Running the glowforge dry

If I were to run a cut where the laser was running fully powered over the honeycomb (or GF base if the honeycomb were removed) with no material in the glowforge, do I run any risk of damaging the unit?

I’m imagining a misplaced cut-line that’s not over any material running full power and slow (like a pump running dry which can wreck it).

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No worries, the focal depth of the laser won’t allow it to cut much below the top of the steel insert. So at worst it might flash any crusties that are clinging to the grill, but won’t harm the chassis of the Glowforge.