Can anybody give me some advice on cleaning?
In case of some extremely oily, greasy or otherwise soiled engine parts with rough surfaces, my coatings keep peeling of after deposition.
I have tried cleaning with benzine, an industrial washing machine, ultrasonic baths and different commercial purifiers.
Do I need some special etching process?
What kind of process do you recommend? What parameters? Which cleaning agents might be best?
What about shot peeling?
Thanks for any help!