Spoon/Fillet out of CPM 154 CM?

[RyanW]

I am dabbling in new territory... CPM154

I have a good customer in Alaska that is asking for a Large Fillet Knife with a spoon on the butt to scrape the blood (Kidney?) from the spine. He has requested it in CPM 154. What is the best way to shape the "Spoon/Scoop" on the butt. Can I just lightly shape it with a hammer or press? for is grinding the bevel in the best option?

The spoon doesn't have to be deep just curved.

Here is an example of one from Kershaw I found online. Just to get an idea of what I am talking about.

 

[james terrio]

CPM-154 is excellent steel, but it's not a good candidate for hot forging. I suppose you could cold-forge the spoon on the end of that design to some extent, if the stock is thin and annealed. Since it doesn't need to to be deeply shaped, I would do most of the shaping with a rotary tool.

 

[mete]

I thought of that too but I'd try some heat but not to critical temperature .

 

[Matt Brook]

Hey Ryan,

I also like 154. Nice steel to grind and finish.

Why dont you make the blade out of 154, and buy a stainless spoon and join them under the handle scale? Im sure you could weld them and put the same finish on the spoon as the blade. As long as you told your customer and he was happy with it.

Matt

 

[RyanW]

Thanks everyone for the input.

James - I will try to cold forge it a little bit, It is annealed and pretty soft as it sits. I call be able to clean it up no problem if that works

Mete - I have CPM 154 Austenitizing at 1900F I am afraid it will air harden pretty quickly?

Matt - Thought about that as well, you haven't seen my welding skills in action. Nuff Said

 

[Brian Ayres]

I have a swage block that would work perfect for making a spoon. It's a Roger Lorance Swage Block.

Do you have an anvil? You could make a top tool by simply dishing a heavy piece of steel with a grinder then using it as a form with a ball peen hammer to dish out your spoon.

Even if you don't have an anvil all it takes is a heavy piece of steel.


I have 8 swag blocks being water jet from 2"x6"x16" 4140(Forklift tine drops) and am still trying to decide about having spoon/round depressions milled.... Problems like yours makes me consider having the depressions milled....

 

[RyanW]

nice Brian, I can see where that Swage Block would come in handy! I have actually been racking my brain for something that will work. I have a few bearings that might just be the ticket. Working the opposite direction to your Swage.