nice looking machine.
If you want something that would be sufficient to prevent freezing but is less than a heater, you might consider a heating pad. I'm not sure I'd use one meant for people, although that would probably work as well, but the homebrew store sells small pads to wrap around a carboy of beer/cider/etc that would be pretty safe to leave wrapped around your laser under the blanket. They're cheap and don't draw much electricity, certainly less than a heater.


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