Heater for filament extruder.

I used a soldering iron Parkside (cheap from Lidl 12 Euro) with adjustable temperature 48Watt.
The second is a soldering iron Lotring 30 Watt (Gamma 5 Euro) to start up the heating the first 15 minutes.
Tube 320 mm length 21,5/16,2 mm diameter.
Hopper Thing 152380.
Use a copper wire and a hose clamp for assembly.
Then isolate.
Temperature test results.
time 48w 30w temp. on top drill & temp. at hopper
0 0 0 20,6 20,1
5 x5 x