Router bit not milling full depth

[beemsquar2]

How it would not cut? If something does not cut then the machine pushes it down and it will burn through material and break. So obviously its the CAM. Or the bit slips up in the collet. Or you have a backslash of 3mm, but still...

In V carve there is a Start depth and Cut depth. Set this right. Check then the tool itself from the toolpath window as there you can edit passes and so. If all is right there check your Material setup from the tool[ath window, where you set the safe Z and so.

I am looking from Aspire, but in V carve should be the same or similar

Thank you for your quick reply.
The cutter cuts perfectly, just not to the required depth set in v carve, start depth is set identically to all my other bits at 0.0mm cut depth is set the same as my other bits at 15.6mm to cut through 15mm ply. ( I don't know why, but this depth seems to give me the best finish on the underside and still retains my tabs.
As I say, even if I increase the cut depth to 17mm, it still cuts to just above the tab depth. It is only this router bit I have this issue with, which is odd.
The diameter of the bit is set correctly in v carve at 3.175mm, as an end mill, there is no option to input cutter length. Pass depth is set to 2.8mm, step over at 0.952mm at 30%

Passes in the tool path are set at 5 passes comprising of 3.333 for the first cut and then 6.24, 9.36,12.48 and 15.6mm. As far as I can tell this is all set correctly?

Safe Z is set at 6mm above the workpiece.

Any help with this extra info would be appreciated.

Many thanks

Andy