Will not carve

4/2/21 *I have a sainsmart 3018 unit and all checks ok, I am trying to carve text into a piece of Plastic and when I give the machine the command to carve it stops and says there is nothing to carve. Yet it shows my text on the area where I am trying to carve.
What am I doing wrong.

Your bit is peobably too big for the detail you want.
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