kotasu metal table

working in winter on a metal table isn’t that nice. as maarten molenaar discovered a few years ago. we both agreed on it and though about a “fix”for it.
Today i implemented it and I have to agree it works nice and a pleasure to work on it. under the metal table i made a wooden structure to support it and them mounted a kotatsu under it with ventilation holes directing the hotter air to escape passing the metal table and so heating it.