Since some days I am trying a DIY electrical version.
For heating I use 4 of these 35 Watt ceramic heating elements
www.aliexpress.com/item/4PCS-3-8mmX60mm-220V-35W-Heater-Ceramic-Core-Heating-Element-for-Soldering-Iron/32638840142.html
Around the Supreme block and heaters I wrapped some layers of kitchen aluminium foil.
Then I fixed everything with mica insulation and a clamp.
The mica is taken from a microwave but it is not very suitable for this kind of application. In fact you can use the vaporizer without insulation as well.
With mica the heat up time is:
2:00 minutes = 125°C
2:30 minutes = 153°C
2:50 minutes = 170°C
Without insulation it is only a little bit more slowly. Usually I clear a bowl in 3 hits, after the second hit I switch the heaters of. The temperature will climb to about 190°C.
Only 1 of the heating elements can also get the Supreme up to 200°C but it takes ages and the time from a low temp to a high temp draw is too long.
The ceramic heaters get only hot on the upper half, so the outside part is not so hot.
The electrical cables are still not insulated. Later they should be soldered and protected by a PTFE heat shrink tube.
There is also a electrical grounding missing.
With the cable the Supreme is more prone to fall down, a different standing would be nice.
Right now I just use a simple on/off switch which does a good job. A 300 W dimmer is on the way from China.
Additional I have ordered 50 Watt heaters to see if I can speed up the heating. In 3-4 weeks they should arrive
www.aliexpress.com/item/50W-Soldering-Iron-Heater-Suitable-Internal-Heating-Type-for-ESI-150-50W/32648920464.html
This heater looks also very promising, but I didn't order it. Remember, aluminium has a melting temperature from 660°C.
www.aliexpress.com/item/24V-600C-MCH-Metal-Ceramic-Heater-Plate-Heating-Element-35mm-x-20mm-x-1-2mm/32688099651.html