Bear Upgrade 2.1.0 RC1 is out!

 Link to the release note: https://github.com/gregsaun/prusa_i3_bear_upgrade/releases/tag/2.1.0-rc1

Link to the repository on GitHub: https://github.com/gregsaun/prusa_i3_bear_upgrade/tree/dev

What’s new?

New build helper

This release includes a new build helper for Y axis to help alignment of the left smooth rod with the frame. Build helper for Z axis has been redesigned to ease alignment.

Both build helpers have a special shape to avoid print artifacts like elephant foot, buldges, bad corners or uneven layers. This helps building your frame as square as possible even if your print isn’t perfect.

⚠️ Do not use the build helper for Y axis on both smooth rods. This is only designed to align left smooth rod and not to set the distance between the smooth rods.

New optional LCD cover

• New accurate design from scratch
• Makes the frame shorter thanks to a bevel in front
• Eliminate vibrations
• Easier to rotate LCD knob
• Quicker to print and use less filament
• Sleek design for better look
• Optional: LCD supports compatible with stock Prusa MK3(S) frame
• Available in several different look

Other improvements and fixes

• Improve documentation on GitHub pages
• Fix an issue where the shorter Bear frame 2.0 for MK2S, 2.5(S) was not able to reach the end stop on Y axis in some cases
• Protection against elephant foot on some Y belt holders

Compatibility

This Bear Upgrade 2.1 is compatible with Full Bear Upgrade 2.0 MK3 frame. If you do not know which frame you have please check our FAQ here:
https://guides.bear-lab.com/Wiki/Bear_FAQ#Section_Which_Full_Bear_frame_do_I_have 

💡 If you have a Full Bear Upgrade 2.0 MK2S or MK2.5 frame you can find compatible parts here:
https://github.com/gregsaun/prusa_i3_bear_upgrade/tree/2.1.0-rc1/optional_parts/bear_2.0_upgrade_mk2-2s-2.5-2.5s

⚠️ 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.

What should I re-print from 2.1.0-beta0 release?

Nothing needs to be reprinted except the Y belt holder for the shorter Bear 2.0 MK2(S)/MK2.5(S) frame.

What hardware is needed if I come from Bear 2.0?

Below the list is the hardware needed if you upgrade from Bear 2.0 to this new release. No changes are needed on the frame itself.

• 1x M5x16 screw (button head ISO 7380)
• 1x M5x10 screw (button head ISO 7380 or Openbuilds low profile)
• 1x M3x30 screw (socket head ISO 4762)
• 7x M3x25 screw (socket head ISO 4762)
• 3x M3x18 screw (socket head ISO 4762)
• 2x M3x14 screw (socket head ISO 4762)
• 1x M3 square nut (DIN 562)
• 2x M3 hex nuts DIN 934
• 2x M3 hex nylock nut (DIN 985)
• 1x M3 washer (DIN 125), 0.5mm thick
• 1x M5 T-Nut

Check our temporary assembly guide to known where this hardware is used:
https://github.com/gregsaun/prusa_i3_bear_upgrade/tree/dev/manual/temporary_assembly_guide

Thank you

• Thank you Rebecca and Jason from LDO Motors for searching and building the best hardware for the final Bear 2.1 release. I know I can be very meticulous sometimes 😁
• Thank you to Josh Jones and Florian Däubler for their development and tests on Bear 2.1 and future
• Thank you to my Patreons for having tested the new LCD cover
• Thank you to Tom Jackson for having tested the new LCD cover adaptation for orignal Prusa frame