Hiya Gents,
I've been using this old buggered up double stack sideplate as a slave pin for assembling lockwork for quite a while now. Being somewhat of a tool junkie I've been looking for a replacement of sorts that is, well, more tool like, rather than a repurposed junk part.
Well, in my travels about the interwebs I came across these...
Those are called 'Core Pins'. I'm not entirely sure what they are used for in industry or what machinery they are indended for, but I gather they are employed in the plastics molding industry for forming and poking holes in stuff.
They are two and a half inches long and precision ground of hardened M2 tool steel to Rockwell C60. So, in the same hardness range as premium knife steel.
The pokey end has a sharp edge on the circumference and is slightly concave. Presumably for poking holes in stuff. We'll need to address that. It wouldn't be an issue on a steel frame but liable to gouge the pin bores on an aluminum frame
So, a brief buzz on the belt sander and a lick on the ceramic stone
....and the pokey bits have been made safe
Nice to have a bit of a handle on a proper tool when wrestling those tiny bits into position. And, should you have a mind to assess the hammer/sear engagement you can poke those pins clear through the frame and set up the hammer & sear in place externally on the very frame they are going in.
I found these at McMaster-Carr...
The big pin is .140 diameter, $11.73
McMaster-Carr
And the one for the sear is .100 diameter, $6.83
McMaster-Carr
Cheers
Bill
I've been using this old buggered up double stack sideplate as a slave pin for assembling lockwork for quite a while now. Being somewhat of a tool junkie I've been looking for a replacement of sorts that is, well, more tool like, rather than a repurposed junk part.
Well, in my travels about the interwebs I came across these...
Those are called 'Core Pins'. I'm not entirely sure what they are used for in industry or what machinery they are indended for, but I gather they are employed in the plastics molding industry for forming and poking holes in stuff.
They are two and a half inches long and precision ground of hardened M2 tool steel to Rockwell C60. So, in the same hardness range as premium knife steel.
The pokey end has a sharp edge on the circumference and is slightly concave. Presumably for poking holes in stuff. We'll need to address that. It wouldn't be an issue on a steel frame but liable to gouge the pin bores on an aluminum frame
So, a brief buzz on the belt sander and a lick on the ceramic stone
....and the pokey bits have been made safe
Nice to have a bit of a handle on a proper tool when wrestling those tiny bits into position. And, should you have a mind to assess the hammer/sear engagement you can poke those pins clear through the frame and set up the hammer & sear in place externally on the very frame they are going in.
I found these at McMaster-Carr...
The big pin is .140 diameter, $11.73
McMaster-Carr
And the one for the sear is .100 diameter, $6.83
McMaster-Carr
Cheers
Bill
