I’ve been working with some larger multicolor prints recently and noticed that while there was the option to flush to objects, flush to infill, and flush to support, there’s no option to flush to a part of an object (e.g., unseen walls).
A strong example of where this would be useful is decorative prints that are printed in multiple pieces, or that have a large portion that is unseen during regular use (for instance, the back of the multicolor Majora’s Mask print). In the image below, all of the magenta area is unseen and could be used to flush the nozzle, reducing waste.
This could be added by allowing the creation of filaments in the slicer that act as waste/unseen and are used for flush areas that can be painted onto the model. I would think that this could significantly reduce purge volume on these prints and even potentially marginally increase speed by reducing filament changes.
