Update 5/17/2024: Changed recommendation to higher temp ABS/ASA/PC/etc if printing higher temp materials.
Do you keep getting a little something extra on your nozzle ? Nub Scrub will help you rub it off!
Nub Scrub is a nozzle wiper that cleans your nozzle by adding the silicone nubs from the A1 style of wiper to the PTFE tube from the original wiper.
The model fits on your X1/X1C/P1P/P1S series of printers and cleans your nozzle with an additional cleaning element borrowed from the A1 printer. It helps removes any filament residue that might cause print defects, especially when you change filaments frequently.
Nub Scrub is simple to install and stable to use. It only needs 3 mounting screws, which can be either the original wiper screws or M2.5 screws. It also helps alleviate a common issue with the screw hole in the purge chute which is easily stripped out. But adding 2 stabilizing wall surfaces and a “clip” mechanism, this model reduces the strain on that mounting hole.
Nub Scrub is a fast print with only a few grams of filament and can install quickly. I suggest NOT printing it in PLA for heat resistance reasons. I used Overture green PETG here but if you print higher temperature materials where you heat your bed upto 100+ then ASA, PC, or PACF/PET-CF or other heat tolerant filaments would be better choices. I ended up upgrading mine to Bambu polycarbonate. Dimensional accuracy is important here, so make sure you adjust for shrinkage if you use ABS/ASA or another material prone to shrinkage.
3MF and STEP included. Pre-setup BambuSlicer for bambu users (although I recommend orcaslicer!). Fusion 360 can be uploaded if people want it.
Note: After modeling this I realized my model is similar to, but has improvements over, some other models in the community. I will list the most similar ones as remix sources for the sake of attribution, despite this being designed from scratch.
Printed here at 0.2 mm layer thickness, it needs only a very minor traditional support with paint-on supports when oriented as shown (see also images above in case this is unclear).