Angle grinder coolant attachment. 6:01 video:
https://www.youtube.com/watch?v=xmxvLNIBUGE
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Angle grinder coolant attachment. 6:01 video:
https://www.youtube.com/watch?v=xmxvLNIBUGE
That is as much for dust control as for cooling. Another option is put a fitting on the guard attached to a hose.