G00 (rapid traverse) is the fastest motion command in CNC programming—and also the fastest way to crash a machine, destroy a spindle, or scrap an expensive part when used incorrectly. The biggest misconception is that “G00 Z100” or “G00 Z-100” ...
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CNC Safe Start Blocks & Crash-Proof Program Templates: The Ultimate 2025 Guide (Fanuc, Haas, Siemens)
cnccodeA “safe start block” is the single highest-ROI habit in CNC programming because it prevents the most common (and most expensive) crashes caused by leftover modal states from the previous job. Modal G-codes stay active until changed—meaning your program can ...