# Bear Frame Upgrade 2.1

## MMU2(S) Frame Holder for Bear Frame

### Table of contents
  1. [Introduction](#introduction)
  1. [Pictures](#pictures)
  1. [Compatibility](#compatibility)
  1. [Bill of materials](#bill-of-materials)
  1. [Printed parts](#printed-parts)
  1. [Print Settings](#print-settings)


### Introduction

MMU2 and MMU2S frame holder for the Bear Frame Upgrade.


### Pictures

![MMU2(S) mount](images/mmu2_mount_02.jpg)

![MMU2(S) mount](images/mmu2_mount_03.jpg)


### Compatibility

This MMU2(S) frame holder is compatible with both MMU2 and MMU2S.


### Bill of materials

| Part     | Quantity | Example |
|----------|:--------:|---------|
| M5x10mm button head screw (ISO 7380) | 2 | |
| Drop-in tee-nuts M5                  | 2 | [Openbuilds](https://openbuildspartstore.com/spring-loaded-tee-nuts/) |


### Printed parts

:warning: Warning: It is important to follow the recommended print settings and to **calibrate your extrusion multiplier** before printing the parts (for each and every spool that you use). [Check our calibration guide here](https://guides.bear-lab.com/Guide/Extrusion+multiplier+and+filament+diameter/8).

Use this link to download the STL: [mmu2_frame_holder.stl](printed_parts/mmu2_frame_holder.stl?raw=true)


### Print settings

:warning: Warning: It is important to follow the recommended print settings and to **calibrate your extrusion multiplier** before printing the parts (for each and every spool that you use). [Check our calibration guide here](https://guides.bear-lab.com/Guide/Extrusion+multiplier+and+filament+diameter/8).

  * Slicer : PrusaSlicer recommended
  * Infill type : Gyroid recommended
  * Support : No
  * Brim : No
  * Detect thin walls : No
  * Perimeters width (internal and external) : 0.45mm

| Layer Height | Infill | Perimeters | Top/Bottom Layers |
|:------------:|:------:|:----------:|:-----------------:|
| 0.20mm | 20% | 3-4 | 5 |