chuck key look terrific!
A thought / suggestion:
I have multiple chucks, and they each use a different size chuck key. Plus, two different size square wrenches for my tool post. What about interchangeable tips?
I'm worried that the key will wear away the paint on the lathe, so I don't let the key touch the surface of the lathe.
Your idea is very good, I have manufactured some small batch lathe keys. The iron red color (M11) was manufactured for the first time, but there were some minor defects. After improvement, I re-manufactured the other two models M10/M12, which can fully meet your requirements. I have prefabricated the extended structure (outer hexagonal) and the middle screw hole, and I will gradually match its expansion components in the near future, for example: Other sizes of square key heads, as well as sleeve adapter kits, there will be adapters that can be compatible with other tools, which is a series of tool bases.
Unfortunately, I spent more time and energy on the machine tool modification, or the canopy construction. And I have another business that requires some time, as well as the necessary social activities of life. However, I will complete these trivial things as soon as possible, and push forward the small batch pilot production of the kit as soon as possible.
Also, a small number of lathe chuck keys are already on their way to Canada, and I hope some of you can use my design. Hopefully my little surprise will allow me to do something for the forum.