oki, i dono it may not be the correct place to put this stuff, but i think everyone should be concerned.
After a bit of blabla with a Chinese supplier i manage to have a discount on a "infrared" heater starter kit (free shipping). lets call it my "black friday regalo": This is a carbon microfilm that can be used in many several ways.
You can give it a try for a +-30 bucks on alixpress (probably the best place i've ever seen to buy interesting things).
i've already managed (with other system) to heat my home (average 20°C, +-150 m²) using +-10 Kw a day and i'm hoping to reduce it with the help of this micro film.
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Link #1 (the micro film):
https://www.aliexpress.com/store/product/Shopkeeper-2017-Recommend-110W-Meter-50cm-2m-1-Sq-Meter-Far-Infrared-Floor-Heating-Films-With/211348_32786630851.html
Link #2 (the Thermostat):
https://www.aliexpress.com/store/product/New-And-Hot-TF719-16A-Room-Temperature-Controller-Electric-Floor-Heating-Manual-Thermostat/211348_32407844482.html
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There's another 4sqm kit with an electronic regulator ...a bit higher, without free shipping.
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yes, it has nothign to do with 3d stuffs but working in a warm cool place it better than have your toes frozen ! 😉 if U DON'T KNOW how all of this work...please, don't install anything.