I restore a 1962 Hamilton Gemini with a 505 movement. This also includes the replacement of the roller plate/contact.
0:00 - start
0:20: - Let the Show Begin!
20:55 - replacing the roller/contact
The ultimate 'bible' of Hamilton Electric watches...
Rene Rondeau's "The Watch of The Future"
https://amzn.to/3TNkdcf
Need Rodico?
https://amzn.to/3DiFe7n
How about Finger cots?
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This jeweling press is cheap - but works for most of what a hobbyist would need.
https://amzn.to/45sOPFu