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I'm not sure if it make sense but... is it possible to put the printer inside a vacuum chamber so there is no air to fill the internal bubbles?
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Cooling would be an interesting problem. Atmosphere takes away the heat pretty readily.

You could have a cooling plate the work is on. But the higher temperature difference is apt to cause warping.


Vacuum filled pores would also be an issue.

I expect them to collapse due to surface tension or something.

[Slightly related https://en.wikipedia.org/wiki/Cavitation The problem is that the bubbles are filled with vapor instead of CO2 like in sparkling water.]




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