What a simulation can't tell you#

The simulation proves the toolpaths are right: the right shapes, depths and order.

It can't know:

• If your machine is square and trammed.
• If the stock is where you think it is.
• If your clamps will hold.
• If the bit is sharp, or is even the bit the program expects.
• Where you actually zeroed.

If the simulation looked right and the cut didn't, the problem is in the setup, not the G-code. Check Z zero and workholding first.

Before you press Run#

1. Zero X, Y and Z where the export review says.
2. Fit the bit the review names.
3. Watch the first moves before letting it plunge.
4. Keep a hand near the power switch.

How-to: Simulate a job