You will need a set of vernier calipers to set the cutting height perfectly, if not you have an offset. It includes some instructions for setting up the router, but I had a hard time going through a lot of scrap wood to install it. Create a template for each gauge of wood you want, 1/2, 3/4, etc., and use this as a guide for later adjustments. Remember not to change the planer setting or your setting blocks will be useless since you just changed the thickness of the finished part and yourโฆ