I tried quickly googling this, but could only find pages on 'removing' permanent ink from whiteboards.
What I want to do is make some dry erase ink on a whiteboard already, stay on there permanently. Or at least make it more difficult to remove. Is there an easy way to do this? With, I don't know, hairspray, or something?
The story is that a few years ago, at my dad's office, I did a fairly large scale drawing on his whiteboard. He thought it was so great that he kept it there, and I heard often got compliments on it. Last month, however, he lost his battle with cancer, but his work offered to give us the whiteboard to keep.
So, any suggestions would be appreciated, as I really have no clue about how to go about 'preserving' this drawing which he loved so much.