Q1 2016 Photochemical machining question

Question 1

Explain steps of photo chemical machining process

Answer 1

1. clean raw blank part
2. apply resist by dipping, spraying or painting
3. place negative on resist
4. expose to UV light
5. develop to remove resist from areas to be etched
6. etching in progress
7. etching in process complete
8. remove resist and clean part