RE: more poop than expected?
Or, print in different colors for the different materials, making it easy to separate out the nerds by color, and therefore material.
but yeah, if you print both PLA and PETG or whatever in the same print, and they're both white or black... forget about it.
RE: more poop than expected?
Had exactly the same thought, but since the basket is fixed from the outside through the handle, making a larger hole in it and changing the geometry of the basket to slide the poop outside shouldn't be a challenge as soon as we get the parts on printables, I think this will be a very popular mod as well.
To be perfectly honest, I feel like the bin to collect priming poops is a little small and seems impractical to empty every now and then. I would have preferred a purge shoot like Bambu and many other printer manufacturers include in their printers, to direct the waste outside the printer.
Now that the right side pocket of the C1 no longer is intended to place a filament spool, I figure there’s ample space to modify it for such a purpose..
RE: more poop than expected?
Part of this may be a design compromise for the upgrade, a modified side panel would add to the cost, and may not suit everybody. I'm sure we'll see some user designed mods in the coming weeks.
RE: more poop than expected?
There is a hole already to allow for the filament to enter the machine, I frankly can't remember how big it is but if it used to hold the poop basket in, it should be big enough to let the poop out...
Part of this may be a design compromise for the upgrade, a modified side panel would add to the cost, and may not suit everybody. I'm sure we'll see some user designed mods in the coming weeks.
RE: more poop than expected?
Well I take the view it is better to give people options rather close off choices by design.
Prusa have spent engineering effort to reduce the amount of filament waste which is 95% of the way there, the last 5% is to help deal with the filament waste that does get produced. Everything needed is there, it just needs that last bit of effort to close the environmental loop.
Mind you, all this multi-material printing creates an environmental/recycling nightmare as it isn't viable to separate anything so it will either end up in landfill or get burnt for energy recovery, not sure which is worse!
Who actually prints a material type ID on their models for recycling? Prusa Slicer can do this.
Or, print in different colors for the different materials, making it easy to separate out the nerds by color, and therefore material.
but yeah, if you print both PLA and PETG or whatever in the same print, and they're both white or black... forget about it.
RE: more poop than expected?
Forgive me if it's already been mentioned, but can the waste bin at least be split in 2? Then can parameters/config for the print, recognise the filament that is being purged and drop it in bin 1 or 2? I have no experience with the programming, but in the g-code will it have a material marker associated with each tool head which can achieve this? In my mind this is simple in theory, but again I have no working knowledge of the configuration of the programming.
RE: more poop than expected?
So for that to work, we would need a redesigned side panel as there just isn't any proper way short of getting a grinder out. We will probably change the design in the near future for "new" printers that are ordered, and also make it available as an optional extra on the store for older models if they want to have a less "hacky" option of getting it to work that way.
From my experience the bucket would only start to cause problems at about 4000 color changes and there are very few prints realistically coming close to that, but I know many users like to push the machine as hard as I do, so having a better option is always nice.
RE: more poop than expected?
@tommy_prusa3d-cm do you think there is enough of an angle to make a slide -instead of a basket- for the poop pieces to slide down and enter the existing hole on the panel? (
picture taken from the assembly instructions)

RE: more poop than expected?
I'm not sure whether the bin can be emptied through the side, but there is an interesting feature visible on it. It might be a movable gate that allows pellets to be discharged from the side—just a guess based on the Instagram video and the screenshot.
Regardless, a version that exits to the side would be an easy solution to implement. As for sorting, to me that's more of a nice-to-have feature rather than a requirement.
I'm more exited that this will have better cooling the XL.
Posted by: @supercuriousfox
To be perfectly honest, I feel like the bin to collect priming poops is a little small and seems impractical to empty every now and then. I would have preferred a purge shoot like Bambu and many other printer manufacturers include in their printers, to direct the waste outside the printer.
Now that the right side pocket of the C1 no longer is intended to place a filament spool, I figure there’s ample space to modify it for such a purpose.
For separating multi-material poops I imagine you’ll need separate silicone nozzle wipers / “prime slots”, since that is where the prime poops are formed and fall out from. Not sure how many will fit there.
RE: more poop than expected?
I'm not sure whether the bin can be emptied through the side, but there is an interesting feature visible on it. It might be a movable gate that allows pellets to be discharged from the side—just a guess based on the Instagram video and the screenshot.
Regardless, a version that exits to the side would be an easy solution to implement. As for sorting, to me that's more of a nice-to-have feature rather than a requirement.
I'm more exited that this will have better cooling the XL.
Posted by: @supercuriousfox
To be perfectly honest, I feel like the bin to collect priming poops is a little small and seems impractical to empty every now and then. I would have preferred a purge shoot like Bambu and many other printer manufacturers include in their printers, to direct the waste outside the printer.
Now that the right side pocket of the C1 no longer is intended to place a filament spool, I figure there’s ample space to modify it for such a purpose.
For separating multi-material poops I imagine you’ll need separate silicone nozzle wipers / “prime slots”, since that is where the prime poops are formed and fall out from. Not sure how many will fit there.
RE: more poop than expected?
I'm not sure whether the bin can be emptied through the side, but there is an interesting feature visible on it. It might be a movable gate that allows pellets to be discharged from the side—just a guess based on the Instagram video and the screenshot.
Regardless, a version that exits to the side would be an easy solution to implement. As for sorting, to me that's more of a nice-to-have feature but not a deal breaker.
To be perfectly honest, I feel like the bin to collect priming poops is a little small and seems impractical to empty every now and then. I would have preferred a purge shoot like Bambu and many other printer manufacturers include in their printers, to direct the waste outside the printer.
Now that the right side pocket of the C1 no longer is intended to place a filament spool, I figure there’s ample space to modify it for such a purpose.
For separating multi-material poops I imagine you’ll need separate silicone nozzle wipers / “prime slots”, since that is where the prime poops are formed and fall out from. Not sure how many will fit there.
RE: more poop than expected?
Forgive me if it's already been mentioned, but can the waste bin at least be split in 2? Then can parameters/config for the print, recognise the filament that is being purged and drop it in bin 1 or 2? I have no experience with the programming, but in the g-code will it have a material marker associated with each tool head which can achieve this? In my mind this is simple in theory, but again I have no working knowledge of the configuration of the programming.
Apologies if I was not clear, (very possible 😅) but if you were printing in PLA/PETG/TPU with either/or supports/details/features, could the software/firmware/tools not differentiate between which poop to poop in which 'section' of the bin?
RE: more poop than expected?
Forgive me if it's already been mentioned, but can the waste bin at least be split in 2? Then can parameters/config for the print, recognise the filament that is being purged and drop it in bin 1 or 2? I have no experience with the programming, but in the g-code will it have a material marker associated with each tool head which can achieve this? In my mind this is simple in theory, but again I have no working knowledge of the configuration of the programming.
Apologies if I was not clear, (very possible 😅) but if you were printing in PLA/PETG/TPU with either/or supports/details/features, could the software/firmware/tools not differentiate between which poop to poop in which 'section' of the bin?