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Author Message   Glenn Tinkerer Username: Glenn Post Number: 1031 Registered: 07-2006 Rating: N/A Votes: 0 Posted on Thursday, July 12, 2012 - 06:35 am:    Most of the pressure plates I have come across are not painted, they are blackened by some form of chemical process - adonising if alloy or chemical blacking if steel. If yours is steel just go and buy a small tube of gun blue/black from a gunsmith - if you can find on in the UK! There used to be alloy and brass blackening products available in past times - model engineering suppliers used to sell them in small tubes or bottles. Try a Google search - in the 50's and 60's certain 'hobby' mags were full of DIY kitchen sink formulae for blackening all manner of metals.