How Do You Zero A Bridgeport Milling Machine?
In order to machine metal, wood or plastic accurately in a manual mill such as a Bridgeport, it is essential to accurately set your zero point. This way, you can use the micrometer wheels to place your drilled holes and endmill cuts to the desired locations. If you do not use these measuring devices or if you set them incorrectly, your parts will not be correctly cut and drilled as specified on the print. Insert the tool you will be using into the spindle. Whether you are using a drill chuck and a drill or an endmill is irrelevant. Tighten the tool holder using a large wrench on the nut at the top of the spindle head to secure the tool collet. Use the hand wheels located on the front and right side of the table to eyeball center. Place the tool location somewhere near the center of the table. Loosen the outer ring of the micrometer wheel located on the front hand wheel, which controls front to back movement of the work table. Spin the micrometer measuring ring until the line on the inn
