Why is fusion 360 cutting air the first 3.45mm?

[Anonymous]

Hi,

Fusion 360 firsttime user, and I love it. But why is Z cutting air the first 3.45mm? My top position is set to top-model. clearance en retract set to 5mm. Everything left as default.

TEST FUSION MACH 3 PROCESSOR)
(T1  D=4. CR=0. - ZMIN=-14. - FLAT END MILL)
G90 G94 G91.1 G40 G49 G17
G21

(2D ADAPTIVE1)
M5
M9
T1
S5000 M3
G54
M9
G0 X16.526 Y16.131
G43 Z5. H1
Z3.45                                   <----------------------------------------------------------------------------
G1 Z3.05 F300.
G3 X13.474 Y13.869 Z2.842 R1.9 F200.
X16.526 Y16.131 Z2.633 R1.9

[Anonymous · Accepted solution]

I would say  look at your top hight and ramp clearance hight in the linking 

[Anonymous · Accepted solution]

Thank you, that's fixed my problem.