Yes of course I was thinking of heat sink the head and driver!
Sorry english is not my first langage and sometimes I do mistakes
In this case my heat sink for the laser head is a big piece of aluminium, 20mm tickness (to adapt the beam height), and this piece is fixed on the base plate. The driver is just fixed on the base plate. All without thermal grease. This works very well, nothing get warm, and everything is connected to ground![]()