Ok im having problems cooling my Hotend, i already tried disaassebling the hotend and cleaning, now it has a 2mm gap for the heat break, even used the M1006 command, on usb stick and live printing, still cloging at 10-15 mins after starting a print, any ideas??
Im using a Craftbot, all metal hotend, 245c and eSun Petg
Sounds like heat creep. Looking at their website they have support options. I would ask them to help with your issue, they know their machine and should be able to help you troubleshoot.
Side note M106 is normally for parts cooling not the hotend and will have no effect on the hotend cooling fan.
Did you buy the all metal hotend from http://craftbot.nl or http://craftbot.de (both run by architecture bureau Balans as a Craftbot reseller) or from another source?
The all metal hotends from the Balans store are modified E3D V6 types and come bundled with all additional parts for the hotend swap, including an ABS fan duct that guides/concentrates the airflow from the original hot end cooling fan towards the new hotend. This should optimize the cooling, especially in comparison to just running the hotend fan with an unguided airflow like for the original hotend.
By the way, I’ve purchased the replacement kit and plan to install it sometime in the next few weeks.
http://craftbot.nl
@Markus_Dieterle Actually i was one of the first ones to get that upgrade from Bart, My problem seems to be the extreme sensibility of PETG, i never had problems using ABS with this hotend, actually i love it, i can hit print and get away for hours till its over, but when it comes to PETG, its a pain on the ass.
@Matt_Barth checking on their site already, my idea was to add a second cooling fan of the same size on top of the original one, it might help with the air flow, if not will try adding a bigger fan and a fan duct due to the size restrictions on the craftbot.
@lightshadown I see… so far, I’ve only printed PETG with the standard hotend, using the medium temperatures within the range stated by the filament supplier (need to look up the exact number, but I think I had the extruder running at 225 C, and the bed at 60 C). That worked quite well, but I had some clogging when I changed back to PLA - it seems even with the higher temperatures during filament swap, some PETG was left in the extruder.
Have you tried a different brand of PETG? Or maybe putting in a new teflon tube?
Then again, the extrusion speed might also be something to consider, especially in combination with the extruder temperature.
Ok i spoted the culprit, it seems to be a defective transistor, in the midtime i rewired the cooling fans for the bed and now i have 2 fans cooling the extruder and now im up and running.
One thing to point out, the fans are blowing air in, rather than sucking out the hot air, this seems to stabilize the temperature, its so stable that it never moved from 245 in the entire print and that was a 2h print, will try a longer print later