Thanks to you all that's cleared that up for me,your explanations are clear and now I know what to do. I will post photos as I proceed. Thanks once again for your time.Roger

I found the enamel over acrylic comment interesting I have never had a reaction between acrylic and enamel paints. The only reaction I have seen ( to my chagrin) was cellulose over enamel ( do not do it EVER) enamel over cellulose is fine. Acrylic not using powerful solvents tends to be safe over anything and once "set" pretty resistant to the solvents in enamel paint. However when it comes to a painting sequence I have actually used cellulose ( clear shrinking dope) followed by enamel for base colour then acrylic for details.

Hi Roger, Metal fittings of any kind and white metal figures can be painted with either Humbrol type paint (enamel) or Acrylic paint,both will need their own primer, but remember😱. you can paint enamel over acrylic, but not the other way (acrylic over enamel).
Most of the fittings I get in my Deans Marine warships are white metal and resin, I use Halfords plastic primer (grey or white)
then use acrylic paint from various company's to finish off.
Hope this is of some help to you.😊

cheers Peter👍

Hi Rogal,
Whatever it is (wood, fibre glass, plastic, white or any other colour metal) PRIME IT!
Primers are designed to give the top coat paints something to stick to. Otherwise they will scratch easily and flake off especially from smooth plastic or metallic surfaces etc.
Enamel or acrylic? Your choice, just make sure both are the same basis otherwise you may get a nasty reaction when you apply the top coat😲 Acrylics are usually easier to use, don't pong, and the brushes can be cleaned in warm water😊
Happy painting, cheers, Doug 😎