Originally Posted by
Djongo Unchained
18 doors. Oh hell yeah.
What are you trying to sand off? Paint or stain?
Sanding sponges are your friend on doors. Set up on horses is ideal, adjust height for back pain reduction.
Vacuum, brush, vacuum, tack cloth.
The cordless sprayer is sweet but might be more money than he wants to spend. He'll be changing the garage door color every two weeks though.
A fine tip and a little practice.
Almost any new cheap hvlp w/a little adjustability will do.
If you decide to backroll, you gotta go with the pattern; insets, verticals, horizontals. Special roller covers for smooth materials help as well.
Letting them dry lying flat reduces chances of drips and sags.
Light coats, sand between, vac, tack, shoot. Glassy.
Good luck.