RMweb Premium ColinK Posted April 28, 2020 RMweb Premium Share Posted April 28, 2020 Recently I’ve been painting some 0-16.5 motive power, two railcars for myself (they have a seperate thread), plus a steam loco and a diesel loco for a friend. All the models were primed with Alcad microfiller primer and painted with Tamyia acrylics. I put the (Fox) transfers on yesterday and gave them a quick coat of Testors Dullcote matt varnish today. Before varnishing I made sure the Dullcote was at room temp as were the models, although I did apply it in the garage. They all looked fine afterwards. I went out for my exercise walk while the varnish dried, everything was still OK except for one side of the steam loco boiler - the other side is fine. While I can rub it down and respray it, I would like to know what went wrong so I don’t have the same problem again. I don’t know if its relevant, but that boiler is the only thing that was metal - everything else is plastic, resin or 3D printed. Link to post Share on other sites More sharing options...
Swissrail Posted June 27, 2020 Share Posted June 27, 2020 (edited) I had this issue with Testors varnish. It attacks some kinds of plastic, in this case the plastic film of the transfer. If the varnish goes on too thick and stays wet for more than a few seconds, this is what happens. I found I had to airbrush it in very fine coats so it dried almost the instant it touched the model to avoid this crazing effect. I also found the same effect if I used it on an enamel painted model...it attacked the paint and did what you see here. Edited May 10, 2021 by Swissrail 2 Link to post Share on other sites More sharing options...
RMweb Gold Mick Bonwick Posted June 27, 2020 RMweb Gold Share Posted June 27, 2020 (edited) Testor's Dullcote from an aerosol will go on too thickly if you're not careful with it. Being an aerosol it's a binary device - either on or off. No control of volume or direction! The best way to combat the problem that you have encountered is to spray from about 12" away and move the aerosol across the work from one side to the other fairly quickly. This will ensure that there is only a thin coat reaching the model and that it dries very quickly. I sympathise with your result. Guess why! Edited June 27, 2020 by Mick Bonwick I've only just noticed how old the original post was. Sorry. 1 1 Link to post Share on other sites More sharing options...
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