I recently picked up this pre-war Gillette Tech via "that auction site", but the stud only had under a thread of engagement left. After I installed the first blade, what little was left of the threads gave way and it was completely stripped. The handle, on the other hand, looked OK and is likely made of harder material.
It's OK, we can fix it. We have the technology.
It REALLY helps to have a machine shop, and more specifically a lathe and a decent 4 jaw chuck.
Of course, you have to machine off the old threads before you can make new ones... all done:
Then you machine a new brass sleeve to bring the stud back up to diameter and ream it out to the same diameter (interference fit) as the machined-down cap stud, and you thread the sleeve to just under final thread dimension. Shown here still in the lathe with the cap partially installed.
You cut off the sleeve, solder it to the cap stud, and cut the final thread dimension with a die, so the die swages the sleeve into stud. File the sleeve flush and call it done. Re-plating is optional.
aaaaand... fixed. Good as new, though it may benefit from a replate at some point.
It's OK, we can fix it. We have the technology.
It REALLY helps to have a machine shop, and more specifically a lathe and a decent 4 jaw chuck.
Of course, you have to machine off the old threads before you can make new ones... all done:
Then you machine a new brass sleeve to bring the stud back up to diameter and ream it out to the same diameter (interference fit) as the machined-down cap stud, and you thread the sleeve to just under final thread dimension. Shown here still in the lathe with the cap partially installed.
You cut off the sleeve, solder it to the cap stud, and cut the final thread dimension with a die, so the die swages the sleeve into stud. File the sleeve flush and call it done. Re-plating is optional.
aaaaand... fixed. Good as new, though it may benefit from a replate at some point.
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