Winding up my first real tool making project, a customized table saw sled. Made from 3/4" sanded plywood, don't know exactly what material but pine or birch with about 7 laminations. The stuff you get at Home Depot for about $40/sheet.
Garage is unheated and pretty much uncontrolled heat and humidity in New England area
What finish would be best to keep it straight and last? Of course I want the bottom slippery (waxed).