Frame

Bear Frame 2.1 for MK3(S)(S+) STL files: bear21_mk3-3s_stl.zip

Bear Frame 2.1 for MK2(S) or MK2.5(S) STL files: bear21_mk2-2s-25-25s_stl.zip

If you have the early Full Bear 2.0 for MK2(S)/2.5(S) (shorter frame than Bear 2.0 MK3) you will need to use special parts. All details and STL are available in the optional parts -> bear_2.0_upgrade_mk2-2s-2.5-2.5s.

Read the print settings here.

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: Extrusion multiplier and filament diameter

This Bear Frame Upgrade 2.1 is compatible with the Full Bear Frame Upgrade 2.0 MK3 frame. If you do not know which frame you have please check our FAQ here. The 2.1 version needs extra hardware (screws, nuts, washers, dowel pin), check the bill of materials for more details. You can also order hardware upgrade kit from our distributor websites.

If you have a Full Bear Frame Upgrade 2.0 MK2S or MK2.5 frame you can find compatible parts in the optional parts section below.

The new Y and Z axis are not compatible with any of the existing Prusa or Bear 2.0 parts. You have to update all parts from Bear 2.1.

The original Prusa firmware is compatible with the Bear Upgrade 2.1 only if you use the Original Prusa extruder and X axis. If you use the Bear upgrade 2.1 frame with BearExxa, BearMera or Bondtech extruders you will need to use custom firmware.

Link to the assembly guide is available on top of this page.

Read the BOM here.

Official optional parts

Community's option parts

Read the Bear FAQ here.

Bear 2.1 frame for MK3(S)(S+) CAD files and mechanical drawings: bear21_cad_drawings_files.zip

All source files (the complete GitHub repository): Go the to latest release note and in the bottom of the release note, under the Assets, click on "Source code" (you can choose between zip and tar.gz files).

Read the latest release note here.