Expanding K-Cup Coffee Holder

This design allows you to upcycle used Bambu Lab spools - and likely other spools that have filament-holes offset at 180 degrees - as bases for holding K-cups in a Lazy-Susan style configuration. 

This does require additional hardware (M3 Nuts, M3x30 screws).

These are stackable, so you can have more than just one or two if you need them. The holder-pieces unfold outwards to reveal more storage. 

The Spool Shafts are intended to work for a variety of spools. You will need to squeeze the spring “wings” inward to insert them into the middle of the spool. 

Supports are needed for the Spacer and Spool Shaft. 
If you have a multi-material system like an AMS, I recommend using PETG as an interface layer with a 0.0mm offset distance.

You will need to print:
(1) KCup Holder Foot
(1, per layer) KCup Holder Spool Shaft
(1 less than your number of layers) Spacer
(2, per layer) KCup Holder Body
(1, Optional) K-Cup Holder Cap

Hardware: 
(2) M3 Nuts, per layer.
(2) M3x30 Screws

Assembly:

1. Place the K-cup Holder Foot down. 
2. Spool Assembly:
   1. Place an M3 Nut into the top hexagonal slot near the edge of each KCup Holder Body. 
   2. Press the nut all the way down until it bottoms out in the recess.
   3. Place the KCup Holder Body into the spool, aligning the hole beneath the nut up to one of the spool's filament-holder-holes.
   4. Push an M3x30mm screw through the outside of the hole, into the KCup Holder body, and screw it into the M3 Nut. Do not tighten so far that the Holder Body cannot rotate around this screw. 
   5. Repeat steps 2.1 through 2.4 for the other side of the spool. 
   6. Squeezing the Spool Shaft wings inwards, insert a Spool Shaft into each filament spool. 
3. Place the spool shaft onto the Foot piece.
4. If adding more layers, place a Spacer on top of the previous layer's Spool Shaft.
5. Repeat step 2-4 for each additional layer.
6. Once the desired number of layers are assembled, you may choose to place the Cap piece on top. This is for aesthetics only and is not required. 

Filament: 
Except for the Spool Shaft, any filament may be used. 
For the Spool Shaft, I recommend not using any PLA Silk or other particularly brittle filament. The Spool Shaft is designed to work with PLA, even though PLA generally does not have flex. As the Spool Shaft springs only need to be compressed once, this is not likely to create issues. If you have concerns with PLA's elasticity, then I recommend using PETG. 

Print Settings:
Most print settings should function fine here, as long as your printer is well calibrated to have good tolerances. The tolerance on these parts is intended to be a little loose for a variety of printers.