Hotend Fan Speed
Hi,
I assambeled my MK4 now and I start to print some parts. The first 3 part printed perfectyl. But with the 4th part I had problems because of heat creeping (PETG). I realised that the fan speed of the Hotend Fan (the Fan at the heatsink, not the print fan) is not constant. Is that normal? Because for the first print this speed was constant at 8000 rpm, and for the last print with the problems it changed. Attached a picture (PDF) of the first print which is ok and the last one with the problem of heat creeping. Dose anyone has an idea how to solve it?
best regards
Sebastian
RE: Hotend Fan Speed
How are you getting these graphs? Does the MK4 generate them?
RE: Hotend Fan Speed
Prusa Connect
RE: Hotend Fan Speed
Hi
When I read your graph (first post), the maximum fan speed is around 5000 tr/mm, and as average the fan speed is around 3000 tr/mm
According to me, reach 8000 tr/min with this kind of blower, seems very difficult, even under 24v, and the noise should be ........
rgds