Y BTT SKR v1.3/1.4/1.4Turbo Mainboard Case for

Summary

Here is my remixed case for using an Bigtreetech SKR 1.4 with the Bearframe. Tested with 1.4 Turbo and Bear 2.1.

3D Printers > 3D Printers - Upgrades

skr bigtreetechskr bear

Important Notes:

Looks like I got the labelling wrong (as did Jerlo :) who Icopied w/o checking).Until I can fix it, please use the wiring guide here: https://www.biqu.equipment/products/btt-skr-v1-4-skr-v1-4-pro?variant=31220354187362Dont copy the orientation of the 5v DCDC board per myphotos - its the wrong way round and unsurprisingly will blowthe 10A fuse if you power up like that ;) luckily no magicsmoke...(Wiring picture shows correct orientation)

Here is my remixed case for using an Bigtreetech SKR 1.4 with the Bearframe. Tested with 1.4 Turbo and Bear 2.1.

H Hijinx

BTT SKRv1.3/1.4/1.4TurboMainboard Case forBear Frame

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updated 9. 3. 2021 | published 17. 2. 2021

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It is based on the excellent Bear SKR case from RC-CnC, and I have alsomixed in elements from another super bear SKR case from Jerlo.

Here is a list of the changes:

Use of heat-set M3 threaded inserts instead of captive nuts for PCB mountand securing the case lid.See image for the type of inserts to use.

Remixed lid to include a 80mm fan, which is the optimal balance betweennoise vs airflow vs size (it fits with the X motor).Note that RC-CnCs original lids will work fine too if you dont want a 80mmfan

Adopted the cable management solution from Jerlo's design - this worksgreat! Plus I added a couple of slots for cable ties if needed

Adopted the idea for port labelling from Jerlo's design (re-implemented notdirect remix). It saves a bit of thinking when hooking up the cables - seenote above

Adopted the extruder aperture from MK3s rambo case to include capturehole for 3mm nylon filament for extruder loom support

Bevelled apertures for SD card and USB port to increase access andaddress I hope a comment on the original

Added mount slots for (optional) common 22mm x 17mm DC-DC buckconverters - this is to allow flexible use of fans with different voltage thanthe PSU/mainboard (e.g. 12v fans with 24v PSU). Example product fromAmazon UK: https://smile.amazon.co.uk/DollaTek-MP1584EN-Step-Down-Adjustable-Converter/dp/B07DJ5HZ7GAlso see image for the correct buck converter

Removed some of the bottom (print bed facing) vents to prevent airflowfrom the cooling fan to print area. This is a precaution to to preventwarping of prints. Additional vents added to lid. Airflow from the coolingfan will exit the case primarily from the lid or from the hole at base

Filleted corners for aesthetics

Included mouse ear brims for easier printing - align these with the case/lidon the slicer build plate

Cable tie tag added to lid for cooling fan cable management

Model Files (.stl, .3mf, .obj, .amf) F33D DOWNLOAD ALL FILES

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Print instructions

Print with 0.2mm to 0.3mm layer height. I printed at 0.24mm.3 perimeters4 top/bottom layers20% infillNo brim (if using the mouse ear brims model)No supports

This Youtube video gives a good process to install threaded inserts: https://youtu.be/KqSmCHr4fdA?t=43I dont have one of the special soldering iron tips. My normal medium sizedtip works just fine.

Please print the cable restraints from RC-CnC's original design

This remix is based on

Jerlo SKR Box Bear with Noctua FAN

by Jerlo

SKR Bear Case

by RC-CnC

btt-skr-14-bear-case-case.stl

btt-skr-14-bear-case-lid.stl

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License

This work is licensed under a Creative Commons (4.0 International License)

Attribution

✖ | Sharing without ATTRIBUTION ✔ | Remix Culture allowed ✔ | Commercial Use ✔ | Free Cultural Works ✔ | Meets Open Definition

btt-skr-14-bear-case-case-brims.stl

btt-skr-14-bear-case-lid-brims.stl