Hello everyone, I haven’t written here for a long time, there were a lot of different things to do. Now more or less freed. My friend and I started making slipjoints. He does the metal work, I do the drawings. Hopefully this will be implemented in a couple of weeks

We are very inspired by classic shapes, especially the knives of Tony Bose, Bill Ruple, Frank Centrofante, Jess Horn and of course the old Remingtons

I know there are a lot of classic folding knife collectors here. Here I do not have the opportunity to touch these knives in person, only photographs from the Internet and books. There is only the opportunity to look and touch ordinary knives and some old Solingen folders

I would like to ask for help, find out how the kick is made and the spring on them. I see that there are 3 most common spring shapes for slipjoints, I drew them here. It would be very interesting to know what form og the spring the masters adhere to. Also judging by the photographs of Tony Bose and Bill Ruple knives, it can be assumed that the kick is made as in the middle and lower figure with a dotted line, that is, it rests on on the flexible part of the spring, not on the flat area. My friend's concern is that it leaves a noticeable mark on the spring, like my Duok-Duok does. On the other hand, this arrangement provides stronger support for the blade and there is less chance that the blade will cut into the spring and become dull if you accidentally press on it inside the pocket with other things. I don't need exact dimensions, just the principle itself. I would really appreciate any thoughts

Chris Crawford has a list of Tutorials and one is the construction of a Bose Back Pocket Knife.
There might be some useful direction for your question there.
https://chriscrawfordknives.com/tutorials/3rd-party-tutorials/

Thank you very much
I looked carefully at his website, but did not find this section. Looks like I missed it. Now everything is clear, which means he makes such springs without an additional platform above the shank

Please post your progress with this venture.
I am interested in seeing what you create.

I'll definitely write. It's very nice that people are interested

Now it’s made of metal, next will be grinding