I have three problem O scale 4-6-4 Hudson locomotives and a same size 2-8-4 Berkshire in faded , unsound single coat black, on phosphated alloy. As an experienced paint chemist, when faced with this predicament on the small scale, I took the balanced, comprehensive full scale solution, using the same materials in smaller quantities. Spray stripping, cleaning with detergent, rinsing, drying and then the Hycote products.
First, their adhesion promoting spray, then etch primer, another adhesion promoter coat, then the next Hycote product, their filler/sealer, followed by the third application of adhesion promoter spray, before masking , then the appropriate spray finishes.This is automotive practice, with additional safeguards in the way of inter coat application of adhesion promotion, Why? Because that is the way I was taught, on very high end projects, with lowbake spray 2 pack non yellowing hydroxyacrylic polyurethane finishes for a venture my company pioneered and marketed very successfully. There were a series of E type Jaguars finished in different colours from the range that were photographed , at well known locations. I went on to take an MSc in Advanced Coatings Technology to complement my Degree, and my thesis built on the materials and methodology from this high end polyurethane work.
That same methodology goes into my model making.These locomotives are collectibles, and even in the rough conditions in which I bought them, cost up to £800 today. One of the largest, and heaviest, was found in better condition at £4000.(Mine didn’t cost that, but prices have increased because of inflation and scarcity—caveat emptor)
Do I make other models? Yes, radio controlled fast jets, tanks, naval vessels, cars, artwork, own design from serendipity, if I want to make and paint something , I do it meticulously, methodically and technologically soundly, without breaking the bank and in the way that my clients or I want. I had a long, varied and successful career as a paint scientist, added an MBA to my qualifications, ran my own consultancy and was headhunted to become a Chief Camouflage Scientist.
A reward for my modus operandi and it kept a roof over my family’s head.
Richard Taylor