FreeElectronics compartment for Flying Bear Reborn 2 (or any other if you change some parameters)
Printables
41 model
Free
FreeBottom Plate for Skateboard Wall Mount
Printables
FreeBottom Bearing Mount for Tevo Tarantula Single Motor Dual Z Axis
Thingiverse
FreeBottom Mount PSU Mount Ender 3 Pro with built in cable chains
Thingiverse
FreeBottom Mount Drawers
Thingiverse
FreeBottom Electronics Enclosure & PSU Mount System for Duender
Printables
FreeCR6-SE Top & bottom mount filament guides
Thingiverse
FreeRook 2020 Easy mount bottom panel
Printables
FreeEnder 3 Bottom Angled Spool Mount
Thingiverse
FreeEnder 3 Pro bottom PSU mount
Thingiverse
FreeCreality Sonic Pad Bracket (bottom table mount)
Thingiverse
FreeK8400 Vertex Bottom fan mount
Thingiverse
FreeMK8 extruder fan/probe bottom mount
Thingiverse
FreeEnder 3 Bottom Parallel Filament Mount - Using Stock Bits
Thingiverse
FreeModified Precision Piezo Orion Bottom Mount
Thingiverse
FreeStage Mic holder with bottom mount
Printables
FreeImproved FolgerTech Kossel Bottom Corner (Motor Mount)
Thingiverse
FreeEVA 3 Standard Bottom Horns Cartographer Probe Mount
Printables
FreeEnder 3 Bottom Perpendicular Filament Mount - Using Stock Bits
Thingiverse
FreeZ-Axis Motor Mount Bottom Bracket - M3 nut
Thingiverse
FreeAnet A2 bottom Z-mount
Thingiverse
Free"no-wobble" bottom ball-bearing mount for RapMan 3.2
Thingiverse
FreeEnder 3 Bottom PSU Mount
Thingiverse
FreeUltimaker 2 Extended+ Bottom Mount for MeanWell-Style Power Supply
Printables
FreeMK2 and MK3 Pi Camera Mount with bottom exit ribbon cable
Thingiverse
FreeEnder 3 NG v1.2 bottom frame with stronger 22 mm Z drive bearing stops (for 2020 and 2040 extrusions)
Printables
FreeHygrometer 2020-2040 Top or Bottom Mount
Printables
FreeCR-10S Hinged Filament Sensor Mount (Bottom Plug)
Thingiverse
FreeWanhao Duplicator i3 IKEA JANSJÖ Bottom Mount
Thingiverse
FreePrusa MK3/MK4 Raspberry Pi4B Case Bottom for Aluminum Extrusion Frame Mount
Printables
FreeSimple Ender 3 Pro PSU Bottom Mount
Thingiverse
Free2040 Mini Kossel Motor Mount Bottom Frame
Thingiverse
FreeEZOut Breakway Filament Sensor Mount Bottom without Cable Clip for the Ender3, CR-10, CR-10S4/5
Thingiverse
FreeEnder 6 Y-Axis MGN9H Linear Rail Bottom Mount
Thingiverse
FreeAnycubic Kossel (Linear Plus) E3D V5 bottom mount
Thingiverse
FreeGeeetech z-axes top and bottom mount
Thingiverse
FreeAnet A6 Z Anti Wobble Bearing Mount (Top and Bottom)
Thingiverse
FreeVariations to "Anet A6 Z Anti Wobble Bearing Mount (Top and Bottom)", by tkris85"
Thingiverse
FreeTevo Tarantula Webcam Mount, Bottom most 8020 rail
Printables
FreePrusa MMU2 Wall mount filament brake, Top & Bottom Bar
Thingiverse
FreeCR10 heated bed wire restrain bracket, bottom mount
Thingiverse