this is really risky compared to the few $ you are saving, if manufacturers tell you should use mix distilled water / glycol it's also because if the chiller system gets frozen, you'll have a very expensive maintenance to be done, you'll also have to stop production for some days. Not worth it
if you're still looking for used machines tell me which kind and maybe I'll be able to help you if it fits what my people gets. Anyway about your question I would be very careful about this kind of arguments, I've never heard about low press cutting, and if he's pushing his machine according to...
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