Dads Toy Posted October 23, 2009 Share Posted October 23, 2009 I've just bought some new hinges as I've eventually got fed up with the amount of play in the old ones. I've got the later chunky ones with washers between the halves which seem a bit stiff at the moment but will ease off I'm sure, only problem is painting them. They look like they have some sort of coating that makes them look "bronze" and it is fairly rough in texture. What's the best way of painting them? I don't really want to file/sand them smooth as this would take the coating off (or am I supposed to). Do I use a thin coat of body filler to smooth them out, or lots of primer? As they don't come apart, how do you paint in the join between the 2 halves? The old hinge screws have been getting regular doses of plusgas over a few weeks and I can actually start them turning plus I have new bolts and J nuts so OK there, I just want to get a good finish on these new ones - suggestions? Malcolm Quote Link to comment Share on other sites More sharing options...
western Posted October 23, 2009 Share Posted October 23, 2009 the coating is probably cadmium plating, DO NOT sand it off, at work we have been told not to de-corrode any steeel cad plated bolts/screws because the dust created can cause health problems see below --- Health Warnings Cadmium and Cadmium electroplated products are safe to deposit, use and handle normally, however under certain conditions Cadmium can present a health hazard. Effective respiratory equipment and exhaust ventilation must be arranged when welding or otherwise heating Cadmium electroplated products over 250 oC, as the Cadmium oxide fumes produced are highly toxic. Adequate exhaust ventilation must also be arranged when handling Cadmium metal in the form of powders or dusts. Routine precautions taken under the UK COSHH regulations will ensure risks are properly controlled. Is it Harmful? No. Cadmium can be handled just like any other metal. It will only prove to have harmful effects if absorbed into the bloodstream though, for example smoking (there is significant cadmium in tobacco). Welding Cadmium or Cadmium electroplated products, gives off a highly toxic Cadmium Oxide fume, which if breathed in can enter the bloodstream where it is readily absorbed and in severe cases will cause kidney problems, failure and death. Breathing apparatus must always be worn should such welding be necessary, or when handling Cadmium in a fine powder form. copied from http://www.poeton.co.uk/w1/cadmium.htm I would suggest a good degreaser to remove any unwanted dirt, then primer/paint to the required colour/finish Quote Link to comment Share on other sites More sharing options...
Giles tout terrain Posted October 23, 2009 Share Posted October 23, 2009 unless you key them no paint, primer or filler will stick at all, i would key them with a red scotchbrite then etch prime and paint then wax them before you put them on as you can never get paint all over them. Quote Link to comment Share on other sites More sharing options...
ChrisM_110 Posted October 25, 2009 Share Posted October 25, 2009 I bought some cheap Birtprat hinges, knocked the pins out, ground flanges in for nylon washers, painted, greased and reassembled. New spec hinges, for no extra cash. Quote Link to comment Share on other sites More sharing options...
gilloverland Posted October 25, 2009 Share Posted October 25, 2009 I thought it was just electro plated zinc. Cadmium, I doubt it. Anyway, whatever it is I've recently painted some of these later style hinges for my 110. Make sure they're not greasy from the wax paper wrapping then use an acid etch primer first and paint with normal primer, paint and laquer. Halfords now sell as etch primer in areosol cans, I know you can get it cheaper but dead handy for little parts such as these. Quote Link to comment Share on other sites More sharing options...
ajh Posted October 25, 2009 Share Posted October 25, 2009 Yeah it would be zinc, if you want a smoother finish you need to do an etch primer followed by a filler primer, likely quit a few coats follows by sanding until the surface is smooth. I would try to find at least 2 colours so you can see when you get closer to the zinc. Quote Link to comment Share on other sites More sharing options...
Dads Toy Posted October 25, 2009 Author Share Posted October 25, 2009 Thanks for the suggestions. I tried modifying some ***itpart hinges but not completely successful so it's the genuine article this time. I initially looked to see if you could take these apart for painting but I get the feeling if I can get them apart I won't be able to get them back together again! Thanks for the reply that Halfrauds do etch primer, that was going to be my next question. At least I'll be practised when I come to do the rear door! Malcolm Quote Link to comment Share on other sites More sharing options...
Marco Posted October 25, 2009 Share Posted October 25, 2009 I've fitted the same 'upgraded' hinges to my 127, used 'zinc spray paint" as primer, on top ordinary synthetic paint. All fine, no paint coming off so far. Cheers Marco Quote Link to comment Share on other sites More sharing options...
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