Just found this thread, looking for some resto pics :read2:
That Metal Mask looks just what I'm looking for, Meep Meep, for my Bendix calipers.
I'm getting them sleeved cos the bores are shagged :icon_rolleyes:
The people doing the work can zinc plate them silver or gold (or yellow passivate?) or powder coat them most colours. Trouble is, none of those options are close enough to the original cast iron colour, and as had been said here, they need some sort of protection or they'll be back to rusty brown in no time.
So after seeing your pics, I've gone and ordered a tin of the Metal Mask & a bottle of the Metal Ready prep.
If I can get anything like the finish you got on your pedal assembly and the suspension parts I'll be over the moon :icon_mrgreen: