Chemical Milling

[ricey3]

Chemical milling, chemical etching differant name for the same thing. It could be done the normal way but it would be pretty fiddly with the material only being .25mm thick and quite easily picked up. I dont have a problem doing it but it looks like the etching process is the way these things are normally made as well as making a nice job of it. I know from milling pcb's what a horror doing very small stuff is though. I may of understimated the cost of etching yet so may end up milling the piece.

[Robin Hewitt]

I don't think steel etches very well, it tends to passivate. Could this be electrolysis?

[audioandy]

Have a look here what this guy has done, photo's 10 and 11

http://www.metallmodellbau.de/MINI_BONELLE_II.php

Stupid me not read the post correctly its encoder wheels your after