Hi Adam,
I have come across the term "sacofoukanim", which as best as I can translate from the Czech, refers to a "vacuum and blow" process for forming glass.
Please could you be so kind as to elaborate on how exactly this would have been carried out? I have been trying to figure whether the vacuum stage is related to glass-feed, or integral with the forming part of the operation.
Thanks in advance,
Regards,
Marcus