Abstract: The blow off unit is an open top box with the front lower than the sides and back. A splash shield is placed at an angle at the back of the work area to deflect the blow off air stream and debris down into the collection filter. A space is left behind the splash shield to allow the blow off air to escape after it passes through the filter. The filter is a standard HVAC bag type air filter which hangs down into the box with its frame resting on the angle frame of the unit. A wire grill covers the filter for protection and to provide a place to lay parts. In use, the operator holds the part in the work area of the unit with one hand and blows the coolant and debris from the part down into the filter. The blow off compressed air is the only power source required for the unit. When the filter becomes dirty and/or saturated with coolant, it is replaced with a new one.