Well it was back to the lathe today for an attempt at recreating the tiny locking screw that retains one of the main action screws in place. This is a very difficult screw to make as the specific thread does not exist in modern-day standards along with only around 1-1.5mm of threading length.
I was able to find a very similar all-thread stock after using some various screws to see what may work. The thread I’m using is 1/8″ x 40 BSW however I have noticed that the original screw seems to have had a deeper cut thread. The first thing I did was turned a screw head blank from some 4140 round bar I had lying around and then countersunk the back.
Once the screw head blank had been prepared, I then used silver solder to attach the all-thread onto the blank. I still need to clean it up and then cut the slot for the screw head to finalise. It’s probably not the ideal method for making a screw but options such as fully turning from a lathe and/or using a die is not really an option due to its very small size and my available equipment. I’ll update again once the screw is finished.
