Greetings:
Last year we repainted all the walls in our house with satin paint, white as before.
Formerly there were about a dozen antique wood clocks hanging all around the house. After the walls were spackled, sanded, and painted, the reddish-brown outline from this one clock keeps coming back!
Today we sanded down that location to bare 1930 plaster, then applied BIN primer, which 2 local hardware stores and a Home Depot all proclaimed the BEST primer for such situations.
Guess what? The outline stain of the clock is back as if we never sanded or primed it!
What would you recommend short of replacing the plaster there?
Thanks and Merry Christmas.