cromptonnut Posted April 12, 2015 Share Posted April 12, 2015 Hi all I've just unpacked my box of old Lima 6 wheel milk tankers and, as you may remember, are white plastic with overprinting for the logos. Some of them have yellowed a bit and I'd like to get them back to being white. I'm not quite sure what would be best to use to remove this ageing (which in a way is weathering, so I thought here was best) and would appreciate your advice. Many thanks 'Nut Link to post Share on other sites More sharing options...
RMweb Gold Mick Bonwick Posted April 12, 2015 RMweb Gold Share Posted April 12, 2015 I've never tried to do what you're asking about, but if it was my problem then my plan would be: try dipping a cotton bud into isopropyl alcohol and rubbing gently at one end of the tank to see if there's a change in colour, or if you can get at it, the underneath of the tank try the same with white spirit finally have a go with T-Cut or similar, but this will be a bit more abrasive than the first two Link to post Share on other sites More sharing options...
RMweb Premium uax6 Posted April 12, 2015 RMweb Premium Share Posted April 12, 2015 A trick that a mate uses on old telephone cases is to use a bucket of water with some Vanish Oxy-action in it. Leave it in sunlight for a couple of weeks and they go back to being the original colour. I know they are made of ABS, but it might work on whatever the tankers are made of. Another method (again for ABS) is shown here: http://www.samhallas.co.uk/collection/retr0bright.htm Andy G Edit: if you go to http://www.samhallas.co.uk/telecomms.htm you will find out stuff on the railway telecomms network! Link to post Share on other sites More sharing options...
Fat Controller Posted April 12, 2015 Share Posted April 12, 2015 I would try the Vanish on something else before plunging your milk tanks into it; I left (OK, I forgot) a shirt in it for a couple of days, and the plastic buttons crumbled when I took it out. Link to post Share on other sites More sharing options...
Poor Old Bruce Posted April 13, 2015 Share Posted April 13, 2015 Another method (again for ABS) is shown here: http://www.samhallas.co.uk/collection/retr0bright.htm I have only had a scan through this but is there a warning that a mixture of peroxide and glycerine can be exothermic (or even explosive)? I am not a chemist and I am basing the above comment on a talk (given at an exhibition) on the possible consequences of mixing chemicals commonly found in the home so I don't really know if 'hydrogen peroxide' is different to 'peroxide' (I don't bleach my hair - it's well on the way to that colour on its own) but I would urge potential users to think carefully and read up as much as possible about it if contemplating using such a mix. Link to post Share on other sites More sharing options...
sean hpw Posted April 13, 2015 Share Posted April 13, 2015 The other option that comes to mind, why not simply mask the logos (or find replacement transfers) and repaint the tank white? Sean Link to post Share on other sites More sharing options...
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