Mazzer Mini Chute

I got really tired of grinding a mug of coffee at a time using the original doser that came with the machine.  There are several other replacement chute designs, but I wanted one that's easy to clean.  This design is based on the dimensions of the doser, so the original cap should fit perfectly.  That may also be true for the timer-cap, but I don't have that model to test it out. Including the FreeCad v1+ file in case anyone wants to remix this.

I printed mine at 0.2mm layer height, using tree supports at 60° overhang, 10% density.  It's important that the inner chute be as smooth as possible, so try to locate the Z-seam on the front or one of the sides.

Also included:

• A glue-on rear-catch to secure the bottom end to the grinder case, since the original doser bottom screws aren't used.  There's an alignment pip to make sure you get it oriented correctly.  Optional.
• A glue-on exit spout to help corral the grounds straight down into the porta-filter. Optional.
• The mostly parameterized FreeCAD model in case you need to tinker with anything or want to remix this (Non-commercial reuse only).  The varset is located under the Chute part , under “Boolean”, then under “Body”.  Warning: It's a complex part, changing some variables may cause unintended consequences (like broken filets).

Changes:

• v8 → v10:
  • Reorganized/simplified model's component part structure to simplify future changes and/or tinkering.
  • Reduced wall thickness by nearly half to save plastic, reduce printing time, and help prevent accumulation around the grounds entrance.
  • Enlarged grounds entrance opening to help prevent accumulation.
  • Enlarged funnel exit diameter to force a greater funnel angle.  This should promote better grounds flow and help prevent accumulation.
  • Added fillet at top of funnel interface with inside wall, to help prevent accumulation.
  • Removed support-blocker. It's not necessary if slicer overhang angle is set to 60°.