Wo uses a fan on the filament/filamentscrew/drivescrew to avoid heatcreep issues?
All works well, TPE TPU, PC, ABS, PET but not PETG which grinds through wenn printing slower than 50mm/s @ 0.2mm
Do you mean on the part of the extruder above the heating element, as standard on e3d?
@Lars_Clausen no not on the cold end. On the filament and/or on the filamentscrew
I’ve never heard of someone using a fan on the filament itself. Maybe on the extruder motor but even then you shouldn’t need it. If your motor gets that hot you’re doing something wrong. Usually heat creep comes from the hotend. In that case I use a fan.
+Peter van der Walt mine is seriously overpowered. Does not mean that the filament melts on the filamentscrew
@Griffin_Paquette the motor just gets like 30-50deg hot. Thats not the problem.
What drive gear are you using?
@Griffin_Paquette the mk7. But doesnt matter. Even on the wade extruder I tried all sorts of drive gears, some were made awesomly nice and hardened cnc maschined and so on. Did not really help. Already got a 40x25mm fan on the coldend but even that did nothing to it ;(
+Peter van der Walt well got an e3d v6. But that has no ptfe liner cause 3mm. And also its not that funny to print nylon and pc with a ptfe liner ;D
+Peter van der Walt well yeah i was thinking about a 1.75 refit but printing TPE and nylon works awesomely well. You mean printing flexible on 1.75mm is easier?
+Peter van der Walt yeah ok. On my old german reprap neo i had 1.75 but the hotend was such a shit that it did not extrude lol. I upraded that one to a jhead which was way better.
Iam wondering. Yeah its way more mass to push and heat in the hotend but your not extruding that fast. Well that should not be my problem right now. Got the extruder so good now i can spit extruded stuff all over the place with way to low temperatures if i want. And when printing big things fast I use a 0.8mm nozzle and 0.5mm layerheight and thats so awesome ;D Even Petg. But printing PETG at 0.1mm layerheight is impossible. No matter how fast i print its not enogh material so the heatcreep gets me everytime. If PC Plus from polymaker wasnt that expensive and more colors were available Ill be printing that all the time lol
+Peter van der Walt well I believe the heat travels up the filament and that gets soft. The theory is that on a retract the softer filament gets sqeezed and ground down.
Theres no bowden ^^ well directly on the drive gear to cool the filament from the top.
+Peter van der Walt real genuine v6
+Peter van der Walt any tips for a mk8 compatible printable design as the “mk10” you linked to?
I’ve been thinking about using peltier. But haven’t tried
Not personally using a fan on filament and drive gears, but this is something common on stratasys fdm equipment.
@VolksTrieb I’ve got a Neo as well, and I outfitted mine with the E3D Lite 6 (one with the ptfe liner). I’ve shot makergeeks PETG through it with no issues. Usually, I’ll admit, at .2mm layer height through a .4 mm nozzle. Maybe, it’s just the filament? I don’t know, just throwing that out there.
@Mike_Learned yes I think its just the filament. Just wont work with no ptfe liner. At work we have a rf1000 which has an peek coldend that works just fine with that petg