These parts allow you to upgrade your Full Bear 2.0 MK2(S)/MK2.5(S) frame to similar parts than Bear 2.1. The new Bear 2.1 frame is based on the Full Bear 2.0 MK3 frame and is longer and taller than Full Bear 2.0 MK2(S)/MK2.5(S) frame.
These parts are not compatible with Bear 2.1 frame for MK2(S)/MK2.5(S) original Prusa printers.
Measure the length of your Y axis extrusion as seen on the picture below.
- If the length is 311 mm long (±1mm) then you need the parts from the current page. Check Printed Parts section below.
- If the length is 331 mm long (±1mm) then you can use the standard Bear 2.1 parts here.
All files you need to download and print are available in the printed_parts/stl/ folder of this page.
- The parts have been designed and tested with the parameters below and it is important to follow them to avoid issues like part cracking, bad bridging, not enough stiffness or wrong tolerances.
- Be sure to have a well calibrated machine and extruder. Check our guide here for calibrating extrusion multiplier
- Filament type: PETG
- Slicer: PrusaSlicer
- Infill type : Gyroid recommended
- Support : No
- Brim : No
- Detect thin walls : No
- Perimeters width (internal and external) : 0.45mm
| Part | Quantity | Layer Height [mm] |
Infill [%] |
Num. Perimeters |
Num. Top/Bottom Layers |
Note |
|---|---|---|---|---|---|---|
| build_helper_z | 1 | 0.20 | 15 | 3 | 5 | PLA is fine too |
| build_helper_y | 1 | 0.20 | 15 | 3 | 5 | PLA is fine too |
| y_end_caps | 2 (total of 4 parts) |
0.20 | 20 | 4 | 5 | PLA is fine too |
| z_end_caps | 1 (total of 2 parts) |
0.20 | 20 | 3 | 5 | PLA is fine too |
| foot | 4 | 0.20 | 20 | 3 | 5 | PLA is fine too |
| lcd_support_a | 1 | 0.20 | 20 | 3 | 5 | |
| lcd_support_b | 1 | 0.20 | 20 | 3 | 5 | |
| psu_lower_mount | 1 | 0.20 | 20 | 3 | 5 | same for black and silver versions |
| psu_upper_mount | 2 | 0.20 | 20 | 3 | 5 | same for black and silver versions |
| rambo_base_lower_mount | 1 | 0.20 | 20 | 3 | 5 | |
| rambo_base_upper_mount | 1 | 0.20 | 20 | 3 | 5 | |
| rambo_lid_lower_hinge | 1 | 0.20 | 20 | 3 | 5 | |
| rambo_lid_upper_hinge | 1 | 0.20 | 20 | 3 | 5 | |
| y_bearing_holder | 3 | 0.20 | 20 | 5 | 5 | |
| y_belt_holder | 1 | 0.20 | 20 | 4 | 5 | |
| y_idler_tensioner | 1 | 0.20 | 20 | 4 | 5 | |
| y_idler_mount | 1 | 0.20 | 20 | 4 | 5 | |
| y_rod_holder | 4 | 0.20 | 20 | 4 | 5 | |
| y_motor_mount | 1 | 0.20 | 20 | 4 | 5 | |
| y_motor_endstop_mount | 1 | 0.20 | 20 | 4 | 5 | Only for MK2S or MK2.5(S) |
| z_leadscrew_cap | 2 | 0.20 | 20 | 2 | 5 | |
| z_motor_mounts | 1 (total of 2 parts) |
0.20 | 20 | 4 | 5 | |
| z_tops | 1 (total of 2 parts) |
0.20 | 20 | 4 | 5 | |
| cable_clip_horizontal | 2 | 0.15 | 20 | 4 | 5 | |
| cable_clip_vertical | 7 | 0.15 | 20 | 4 | 5 | |
| cable_clip_lcd | 5 | 0.15 | 20 | 4 | 5 |
Use the same assembly guide than the standard Bear 2.1 here: Bear 2.1 manual.