Often, you cannot see through your CNC mill’s cabinet window because coolant is splashing on the inside of the window. Rather than create a mess by opening the door to take a peek, install this simple window air blast tube. Your parts list will include a 12″ piece of copper tubing and an M10 lamp nipple with nuts and washers salvaged from an old desk lamp’s bulb socket. Soldered the tube into the nipple and slightly flattened the end of the tube. Install it on the door inside the cabinet view from outside. The slightly flattened end of the copper tube is barely visible near the window’s upper edge. Now, to see, insert an air hose tip into the port and blast away the coolant.
Tom Nichols
Automotive Machine & Supply, Inc
Cleburne, TX