I had to reduce a piece of MDF board thickness the other day.
Using my mill and a standard endmill it worked ok,until I picked up my shop vac with a plastic hose to
clean up the DUST and at the same time touched the machine.
I got quite an electrostatic shock.
It's never happened before,with metal cutting so I did a bit more cutting and again same thing happened.
Is the MDF storing static?
John
Spain