Ok. I hope here is someone who can help me out. I have cheap Chinese 1610 cnc mill what I use for pcb milling. The machine was working fine before, but little while back. my Card get broken. I bought new card and it is Cronos Maker gbrl 1.1 card. After I change the card. machine started working. But every time I try to cut pcb it cutting so near traces that I don't have any traces left. My design has 0.4 mm traces but it it cutting all off.

I have try adjust settings but nothin helps. Desings is made with kicad and plotted as Gerber files. Gerber files are made to Gcode with Flatcam and I use Chilipepper to run decode and machine.

I have no ida where is the problem. I use 0.1mm 30 degree V shaped bits, and cutting depth is 0.05mm to 0.07mm. I have try to make isolation with one pass and 3 passes, but results are always same. I try attach picture here. Here is my Grbl settings.

$0=10
$1=25
$2=0
$3=1
$4=0
$5=0
$6=0
$10=3
$11=0.010
$12=0.002
$13=0
$20=0
$21=1
$22=1
$23=0
$24=25.000
$25=500.000
$26=250
$27=1.000
$30=10000
$31=0
$32=0
$100=800.000
$101=800.000
$102=800.000
$110=800.000
$111=800.000
$112=800.000
$120=20.000
$121=20.000
$122=20.000
$130=160.000
$131=100.000
$132=45.000

and picture in attachment...

I really hope someone can help me out!

-Miikka