BUFFER UNIT - Setup for COREBOXX
Description
PDFⓘ Real pictures are coming soon!
| The BUFFER UNIT is a premium rewindable spool holder for the MMU3/MMU2. It's compact and easy to use, opposed to the official clunky setup for the MMU. Compatible with the Prusa MK4, MK3, CORE One, Original Prusa Enclosure and more. |
This model provides the parts & assembly for mounting the BUFFER UNIT specific for @Voxel3D:s COREBOXX.
→ You can buy the BUFFER UNIT itself by clicking here!
Update 18 April - Hole positionThe M3-screw holes have been moved forward 10mm, preventing the side modules from hitting the frames. |
Setup for COREBOXX
The COREBOXX officially supports the BUFFER UNIT. Sander and I have collaborated closely to offer a premium spool holder alternative for his great enclosure.
The BUFFER UNIT itself can snap onto specially designed brackets that's secured to the bottom acrylic panel. You can therefore install the BUFFERUNIT one spool holder/module at a time, making installation way easier. The BUFFER UNIT also supports the same 686 ZZ bearings found in the COREBOXX's blurolls-kit, so you don't need to buy new ones.
Parts List
| Item | Quantity |
| PTFE-tube | N/A |
| M3 hex nut | 4 |
| M3x10 screw | 4 |
Printed parts
The print files tell you how many of each part you need to print. Note that the Side-panels are multi-colored prints.
Print settings
NO SUPPORTS, 0.2mm layer height with 15% infill. PETG is recommended. See part specific settings:
R-Side-panel & L-Side-panelMulti-colored-print, the colors have been split into multiple parts labeled with each respective color. Import all parts together to combine in to a single multi-material part. |
Assembly Manual
ⓘ This is part 2 of the BUFFER UNIT assembly! Find part 1 here.
⚠ The setup for the COREBOXX is only compatible with BUFFER UNIT version A2 or later.
Tool preparation
 | Prepare the following tools: 2.5mm Allen key (for M3 screws) PTFE-cutter/Cutting pliers Measuring tape (for measuring PTFE-tubes). |
Step 1 Prepare parts
 | Prepare the following items: PTFE-Tube 1-PTFE-Guide (1x) 2-PTFE-Guide (1x) 3-PTFE-Guide (1x) 4-PTFE-Guide (1x) 5-PTFE-Guide (1x) |
Step 2 Connect tubes to the PTFE-Guides (1/2)
  | Measure and cut a PTFE-tube to the length of xxx. 🟠Insert the tube through the left hole (L) in the 1-PTFE-Guide. Make sure it's fully inserted. 🟡Flip the lever to lock the PTFE-tube in place. |
Step 3 Connect tubes to the PTFE-Guides (2/2)
 | Repeat the previous step using the following corresponding tube lengths: 2-PTFE-Guide - xxx 3-PTFE-Guide - xxx 4-PTFE-Guide - xxx 5-PTFE-Guide - xxx |
Step 4 Attach the PTFE-Guides
  | There are slots on the front side of the BUFFER UNIT modules. 🟠Insert the 1-PTFE-Guide through this slot on a module. 🟡Repeat this for the rest of the PTFE-guides and modules. |
Step 5 Route the PTFE-tubes
  | We're now going to route the PTFE-tubes. Flip the modules over. 🟠Snap the PTFE-tube onto the clip next to the “X-slot” (see picture) 🟡Now, snap the tube onto the back clip. Repeat this with the rest of the modules. |
Step 6 Prepare parts
 | Please prepare the following items: R-Side-panel (1x) L-Side-panel (1x) R-Bracket (1x) L-Bracket (1x) M3 hex nut (4x) M3x10 screw (4x) |
Step 7 Attach Side-panels
  | 🟠Attach the R-Side-panel on the right side of module 1. 🟡Attach the L-Side-panel on the left side of module 5. |
Step 8 Brackets: Insert hex nuts
 | Let us prepare the brackets. 🟠Insert 4 hex nuts according to the picture. |
Step 9 Attach brackets
   | ⓘ Real pictures are coming later! 🟠There are four holes on the COREBOXX's bottom panel. 🟡Align these with the holes of the R- & L-Bracket 🟢 Secure the brackets from underneath with four M3x10 screws. |
Step 10 Attach modules
  | 🟠Snap module 5 onto the leftmost bracket. 🟡Insert the rest of the modules, inserting them in descending numerical order. |
Step 11 Connect tubes to MMU
 | 🟠Insert the PTFE-tubes into the MMU according to the corresponding MMU filament-number. |
Step 12 Assembly is done!
 | Congrats, the Buffer Unit setup is now completed! I've never put this much work into a single project, I really hope you like it! If you like the setup, it would truly mean a lot to me if you drop a comment or make! Tell me what you like/dislike in this google from! |
Version history
Previous version updates will be published here.
Tags
Model origin
The author remixed this model.
Differences of the remix compared to the original
Adds brackets for connecting the BUFFER UNIT inside the COREBOXX
