Help fixing an old pen!

[keithbyrd]

Customer sent this to me and wanted to know if there was anyway to repair/replace the threads in the cap of this rollerball?

 

[jttheclockman]

I do not do kitless pens but do repair work on some odd things at times. My go to tag line is always reverse engineer it. It was put together so it has to come apart. That basically with any object. It was built so unbuild it. That threaded insert was inserted in the metal cap so drill it out and clean it up and make another one to match the threads of the pen.