I posted about this firearm previously in the thread titled "Help Me Design a Spring"
https://www.thehighroad.org/index.php?threads/help-me-design-a-spring.896840/
One of the issues when I bought it was a broken firing pin. There were a myriad of other issues that were addressed but the firing pin remained broken. Previously I had only made the gun go bang once and I'm pretty sure that particular cartridge wasn't all the way in its chamber. Here is a picture of what I started with.
I have tried over the last few months to find a suitable replacement but no matter how similar these guns look there are usually small differences inside. I've spent way too much guessing and buying parts that don't fit/work. I decided to just replace the firing pin.
First I ground off the remaining portion of the old firing pin flat.
I Drilled a hole for a 6 x 32 screw and tapped it. There is no fear about damaging the hardness of the hammer. The only way I could tell the drill bit was biting into the face of the hammer was by the sound it made. I couldn't feel the drill bit engage the steel.
Now to fit/file to shape
Here is the finished piece
The no. 6 screw was almost as thick as the old firing pin was tall. Unfortunately I estimated the angle for the hole incorrectly and had to utilize part of the screw head to reliably fire the priming compound. It doesn't look as good as I'd hoped for. But it is functional.
Here is a test function video.
https://photos.app.goo.gl/Tfezo4bkcr9NWTSHA
I have some clean up to do and I may be able to minimize the 'hook' on the bottom. Right now the firing pin is a tad long and as such the hammer doesn't move all the way forward when it strikes the cartridge. As the firing pin moves forward the bottom of the firing pin comes further down. I'll do that after I've run a full test fire on it in its current condition.
https://www.thehighroad.org/index.php?threads/help-me-design-a-spring.896840/
One of the issues when I bought it was a broken firing pin. There were a myriad of other issues that were addressed but the firing pin remained broken. Previously I had only made the gun go bang once and I'm pretty sure that particular cartridge wasn't all the way in its chamber. Here is a picture of what I started with.
I have tried over the last few months to find a suitable replacement but no matter how similar these guns look there are usually small differences inside. I've spent way too much guessing and buying parts that don't fit/work. I decided to just replace the firing pin.
First I ground off the remaining portion of the old firing pin flat.
I Drilled a hole for a 6 x 32 screw and tapped it. There is no fear about damaging the hardness of the hammer. The only way I could tell the drill bit was biting into the face of the hammer was by the sound it made. I couldn't feel the drill bit engage the steel.
Now to fit/file to shape
Here is the finished piece
The no. 6 screw was almost as thick as the old firing pin was tall. Unfortunately I estimated the angle for the hole incorrectly and had to utilize part of the screw head to reliably fire the priming compound. It doesn't look as good as I'd hoped for. But it is functional.
Here is a test function video.
https://photos.app.goo.gl/Tfezo4bkcr9NWTSHA
I have some clean up to do and I may be able to minimize the 'hook' on the bottom. Right now the firing pin is a tad long and as such the hammer doesn't move all the way forward when it strikes the cartridge. As the firing pin moves forward the bottom of the firing pin comes further down. I'll do that after I've run a full test fire on it in its current condition.