So. The winter was long and tumultuous, I did not get to work on the boat much. I did manage, however, to finish the heat box I was dreaming about while battling my assortment of cold resins.
So I built an insulated box out of cheap(-ish) 15mm interior grade ply, 5cm foam insulation and 3mm plywood for interior walls.
With the box finished some enclosure for the thermostat electronics needs to be built:
The electronics and software are way overbuilt (probably where it does not matter) and possibly lacking in areas that will prove to be important. But at least I can reasonably safely heat resin in plastic bottles as the heater temperature is one of the many settable parameters :) Truly nerdy business, but fun nonetheless.
All together it looks like this:
Inside, a 230V, 200W silicone heating pad (from a 3d printer bed) - I did tear out the thermistor (no documentation) and replaced it with a DS18B20 temperature sensor.
... and after some last minute changes to tune everything up it's done.
Starting tomorrow I will get to work on the boat. I need to get it ready for transport within 2 months. Plan is to get the cockpit and deck done, glass the hull and paint it. A usable interior would be a nice bonus, but is non-critical in view of the constraints. I can finish after moving it to a new shop.
Updates will now be more frequent as I need to get crackin'. See ya.
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