I sanded down a 2 inch old Maple butcher block bowling alley and stained 48 hours ago. I then applied 2/3 poly to 1/3 mineral spirits and let sit in direct 80 degree sun from 10-4 pm. It was totally dry after 2-3 hours.
Is it safe to sand and apply second coat or do I need to wait 24 hours as suggested?
This answer was helpful:
What is the proper procedure to apply multiple coats of Polyurethane?
It's all about adhesion. When you recoat after 2 hours you get a chemical bond between layers. If you let it go longer than that, you need to wait 24 hours so it's hard enough to sand and get a mechanical bond
However I'm curious if since my table is dry, then it will be a mechanical bond (after only 4-6 hours)