Prusa Hight Temp Hotend - Feedback
Hello all;
Kind of piggy backing off a redit post that was created to get some feedback on the upcoming high-temp hotend.
( https://www.reddit.com/r/prusa3d/comments/1rqp8hw/prusa_hight_temp_hotend_feedback/ )
(ALSO before anyone asks, yes I saw the community project here as well 🙂 )
So...
What materials would you use for a high temp nozzle for?
The current design is set for the CORE One and the Core L since they are both are already enclosed, but would there be interest for those people who have a MK4S? Since most of the high temp material require an enclosure, and also ambient temperature, would having the high temp hotend expanded to other printers be of use?
I will take the feedback here and submit it to the department working on the project
Shane (AKA FromPrusa)
RE: Prusa Hight Temp Hotend - Feedback
More important to me than a HT hotend is an actively heated chamber. That aside I would love to be able to print PPA at a higher temp. As for the HT hotend on an unenclosed printer, can't think of a use case.
RE: Prusa Hight Temp Hotend - Feedback
Good morning.
This is a topic that I am currently very interested in. My C1 is already running at more than 290 degrees, and I will be testing with other filaments (PPS, etc.). 320 degrees is already stable.
From my own experience, the MK4S would actually have a better chance of coping with the brittle material than the C1. The reason for this lies in the way the filament is wound onto the roll and how this bend is fed to the extruder.
Currently, printing with PPA-CF or PPS is not possible in the C1 without a minimum change to the idler. The MK4S has it easier – the filament can be fed straight from above and the bend of the brittle filament can follow the curve of the extruder.
It is more difficult on the C1. The bend in the filament is twisted 180 degrees and the risk of it breaking is inevitable. I had to find this out for myself and it has also been confirmed by other forum members. If there had been enough space, Prusa would have preferred to move the filament feed to the other side.
As for the printed parts on the MK4S, Prusa could offer this as a kit so that all PETG parts are replaced with PCCF.
Active heating for the MK4 enclosure will also be essential for objects that can be printed with HT printing. Small objects or prints that remain a few centimeters above the print bed are not interesting; any MK4S with HT conversion can handle them. But the further the extruder moves away from the print bed, the more the heated room air has to help.
The Buddy board on the MK4 should then also be moved outside (personal opinion) ... unless Prusa confirms that the hardware can withstand this.
Mods for Core One: Core One HT 450 degrees, Comfortable display , Very fast print start and Reducing noises
Mods for Prusa XL: Very fast print start