I’am new with 3d printer and I had assembled a Vellemann 8400
My first print was a desaster because my Isolator is crashed.
The noozle came out withe the thread from the Isolator I think it will be too hot.
Witch Temperature shown on the Display is the right temperature for
PLA filament.
Excuse me I’am from Germany and my english is not so good.
Dear hoerby,
welcome to the club. You just trapped in the most critical weakness of the K8400. You may search the forum for a lot of other guys sharing a similar fate like you. The key factor is the thermal link between the heater block and the thermistor. A good thermal contact is essential for a proper thermal control.
I had good luck and got only some clogged nozzles, which I damaged by the attempt to make them running again.
Because of the several problems and misunderstandings as a beginner I did a comprehension of my personal experience to share with any interested K8400 user:
http://ddd.k8400.hoehnemann.net