This Sarah’s Top 5 DIY - Workbenches Let's get started with #5! Robert J Keller shared how to make a 1-Hour DIY workbench with just 2x4’s and a sheet of plywood! Robert started by cutting all of his 2x4’s to length, and then he assembled the base of his workbench using construction screws. He added these heavy duty castors that are easy to lock and keep the bench still when you need it, but can easily be unlocked and pushed out of the way when you don't. All that was left was to finish the base,