The table on the Sherline mill is thicker than the table on the lathe because of the greater forces transferred to the table in milling and the requirements for stiffer setups. When using the Sherline vertical milling column on the lathe, the table can be "beefed up" with the addition of this plate, which adds 1/2" of thickness to the table.
It also serves as a tooling plate that protects the surface of your lathe table from damage. The plate attaches to the table by means of four recessed cap screws and T-nuts. It should be removed for lathe turning to maximize the diameter of part that can be turned and so that the standard tool post can be used.
3017 Sherline Crosslide Accessory Plate Instructions
CA Prop 65 WARNING: Drilling, sawing, sanding or machining wood products can expose you to wood dust, a substance known to the State of California to cause cancer. Avoid inhaling wood dust or use dust mask or other safeguards for personal protection.
I can do all this through him who gives me strength. Philippians 4:13