How To I’m trying to research how to make stop pins for a slip joint. Idk where to start

Z

Zachary Joost

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Jan 11, 2021
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So I’ve seen some makers using stop pins instead of the kick. Can someone point me in a direction of an informative how to. I’ve tried googling it but I’ve only found comparison type posts.

I hope I’m using the name correctly. 🤦‍♂️
 
Zachary Joost said:
So I’ve seen some makers using stop pins instead of the kick. Can someone point me in a direction of an informative how to. I’ve tried googling it but I’ve only found comparison type posts.

I hope I’m using the name correctly. 🤦‍♂️
Click to expand...
Are stop pins better?? I love a kick!! It makes adjusting "blade-fall" easy!!
 
What slipjoint HAS a stop pin?
I know "moderns" and SOME friction folders (SVORD, for 1) have a stop pin.
A am not aware of any knife with a back spring that does.
With the standard kick on the tang, a stop pin would bean un-necessary extra cost (mainly time) complication to the design, and redundant.
 
Perhaps if this is transferred to the Maintenance etc thread? You may receive answers that could help you? Some French traditionals, Italian too and Chinese now have stop-pins as a 'preventative measure' and in my experience they work consistently well. Some of it depends on the blade steel as well.
 
This post should be moved to the Shop Talk subforum - that's where knife makers hang out. Peregrin Peregrin can you help this poster out by moving this please?


afishhunter said:
What slipjoint HAS a stop pin?
I know "moderns" and SOME friction folders (SVORD, for 1) have a stop pin.
A am not aware of any knife with a back spring that does.
With the standard kick on the tang, a stop pin would bean un-necessary extra cost (mainly time) complication to the design, and redundant.
Click to expand...

Regarding what slipjoints have stop pins, off the top of my head the Benchmade Proper, the various Lionsteel CK01 knives, and a few others do.

waynorth said:
Are stop pins better?? I love a kick!! It makes adjusting "blade-fall" easy!!
Click to expand...

I like both stop pins and kicks, but I don't know that the knives I have with kicks really win in this category. With a stop pin, instead of filing the kick, you file the inside of the cutout in the blade. But I don't expect to need to do this very oftn, because most slipjoints I've seen with stop pins have the blade set deeply in the well, and also have modern, high-wear-resistant steels. Here's a picture I created for the last thread where we all talked about stop pins - almost all of the blade on my Proper would be gone before you'd need to adjust ride height (and this is S30V, which may be old fashioned compared to modern "super-steels", but can do a lot of cutting before I need to re-sharpen).

20221201_131900-jpg.2004302
 
huh ... I stand corrected. 😇👍
I never realized my 318 Proper has two stop pins. (1 "open"; 1 "closed"? ... tho the "open" is redundant since the blade spine contacts the backspring, same as on all my slipjoints, and lock backs.) 🤨

I looked with a flashlight, after reeding your post.
 
afishhunter said:
huh ... I stand corrected. 😇👍
I never realized my 318 Proper has two stop pins. (1 "open"; 1 "closed"? ... tho the "open" is redundant since the blade spine contacts the backspring, same as on all my slipjoints, and lock backs.) 🤨

I looked with a flashlight, after reeding your post.
Click to expand...
Nope, just one stop pin, just for close. The backspring is the stop for the open position.
 
afishhunter said:
Strange. I see two stacked pins, the upper about a pin width or so aft of the lower pin.
Oh well. It (probably) don't matter. 😁
Click to expand...

The stop pin in the Proper (and in all other stop-pin equipped slipjoints that I've looked at) just replaces the kick, nothing else. I don't have any pictures of mine disassembled (and I'm not planning on taking it apart anytime soon), but here's a nice shot from an article on Gear Junkie - you can see a single stop pin where the blade and backspring meet:

benchmade-proper-318.jpg
 
Yes, lionsteel and Jack Wolf Knives have stop pins.

My own thoughts, but doing a stop pin on a slippie requires much accuracy to not just get it right, but make it sound right too.

Maybe I’m just a picky ol’ fart, but with a traditional slippie, I never let the blade ‘go’ into the closed position…let it down
 
There's a member here on BF's who has added such a pin to some of his Buck lockbacks.
Maybe they'd have something for you.
 
Tyson A Wright said:
The stop pin in the Proper (and in all other stop-pin equipped slipjoints that I've looked at) just replaces the kick, nothing else. I don't have any pictures of mine disassembled (and I'm not planning on taking it apart anytime soon), but here's a nice shot from an article on Gear Junkie - you can see a single stop pin where the blade and backspring meet:

benchmade-proper-318.jpg
Click to expand...
must be a shiny spot on the spring I saw. 🤔
I have less than zero intention, desire, or reason to take mine apart, either.
I've always "thought" there was some merit to the old saying:
"Just because it CAN be taken apart, DOESN'T mean it SHOULD be." 😇👍

I did take apart my CRKT M21, to remove that 🤬🤬🤬 liner lock lock, and to convert it from washers to ball bearings (CRKT provided the bearings.) But I don't need (that I know of, anyway) to mod any of my other two "moderns".
 
If the design called for it, I'd use 416 stainless steel pinstock that I'd harden first. I don't know the exact recipe but when I spot weld 416 SS bolster they do harden some and have to be annealed before completing the finish grinding.

In making folders, there are hardened rods available out of the rc car world used for injector pins. Those are hardened already and can be ground down.
 
www.esnyx.com

Esnyx handmade knives

Esnyx Knives are handmade pocket knives by Sarasota, FL based knifemaker Evan S. Nicolaides.
www.esnyx.com www.esnyx.com
Some of his slipjoints have a stop pin.
It is a different technique wit pro's and con's.
I'll likely try my hand at them in the near future.
 
I learned something today - never heard of a stop pin in a slipjoint. I see how it's done in the Benchmade folder, but not sure there is any advantage over a kick.
 
Ken H> said:
I learned something today - never heard of a stop pin in a slipjoint. I see how it's done in the Benchmade folder, but not sure there is any advantage over a kick.
Click to expand...
You need less clearance on the inside so the handle can be skinnier. Also the edge can be a little bit longer towards the ricasso.

1d07cb_91ef177b41144c6e919410749390974a~mv2.jpg

Knife by Esnyx
 
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