re: oils for wood grain
I've done this for awhile and love the results. I have on my latest build encountered a couple of surprises. The oil rubbed off due to two different things. First, it was on top of a base coat of acrylic that had thoroughly dried. I think I used Andrea acrylics under this, which are like Vallejo.
I put the oil down, W&N artist oils, brushed out to the end I wanted and was quite happy. Let it dry for a week. Tested it with a paper towel and then a gloved finger and it seemed quite dry. It was on a side panel for an Eduard camel and I had to squeeze it to get the top panel down firmly and some of it (on one side only) smudged off! So, a week later and I'm touching up the join between the top panel and the rear fuselage by adding some perfect plastic putty. Next day I realize I need to clean a little bit off the top panel so a little damp q-tip and it smudges that off too! What's up with that?
So, after you get the result you want with the oil, how do you protect and preserve it?