PlasmaC Voltage Divider

Change pierce delay to something much smaller, like 0.2 for up to 5mm thick, 0 for up to 2mm and 0.5 for 5-10mm, etc.
Also show us other settings and the main screen while cutting.

As Tommy said, it's difficult to say without seeing all of your settings and such.  The sputtering is likely a connection issue of some sort, but the dive looked to me like there's something set incorrectly.  Looked like a move to cut height that was in the part rather than above the part.

Thanks.
I tried 3mm thick steel and attached the clamp directly to the metal and it cut as it should.

When I do a torch-test with 3 seconds pulse then I read a voltage of 180V on the plasmac-screen. Is that a plausible value ? 

Is it possible to get a table with cutting-settings for different thicknesses from sb. who also uses a Stahlwerk-Plasmacutter or comparable so I don't neet to try and waste so much metal ?

zzrzzr wrote:

When I do a torch-test with 3 seconds pulse then I read a voltage of 180V on the plasmac-screen. Is that a plausible value ? 

Yes it is

zzrzzr wrote:

Is it possible to get a table with cutting-settings for different thicknesses from sb. who also uses a Stahlwerk-Plasmacutter or comparable so I don't neet to try and waste so much metal ?

That will not help you much, you have to do your tests and decide on results as there are to many conditions that will inevitably change the cut quality, like: air pressure, air moisture, nozzle type, cut height, cut speed, type of material (all mild steels are not the same), etc.
Try searching this forum, i have explained several time in detail how to test and adjust for quality cutting.