Nice metal work!
Dear friends, thank you! Steven I used an old classic technique that can be done only if the figure is made from white metal. After the cleaning of the molding lines (it is very important not to miss any spot) and correct any imperfection without using putty…I used a stainless pin inserting into an x-acto tip.
I polished by pressing slightly the main body of the pin (the side) not the nose or head so to eliminate any porous of the surface. Then using a clean cotton cloth I clean the surface thoroughly so to shine. After this step will be better to use plastic gloves. The next procedure is to pass the oils undiluted (you can use a Blue Black or Ivory Black with some blue added. If the oils are a little dry use linseed oil to make them more workable.
and the 3rd Part:
You can use the darker oil shade for the bottom of the figure and going up with the lighter shades. You will have a totally black or blue black surface. Do not be afraid. Depending of the oil company check if it can be wipe it using a clean cotton cloth but leaving a transparent film on to the metal surface. 10 to 15 minutes is enough…Then take off the oil according to your liking. I went for a shiny new armor so I wiped more of the oil paint. Will be better to pass the entire surface with very diluted X-19 Smoke or Clear Gloss X-22 both from Tamiya. So to protect the metal surface for rust. I hope that this is helpful.