Bear 2.1.0-beta0 released! (Patreon)

 Bear 2.1.0-beta0 has been released! New Z axis, shorter LCD screen, new cables clips and new end caps. Now all features I wanted for 2.1 are in!

Link to release note: https://github.com/gregsaun/prusa_i3_bear_upgrade/releases

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

What's new?

New Z axis:

• Overall stiffer structure.
• Better holding of the Z smooth rod.
• Avoid alignment issue due to 90° plates.
• Easier to install and align.
• Motor is a bit higher up.
• Use M3x10 screws for motor.
• Z motor mount use only two M5 screws.
• Improve X axis ramming accuracy.
• Reduce chances or warping during print.

New end caps

• Avoid end caps breaking by using smaller and longer set screw.
• Nicer Z end caps.
• No need to thread extrusions anymore.

New LCD supports

• Shorter support to reduce printer length.

New cable clips

• Use zip ties for horizontal and vertical clips.
• Nicer look.
• Stronger fit.

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-beta0/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?

Here are the parts you need to (re-)print from Bear 2.1.0-alpha1 release:

• z_leadscrew_cap
• z_motor_mounts
• z_tops
• lcd_support_a
• lcd_support_b
• y_end_caps
• z_end_caps
• cable_clip_horizontal
• cable_clip_vertical
• cable_clip_lcd

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 M3x30 screw (socket head ISO 4762)
• 7x M3x25 screw (socket head ISO 4762)
• 4x M3x18 screw (socket head ISO 4762)
• 2x M3x14 screw (socket head ISO 4762)
• 2x M3 square nut (DIN 562)
• 2x M3 hex nuts DIN 934
• 1x M3 hex nylock nut (DIN 985)
• 1x M3 washer (DIN 125), 0.5mm thick
• 1x Dowel pin, 2.95mm diameter, 15.8mm long (same as Bear X axis)
• 12x M4x5mm set screw

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

Credits

Vecko Kojchevski Z axis parts: https://www.thingiverse.com/vekoj/designs . Vecko  also gave me great feedback on the Z motor mount that were useful. Thanks!