https://twitter.com/CNC_Kitchen/status/1720374528985973115
Toooons of waste. 2.5/1 waste/print ratio. wow.
timelapse: https://twitter.com/CNC_Kitchen/status/1720410680736489913
this post was submitted on 03 Nov 2023
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I wonder if a slicer could hide the transitioning color inside the print instead of making a separate purge tower. I don't know that the cause of the filament popping is, but maybe that could be minimized like this too?
The Bambu slicer does offer such a thing, the results vary depending on the colors in question though, if the color it's purging is black, and most of the print is white, then the black that gets flushed into the infill is going to be pretty visible under the white outer walls. This can be mitigated by thicker walls, and ofc its less of an issue when dealing with colors of different, but similar, shades
I've found that the best way to reduce multicolor waste is to try and setup your model in the first place so that it uses the smallest number of color changes possible, but ofc whether or not you have much control over that will depend largely on the model in question
What would be nice would be a way the waste can be used to print something else like a functional part that colors won't matter.
Yeah like during the infill portion of each layer, swap the color. But I can only see that work if each layer is a separate color.
If you have different parts of the same layer, you could jump back and forth to the infill to purge. But you'd need to make sure you have enough inside volume compared to the outside surface area.
Not sure what's the current state of other slicers. but PrusaSlicer has a setting that does exactly that, called 'Wipe object'.
As others have said few slicers support printing a second model as the wipe/purge object, but Stefan from CNC Kitchen happens to be one of the few people on earth that owns a filament recycling setup so these poops might get recycled as well.
That would involve remelting the filament and re-extruding, which can be bad for strength. Maybe you could print the functional print at the same time and use it as the purge tower?
That's not a bad idea if you have a part big enough to print and space on the bed for both. I'm curious how strong the print would be if it's made up of a bunch of partial lines. It would be like multiple failure points per layer. But if the part doesn't need that much strength, it would be convenient.