help needed - Stop Pin replacement

L

lynn75

Joined
Nov 3, 2019
Messages
7
Hello, recently I obtained the Böker Plus Gust with copper scales.

Unfortunately the copper scales had some tool marks, so I decided to remove them and fix/polish them.

Of course upon reassembly I discovered that the stop pin had magically vanished 🤯

I contacted the designer Serge and Böker för dimensions / or even replacement, but no reply so far..

The issue is that the receiving hole in the knife scales is only 3mm in diameter, and so far I could not source any replacement anywhere.

And this being a shouldered pin I’m of course unsure what the overall diameter should be for perfect lockup etc 🫩

Might there be anyone around here that knows what to do in such cases?

It goes without saying that I’ve already
turned my flat inside out, crawled under sofas and x-rayed my dog, just in case..

I wish there was a face palm emoji!

Anyway - any help is greatly appreciated

Greetings from Sweden
Lynn
 
When you say a "shouldered pin" do you mean the sides are smaller in diameter than the middle?

I made custom stop pins for my Ti-lite auto conversions to produce the exact middle diameter that I wanted (pics below).

I started with the butt end of a drill bit, heated it red hot and let it air cool to soften it, then put it in the chuck of my drill press, at high speed, and used files to reduce all of the diameters to the required size.

I would recommend a drill/rod gauge (also pictured below) for such a process, and use it to frequently check the diameter of the portion of the pin that is being reduced. Of course you need to know the correct dimensions first. I suggest asking in General Discussion and the Boker subforum for people who own the same knife if they would measure their stop pin for you. Or perhaps you might get lucky and find a cheap beater on Ebay.

After I finish creating the desired diameters in these pins it's not necessary to re-harden them as they are still plenty hard for a knife stop pin.

stop pin.jpg

This is my drill/rod gauge, but there are a variety of styles. Such a tool allows one to precisely measure and match the diameter of anything with a round surface. I recommend a metal one over plastic to avoid the holes getting deformed. As simple a tool as it is, I consider it one of my most valued knife-working tools.


P1050663.JPG
 
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Oh WOW! Thank you so very much for your very informative reply! I might actually go that route if I don’t find a proper replacement!

Thank you very much!
 
😏 you know . . . this could be a big moment in your life . . . a cross roads . . . the start of a whole other "hobby" with almost an infinite choice of cool stuff to buy . . . maybe you are like me and have taken folding knives to the point you don't need much more . . .

What I am saying is :
1776562993275.jpeg
I like mine . Of course mine is from about 1985 but looks like they are still making 'em .
I always say : If you are going to survive in this world a guy needs a lathe , a TIG welder and a Swiss Army Knife . ;)

I might actually go that route
Click to expand...
Do you already have a drill press ?
 
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Oh wow, that would indeed be fun 😳

I guess today is as good as any to change my life 😅

I wish I had the means for such exciting experiments - but I’ve spent it all on knives of course 😬
 
lynn75 said:
Oh wow, that would indeed be fun 😳

I guess today is as good as any to change my life 😅

I wish I had the means for such exciting experiments - but I’ve spent it all on knives of course 😬
Click to expand...
You know . . . there was a time . . .
when the computer chip fabricators moved from my town to China ; there was tons of machinery for sale cheep .

However I bought mine brand new from a lovely Machine Tool supply in Denver . I was setting up to "follow my dream" and go into business for my self . The demand for what I WANTED TO MAKE dried up .
I say lovely because it was owned by a woman . Not just any woman ! ! !
She was a machinist during WW II and then she went into business for her self .
When I would visit Denver and pick up tooling I often had questions from my self teaching adventures . . .

Inverably who ever I asked there would say :

"Go ask Mother . She'll set you straight ."

She was know as "Mother" . She was like late sixties or so.
When I would tell her about my problem she would whip out a pencil , make a quick professional looking diagram and then say :
"Listen to Mother . This is what you do " .
 
3mm is about 1/8". You could buy an 1/8" drill bit. Cut the smooth end and fit it to the knife.
 
lynn75 said:
Oh wow, that would indeed be fun 😳

I guess today is as good as any to change my life 😅

I wish I had the means for such exciting experiments - but I’ve spent it all on knives of course 😬
Click to expand...
Here you go :
Somebody asked " do you know anybody who can make this for me ? ".
I said I can .
forgive the crappy images I photographed them with my Kindle off my iPod . Pretty old images .
I started here (6061 T6 aluminum plate )
1776921865081.jpeg

Cut it out on the metal bandsaw . Then mounted it on the milling table on the lathe . Cut the slots with a precision slitting saw . Precise to 0.0001 inch .
1776921960636.jpeg

Cleaned 'er up a little with a few other processes
1776922009249.jpeg

Made enough to buy a Sabenza 21 with Ebony (before they were discontinued for the 31 and the price went up) .
So the story has a happy ending .
1776922115601.jpeg
 
Wowbagger said:
You know . . . there was a time . . .
when the computer chip fabricators moved from my town to China ; there was tons of machinery for sale cheep .

However I bought mine brand new from a lovely Machine Tool supply in Denver . I was setting up to "follow my dream" and go into business for my self . The demand for what I WANTED TO MAKE dried up .
I say lovely because it was owned by a woman . Not just any woman ! ! !
She was a machinist during WW II and then she went into business for her self .
When I would visit Denver and pick up tooling I often had questions from my self teaching adventures . . .

Inverably who ever I asked there would say :

"Go ask Mother . She'll set you straight ."

She was know as "Mother" . She was like late sixties or so.
When I would tell her about my problem she would whip out a pencil , make a quick professional looking diagram and then say :
"Listen to Mother . This is what you do " .
Click to expand...
Oh this is beautiful! It really paints a vivid picture - it sounds like you could be a writer, or SHOULD be a writer! (that is when you’re done with your CNC milling projects 😎)
 
dano said:
3mm is about 1/8". You could buy an 1/8" drill bit. Cut the smooth end and fit it to the knife.
Click to expand...
Thank you for your help and response! Unfortunately it’s a shouldered pin - so it has that one 3mm dimension at the enda, and then another one for the middle part that is unknown to me. Böker replied btw that they don’t have any spare parts due to this being out of production 😩

Maybe someone who owns that same knife could measure the thickness of the stop pin with a caliper.. (would not require disassembly)

Exciting times 😑
 
lynn75 said:
Oh this is beautiful! It really paints a vivid picture - it sounds like you could be a writer, or SHOULD be a writer! (that is when you’re done with your CNC milling projects 😎)
Click to expand...
hahahahha
if my high school English teacher could here you say that .
I got Ds all through
She once said "I hope one day you will develop an interest in this ".
See was nice looking and had a wonderful voice so I showed up and enjoyed that . . . while I read books on mechanics and metal working in class.

Nahhhhh I just regurgitate snipits from storys I've read and my mentor could sell coal to New Castle and talk all four legs off an Arcturan Mega-Donkey then convince it to go for a walk afterward.

I whip out a phrase or two he used to use .
These days I mostly read Douglas Adams . I predict one day in the distant future his superior literary prowess will be "discovered" and Shakespeare will then seem rather titchy and embarrassing .

it's all done with mirrors .
but thanks
 
lynn75 said:
Maybe someone who owns that same knife could measure the thickness of the stop pin with a caliper.. (would not require disassembly)
Click to expand...
you know . . .
there is a Boker Forum here on Blade Forums
Here !

OH !
YOU ARE ALREADY THERE .
never mind .
 
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