<< Galvo speeds >>

I did some successful tests without any stability issues. Finally, max. speed achieved to control laser beam moves (using galvos) is 2350mm/s along whole print bed. Klipper is now working stably at these speeds together with the chambers temp regulation, surface temp regulation, and other features.
According to my calculations we will need print speeds up to 900 - 1000mm/s as a maximum. Laser power is the limitation factor, so this speed is deeply on the safe side of what we can.

<< Surface Heating >>

Past days, I have also heavily tested the surface heaters and their regulation under the real conditions. Printer (both chambers) was preheated during 1 hour to 145°C. Then, surface heaters (4 regulated halogens) were switched on with our own regulation loop to keep the surface at 170°C.

Result: we have found SW and HW setting which holds requested temp quite accurately and uniformly across bed which is important.

Btw., print bed is covered by temp matrix giving us over 200 values every 1/10 of second ;-)