58mm (E61) Espresso Accessory Station

Printing

• Any material should be fine--it's not designed to hold food items or be subjected to heat/pressure. I used PETG, but that was to match the filament I used for the tamping stand and portafilter dosing funnel, which are subjected to heat / pressure.
• Designed to print without supports, shouldn't need much infill at all--there are a lot of wide open areas that may suffer on surface quality if you use sparse infill, though.
• It's big. Like… very-nearly-the-whole-MK3s-build-plate-big, so don't be surprised
• Settings (how I printed mine, at least):
  • Prusa Slate Silver PETG
  • 0.4mm nozzle
  • .2 layer height
  • 20% infill (resulted in some surface scarring, but it's not visible on mine when in use)
  • You could probably do this on a .6 nozzle and get nice results
  • Might also be a good idea to try adaptive infill settings; much lower support % until you get around a surface layer, then increasing it there so it's better supported;

Accessories this was designed to hold

(some external product links, none of which are affiliate/ads)

• 58mm tamping tool (Saint Anthony Industries New Levy, but any 58mm tamper should fit)
• 58mm distribution wedge (SAI BT Wedge, but again any 58mm should be fine)
• The oblong tamping stand is the ECM 58mm Portafilter Tamping Station by Dennis
  • The base is designed with enough clearance that this should slot right in, smoothly, and can be easily taken out for tamping and cleaning
  • I also use this part for weighing/dosing beans, and it works very well with both straight and angled “ergonomic” portafilter handles
• The portafilter funnel is part of the Expobar Brewtus IV Coffee Accessories set by That Engineering Guy
  • This funnel prints easily, looks great, and works very well; any 58mm funnel should fit in the intended slot here, but it might not be as clean
  • For what it's worth, I've found that just about any frothing pitcher can nestle on top of this funnel, which keeps the counter space to a minimum (as much as you can say that about a thing this big, I realize)
• The triple portafilter basket holder which fits on the side is 58mm Filter Basket Holder by GustavEstevez on Thingiverse
• I'm using a Pyrex 1003-250CN Heavy Duty Griffin 1003 250mL Beaker to pull shots, and it fits perfectly into the tamping stand for storage

Stuff I've got stored in the open bin at the back 

(to give you an idea of size)

• Random cheap WDT and stand
• Water hardness test strips set
• The cleaning brush and socket driver that came with the Niche Zero grinder
• Coffeetool 3-in-1 Group Brush
• Another group head brush that must have come with the machine; it's a little bit smaller than the Coffeetool
• Rhino steaming thermometer
• An Opinel folding knife and a ballpoint pen… because why not?

Other  things in the photos:

• Greater Goods scale
• 58mm Portafilter Holder for Horizontal Surfaces by shortyjacobs on Thingiverse
  • Printed off a couple of these in the matching PETG and mounted them vertically with command strips--the portafilters drop right in, and rest perfectly at an angle
• Profitec Knock Drawer
• Cortica travel mug that I got through Kickstarter years ago, appears to be in full production now

Misc info:

STLs for the other printed items are included here, in case the original models change or are removed from their sources.

I designed this in Solidworks (joined the EAA in order to get an affordable personal use license and try it out), and ran through a few iterations using Windows 3D Builder to compare it to the various items it's designed to hold, and see how it would all come together. The version uploaded here is the first one I printed, and I've been using it every day since I printed it in early January of 2022. 

The height of the tamping and wedge stand was designed to match the portafilter basket holder, which I tacked to the left side with a little bit of CA glue.

The only thing I might change (if I made any future iterations) would be to increase the clearance depth of the distribution wedge and tamper, but both have enough room that it's never been an issue.