Endmill plunging full depth when pocket cutting

g sender 1.6.1

30x70 longmill

sienci spindle

vectric vcarve pro 12.509

task: pocket a .25" deep pocket in a .75" board

zero of the surface and center of work piece

end mill plunges full depth .75"
checked all my setting everthing checks out
what is going on?

@2Tall In Vcarve material settings, Z0 is set to the material surface, correct?

How did you set Z0 in gSender?

I agree with gwilki. Make sure you have Vectric configured for material surface not machine bed. It’s easy to miss especially if you switch back and forth.