Streamline pen pen mechanism thread

[hawkeyefxr]

What is the thread in a streamline pen pen mechanism, while i have thread gauges even with glasses i would not like to say what i'm seeing.
I want to make a tool and need to know what the thread is.

 

[Phil Dart]

Streamline mechs don't have threads do they? They're normally just a push fit, the same as a slimline.

 

[alan morrison]

Friction fit.

 

[Neil]

What is the thread in a streamline pen pen mechanism, while i have thread gauges even with glasses i would not like to say what i'm seeing.
I want to make a tool and need to know what the thread is.

Ken, do you mean the thread that accepts the cross style refill? If that is what you are after, I surmise that you perhaps thinking of manufacturing some kind of extraction tool? If that is the case I wouldn’t bother as I’m not sure that it would take the extraction force, better to get thirty or forty spares and whack the duff ones out with transfer thingies!

 

[flexi]

Ken, do you mean the thread that accepts the cross style refill? If that is what you are after, I surmise that you perhaps thinking of manufacturing some kind of extraction tool? If that is the case I wouldn’t bother as I’m not sure that it would take the extraction force, better to get thirty or forty spares and whack the duff ones out with transfer thingies!

There speaks the voice of been there before!!
They are a real PITA to get back out especially with not a lot to get hold of

 

[alpha1]

Been there done that I spent months trying to find the thread size for a project I had in mind. There is no info out there on the thread size.
I even sent one away to a machine shop and paid them to determine what the thread was. The info came back thread not recognised.
I can check my notes and see what I came up with as a fix. It depends what you are wanting the thread size for exactly.

 

[hawkeyefxr]

Ken, do you mean the thread that accepts the cross style refill? If that is what you are after, I surmise that you perhaps thinking of manufacturing some kind of extraction tool? If that is the case I wouldn’t bother as I’m not sure that it would take the extraction force, better to get thirty or forty spares and whack the duff ones out with transfer thingies!

Yes that was my intension til i realise that the thread was at the top and would just come apart. I'll drink less beer next time
The original idea was to make a small slide hammer.
Thanks for the reply's though.

 

[Tom.1946]

Just on the subject of slimline and Streamline pens. Has anyone come across the problem of the refill winding itself in again??
Can you fix it, any advice from the experts???

 

[alan morrison]

Just on the subject of slimline and Streamline pens. Has anyone come across the problem of the refill winding itself in again??
Can you fix it, any advice from the experts???

You have a faulty transmission. They can be knocked out and replaced.

 

[hawkeyefxr]

You have a faulty transmission. They can be knocked out and replaced.

Founds it was the quality of the transmissions that was the cause, thanks for the reply though.

 

[Stephen]

i have broke more than one transmission by not cleaning the inside of the brass tube. So I wanted to fab a bushing to thread inside the tranny to strengthen the thin wall and distribute the load. I gave up trying to match the threads and fabricated it to the small diameter of the threads and with a step to match the outside diameter of the transmission. Yea, I now use a chainsaw file to clean the inside of the tube. I also use a potato to plug the tube when glueing. Have not lost one since. The made bushing gives me a little more wiggle room when I make haste.