Help needed, new to cnc and having cut depth issues

[dazp1976]

Hi all, I am new to CNC and the forum. I have recently built an Ooznest workbee CNC 1500 x 1500 and I've fitted a spoiler board and when I have come to surface it, i have run into the issue of the router coming down but not enough to reach/cut the spoilerboard. I am on Vcarve pro and I have set the cut depth to 0.3 mm and the start depth to 0 mm. I have used an xyz touch probe that came with the machine to show it where the spoilerboard surface. I am going mad trying to sort this out so if any CNC wiz can help me figure out this problem it would be greatly appreciated.


Thanks.

You say 0.3. Don't you mean - 0.3 (negative)? As in below zero.