Ignoramus28889 wrote:

Iggy will find a high speed spindle and a nice carbide rotary engraving
bit work nicely to engrave lettering and markings on aluminum or plastic
enclosures which can be paint filled for a very nice result.

Which brings up a question, how do you paint fill them? What paint etc

McMaster Carr, lacquer sticks. http://www.mcmaster.com/#lacquer-sticks/=8gob6f
Page 1925 to start.

Wes