Detail of the business end (output head).  Brass screws tap directly into the Delrin headstock for adjustment of the mirror holder, which is seated on an o-ring.  The o-ring itself is seated on a machined groove in the headstock.  Just visible thru the amber ZnSe lens is a brass electode, itself tapped for external power connection.

Heavy aluminum channel stock and oak plank supports the laser.

The above view illustrates support and mounting of the laser.

With the focusing lens (here mounted in a holder held in a vise between the output head and the target) the laser melts the surface of this basalt rock block.

THANKS FOR SHARING YOUR DESIGN, FESTER.