123Invent Inventor Develops New Overhead Crane for Hanging Advertising Signs (OSK-1180) Provided by PR Newswire Apr 11, 2025, 4:45:00 PM.

I made this sign out of 1.25 inch white oak for its excellent durability outdoors. It was coated in a spar urethane finish and installed last fall. I had never used shellac as a paint sealer before ...