Sanded all surfaces lightly with 220 and then 400. Still easy to sand through the 22m Veneer so go easy. First finish was with Watco Teak oil, let dry for 3-4 days minimum since it bleeds a bit. Then used 4-6 coats of Minwax Gloss Spar Urethane - I found it to be the best to build up and sand down. It took a Gallon and a Quart. Applied it with foam brushes which I disposed after each use. Only worked on Horizontal surfaces, and "poured" it on and smoothed it out, let dry 1-2 days and sanded any run-off drips. Sanded all coats in between with 400, final coat with 600 and slathered on the top coat. The Spar dries like a rock, is very glossy, and hard as nails. I used a NIOSH resperator and long sleeves, since this stuff is nasty and I learned full protection is required after my arms got a rash from the sanding dust and fumes. It was worth it.