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Renoir1 extruder

Testing 1 - heater/thermistor test

Warmed up heater to target 240 degrees.
Temperature stabilised at 161 degrees - did not climb any higher, probably because of heat loss through the washer and bolts (bolt heads reached 100+ degrees.

Testing 2 - heater/thermistor test

Rebuilt to include a silicone washer in place of resistors. Resitor elements moved to either side of pipe end.
Warmed up heater to target 240 degrees.
Temperature reached  165 degrees but silicon touching resistors started to smoke. Test aborted.
It looks like the resistors do not have enough contact to transfer the heat, heat up over 250, and burn the silicone. Needs to be more surface in contact/ better heat transfer.

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