davyjcrow Posted December 4, 2011 Share Posted December 4, 2011 Hi everyone, Landed myself in a bit of a pickle so to speak in that I have made a stainless steel etch sheet, part of which is new side inserts for a coach. These sides will be painted in NSE livery (so many different layers of paint and masking tape- all of which will need a rock solid primer otherwise I can see the first sight of masking tape causing all of the paint to flake off!) However - looking at the standard railmatch etch primers, the info that I have found seems to suggest that they won't work on stainless steel. Does anybody know why that is, and what might work instead? Thanks David Link to post Share on other sites More sharing options...
RMweb Gold Happy Hippo Posted December 4, 2011 RMweb Gold Share Posted December 4, 2011 Etch primers are designed to be used with non ferrous metals Regards Richard Link to post Share on other sites More sharing options...
ozzyo Posted December 4, 2011 Share Posted December 4, 2011 Hello David, you could try the etch primer made by Henkel Loctite under the name of Teroson. what it says on the can, fast drying 1K etch primer. Provides excellent adhesion to steel, galvanised steel and aluminium. No mention of S/S or brass, I use it on brass and would say that it's the best primer that I've used. I got my last lot off a well known auction site for approx £7 a can. OzzyO. Link to post Share on other sites More sharing options...
DonB Posted December 4, 2011 Share Posted December 4, 2011 Its called Stainless for a reason! I'm long retired from Industry, but we etched samples of S/S for microscope viewing using a solution of mixed acids in alcohol (acids at about 1%-3% strength, IIRC). Memory says it was called "Murakami's reagent"! Potentially nasty stuff! I'll have a dig in the loft for my old text books and try to be more informative. Alternatively, the people who did your etch should be able to supply you with an etched/primed surface as part of their package?? Or do you have an electro-plating company nearby? Some of the liquids which they use may do the job, so they may be able to help, and would be by far the cheapest option, if you ask nicely! Hopefully that would give you a surface capable of being painted. Or cut your losses and have your etch re-made in Brass? Link to post Share on other sites More sharing options...
davyjcrow Posted December 4, 2011 Author Share Posted December 4, 2011 Thanks everyone for your replies. Ozzy, I will try the Teroson and see if that works - seems like the best bet. Don, I would normally have used brass but the majority of components on the etch are intended to be silver colour window frames, hence the stainless. Would buffing the surface with an abrasive potentially also help a primer take hold? Link to post Share on other sites More sharing options...
Pugsley Posted December 4, 2011 Share Posted December 4, 2011 Would buffing the surface with an abrasive potentially also help a primer take hold? Yes, definitely. Etch primers help with adhesion as they key themselves in with the chemical etching action, abrading the surface will have a similar effect but it possibly won't work quite as well. Link to post Share on other sites More sharing options...
shortliner Posted December 4, 2011 Share Posted December 4, 2011 300629483823 £7.99BIN +£2.99 P&P Link to post Share on other sites More sharing options...
Sam Moss Posted December 4, 2011 Share Posted December 4, 2011 I'll have to ask in the paint shop at work as they are always painting stainless steel. Will see if I can get a number off something and look if its available to the public. Link to post Share on other sites More sharing options...
Chris g Posted December 12, 2011 Share Posted December 12, 2011 Suggest you abraid the surface with very fine wet or dry (I've seen plastic scourers suggested), to give a key and then clean thoroughly. I would then use an etch primer. Chris G Link to post Share on other sites More sharing options...
davyjcrow Posted December 12, 2011 Author Share Posted December 12, 2011 Thanks again to everyone for the replies, much appreciated. I have acquired some auto etch primer that works with stainless steel and as suggested above by Pugsley and Chris I tested a piece by rubbing with wet & dry, and cleaning with cellulose thinners. A quick spray later and the primer seems to have taken well. The etch primer looks like pretty nasty stuff though. Definitely an outdoors job. Cheers David Link to post Share on other sites More sharing options...
ozzyo Posted December 12, 2011 Share Posted December 12, 2011 I have acquired some auto etch primer that works with stainless steel and as suggested above by Pugsley and Chris I tested a piece by rubbing with wet & dry, and cleaning with cellulose thinners. A quick spray later and the primer seems to have taken well. The etch primer looks like pretty nasty stuff though. Definitely an outdoors job. Cheers David Hello David, what make and where did you get it from please. All etch primers are a bit naughty, in that the paint / acid can get into your body not just through your respiratory system but also through your skin. OzzyO. Link to post Share on other sites More sharing options...
davyjcrow Posted December 13, 2011 Author Share Posted December 13, 2011 Hi Ozzy I live in Canada and managed to acquire some from an auto shop here called Canadian Tire. It's called Dominion Auto Sure Seal self-etching primer and states that it can be used with stainless. Comes in a standard aerosol. I guess Halfords in the UK might carry something similar? PS - thanks for the safety tip. Link to post Share on other sites More sharing options...
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