A few questions about Liner lock knives

[Natlek]

So , I have piece of Damacore DC18N / 3.5 x 38 x 230mm / . I intended to make a knife for myself from it . Now I'm glad I haven't done it yet . I don't know what I was thinking when I bought it ............. 12 centimeters of that steel to be used in handle covered with wood is insane considering how much it costs !
Since I'm a genius who discovered that 300 euros hidden under a 10 euro wood is not a very smart I came up with a new plan , I will buy ordinary Damasteel and I will make two folder knives. Damasteel for scale/ frame and Damacore for blade I already told you that I am genius , but I have a few questions .......I will use EDM in my friends shop for cutting all parts and CNC where it will be necessary .Before that , I will make a dozen more liner/frame lock knives from carbon steel to practice a little and perfect the design.
The question is this.............Since I will use Damasteel for the frame , how should I do liner lock bar ?? Logic tells me that I have to bend that part before hardening ? Wrapping it in foil is not a problem, what I don't know is what will happen during HT process , will the bent part stay like that or ................ ?
Bend with the help of heating afterwards HT is not option ? It is air hardening steel ?
What other choice I have ?

 

[SBuzek]

Cut and pre bend, then h/t wrapped in foil. Do not plate quench just still air is fine
Then temper back to spring. About 1150⁰F will give you Rc 46-47.

 

[Natlek]

Cut and pre bend, then h/t wrapped in foil. Do not plate quench just still air is fine
Then temper back to spring. About 1150⁰F will give you Rc 46-47.

Thanks my friend , that was what I wanted to hear On Rc 46-47 Damasteel will etch fine , right ?

 

[JoeBusic]

.......I will use EDM in my friends shop for cutting all parts

I want your friend

 

[Natlek]

I want your friend

No , you don t he will kill me one day

 

[Natlek]

I want your friend

I already said that I am a genius His daughter is a wizard who can make my drawings into something that machines can understand................ Also his daughter and mine daughter are friends. They both love to ride my Trial bikes....... That means it's easy for me to bribe her. . . I take them to the mountains on Sunday and they drive bikes there . And if they don't fall often and knock out their knees we secretly do whatever I want in shop on next Sunday. ..her dad has no idea about it

 

[SBuzek]

Thanks my friend , that was what I wanted to hear On Rc 46-47 Damasteel will etch fine , right ?

Yes use it for spring in slip joints and etches great.

 

[SBuzek]

 

[Natlek]

View attachment 2214740

You make knives my friend and most of us make sharp steel bar ... with handle

 

[12345678910]

Why not Ti as a spring 6Al 4V

 

[Mobius1]

I switched to using titanium personally, since it has the perfect elasticity and plastic deformation for a liner and/or frame lock. You just bend it to where you want when it is cool, and that is it.

I had issues trying to use steel, because the bend I would apply pre-heat treat would often shift. It's just not worth the trouble to me when Ti is absolutely perfect for the job.

 

[Natlek]

Why not Ti as a spring 6Al 4V

I thought about that. Titanium is the only metal I like. All the utensils I use for preparing food while I'm fishing are made of titanium, even the watch I wear when fishing. . . ..
But t I've already decided and it's all in my head how I'm going to do this, I mean the design . I'm going to do it now and never again . . .

 

[Natlek]

I switched to using titanium personally, since it has the perfect elasticity and plastic deformation for a liner and/or frame lock. You just bend it to where you want when it is cool, and that is it.

I had issues trying to use steel, because the bend I would apply pre-heat treat would often shift. It's just not worth the trouble to me when Ti is absolutely perfect for the job.

I will order some cheap stainless like AEBL and I will practice little before I done that with Damasteel .. .

 

[Natlek]

I understand this , but how much contact is enough ? 2 ? 3 mm. ?

 

[JoeBusic]

I understand this , but how much contact is enough ? 2 ? 3 mm. ?

There is little force downward so even 1mm will be good if it's hardened. Feel free to accommodate to esthetics.

 

[Natlek]

There is little force downward so even 1mm will be good if it's hardened. Feel free to accommodate to esthetics.

Let's meet in the middle, make it about 2mm
When you already mentioned that , would you please look in this thread and comment ?? I think I have some excellent solution for new lock for folding knives .

New lock mechanism for folder knive

I did not invent anything , I find this mechanism in many devices. I know that it is rock solid. What do you think if we used it in a folding knife? We would get excellent proportions of the blade/handle , and very easy to handle ? I have never seen this in any folding knife but that does not...

www.bladeforums.com

 

[A.McPherson]

I think that's a pretty cool idea N Natlek , definitely some challenges to overcome, but cool idea.

 

[A.McPherson]

So on that other thread some folks were talking about the difficulty of finding parts to make your lock. I think if you went with the right size of roller bearing pins you'd be set.

Like the pins in this

 

[Natlek]

So on that other thread some folks were talking about the difficulty of finding parts to make your lock. I think if you weren't with the right size of roller bearing pins you'd be set.

Like the pins in this

https://www.grainger.com/product/35...w8VZnQqXOT17CSi6CXxoCgR4QAvD_BwE&gclsrc=aw.ds

Thanks my friend I am familiar with them , I'm a car mechanic I have lot of them in different size , I think that rollers on this one are right size .........