Was doing some plywood sanding today with the ETS EC 150/3 when I started to notice a shrill and whiney sound coming from the sander. I kept hearing it and wasn't sure if it was mechanical or not, but when I stopped the sander, the noise continued and it seemed to be something to do with the airflow through the sander under extraction (CT MIDI I).
It happened for a little while and then I did not notice it on subsequent sands.
It happened for a little while and then I did not notice it on subsequent sands.
