Quote:
Originally Posted by alan2525  Painting Brass loco chassis and parts.
Some Non Ferrous Metals dont seem to take paint too well, particularly Aluminium and Brass. I'm going to use an acid etching primer but wondered if it was worth blasting the items to make a key for the paint. What grit would you use for brass. I'd want something non aggressive, just to give a satin sheen rather than a pitted surface!
Otherwise I'd just abrade the surface with wet and dry and make sure it's grease free prior to the primer which will probably suffice! |
Have been in the same quandary myself, overcame it by using a very fine grade of sand, that is sold as a filler for between bricks, that have been laid for a footpath.
This sand is very fine and free running, it leaves an excellent key for the paint to adhere to, the surface of the brass was pitted, but with very fine pitting, two thin coats of enamel covered it nicely and left an excellent gloss to the enamel as well.
This sand could be used quite a few times, but it is not a hard sand like silica, that can be reused many times over. This path filler sand is only fine river sand, so it will turn to dust as you use it.
Have a look for some at your local hardware store and see what you think of it.
regards radish