For those of you with a filament printer (e.g., Prusa), I modeled a funnel to use in my resin cleaning process. Initially, I just wanted a really big funnel that I could use for straining resin and cleaning solution. After a couple of tweaks, it ended up being integral to my cleaning process. So I am sharing with you.
Though I optimized for a 0.6 mm nozzle, it should print fine with a standard 0.4 mm nozzle.
FEATURES:
Neck of funnel has air gaps for easy draining and no pressure build up.
Neck of funnel is wide for easy flow, but narrow enough to fit into most resin bottle sizes. (It will fit into those Elegoo resin bottles with the skinny necks.)
Body of funnel is large enough to hold all of the resin from the reservoir.
Removable filter cap creates a large surface area for faster filtration through a coffee filter.
Design to be printed without supports (wide side down).
The author hasn't provided the model origin yet.