly susceptible to decarburization. Due to the challenges presented in processing this steel in a sword, we ran into some difficulties with one heat which resulted in decarburization of 32 swords.

Historically, a wakizashi sword might be hard in the middle and clad with soft steel, so, ironically, this flaw makes the sword more period correct. But it also makes it easier to take a set because the skin has a lower yield point than the core.

We are auto grinding the flats to remove the decarb, and setting the edge back to remove suspect steel from near the edge and we are working on some techniques to reprocess the primary grinds to at least reduce the presence of the affected steel

It looks like we have enough good swords to fill the pre-order, with a couple left over. However I am not selling any of those until the pre-order is complete. However we have 30 of these that I'm going to reprocess into a ninja sword and offer for sale in batches of 10.

Our next sale is for 10 "ninja swords" wakizashi. These are in process now. I will firm up a date once I have a better feel for when they're going to be ready.
Click to expand...
I got excited at "10 ninja swords", but now my head hurts 🤯🤕
 
Nathan the Machinist said:
Our next sale will be 10 ninja swords

We have about 30 swords remaining from a heat batch that was exposed to oxygen at the wrong part of the process that resulted in some surface decarburization

At temperature, carbon flows through the iron metallic crystalline matrix like water in sand. It's not actually reacting with the iron atoms. The mechanism that makes steel hard is literally just carbon getting trapped between the iron atoms that make up the metallic crystals. At temperature the iron is a face center cubic crystal and at room temperature it is body center. At high temperature the carbon flows between these atoms while they're spread out and physically gets stuck as they try to move back, causing strain. This is the mechanism that makes steel hard. Other mechanisms like crystalline dislocations caused by precipitation make other metals hard, and there is some of that in steel, but by in large it is martensite.

However, at the high temperatures that this steel is processed at, if there is oxygen present that carbon simply combines with the oxygen to make CO2 gas. They are specific steps in the heat treat process where the steel is at very high temperature and is highly susceptible to decarburization. Due to the challenges presented in processing this steel in a sword, we ran into some difficulties with one heat which resulted in decarburization of 32 swords.

Historically, a wakizashi sword might be hard in the middle and clad with soft steel, so, ironically, this flaw makes the sword more period correct. But it also makes it easier to take a set because the skin has a lower yield point than the core.

We are auto grinding the flats to remove the decarb, and setting the edge back to remove suspect steel from near the edge and we are working on some techniques to reprocess the primary grinds to at least reduce the presence of the affected steel

It looks like we have enough good swords to fill the pre-order, with a couple left over. However I am not selling any of those until the pre-order is complete. However we have 30 of these that I'm going to reprocess into a ninja sword and offer for sale in batches of 10.

Our next sale is for 10 "ninja swords" wakizashi. These are in process now. I will firm up a date once I have a better feel for when they're going to be ready.
Click to expand...


What is the base price going to be for these 30 ninja swords, or approx price each?
 
tknx said:
Any good pics of the ninja sword and some of the other models. Paged through the insta a bit but wasn’t sure. And the website definitely seems behind.
Click to expand...
No full pictures of the Ninja sword yet, but there's a great sticky.

CPK Encyclopedia

CPK Encyclopedia Basic Field Knife BC – Behemoth Chopper Behemother Boot Dagger Competition Chopper DEK1 DEK2 DEK3 Double-Edge Fighter EDC / EDC1 – Every-Day Carry EDC2 EDC3 FK – Field Knife FK2 – Field Knife 2 (AKA UFK) HC – Heavy Chopper HDFK – Heavy Duty Field Knife HDMC - Heavy Duty Medium...
www.bladeforums.com www.bladeforums.com
 
Status
Not open for further replies.
Back
Top