When setting up a job on one of our milling machines, we lightly run a fine grit whetstone lightly over the milling machine’s table to make sure there are no tiny dings, lumps or bumps on the table that may cause inaccuracies when milling. The whetstone eventually becomes clogged with coolant, dirt and debris. We clean ours after each use by spraying WD-40 on a piece of cardboard, then rubbing the whetstone on it. One or two applications will leave the stone nice and clean and ready for the next use.
Tom Nichols
Automotive Machine & Supply, Inc
Cleburne, TX
