5: Let’s Visit A Wholesale Optical Lab You must be a Total Access member to access course content. Back to: 7: Finishing: The Optician’s EdgeIf I had the power to make you visit a wholesale surfacing lab I would! But, just in case you can’t do that: Previous Lesson 4: A Brief History of Edgers As much as I hate, “When I was young I had to…” Lesson 4 within section 3: Finishing Equipment. Next Lesson 1: Let’s Talk About Base Curves Good theory – not so good real application. Lesson 1 within section 4: Layout Work Basics.