These fill the gaps in your ender 3's extrusions to prevent debris from filling them up and looking bad over time.
This Config only covers the slots near the bottom of your printer that are likely to fill with plastic bits, If you have a standard ender 3 and would like slots for the vertical portions just let me know and I'll add some. I've also uploaded the Solidworks file if you'd like to edit it to a custom length.
Update:
- Added the 232.3mm slot for the top of the printer, fits slightly under the spool holder bracket
How many to print: For a standard config: 8x Slot 135 2x Slot 104.5 4x Slot 171 1x Slot 232.3
For Drag Chain Config: 6x Slot 135 2x Slot 121 2x Slot 104.5 4x Slot 171 1x Slot 232.3
For SD card slot config: 6x Slot 135 2x Slot 107 2x Slot 104.5 4x Slot 171 1x Slot 232.3
For SD card and Drag Chain config: 4x 135 2x 121 2x 107 2x Slot 104.5 4x Slot 171 1x Slot 232.3
The SD card slot can be found here: https://thangs.com/designer/Reagan%20Ducote/3d-model/Ender%203%20SD%20Card%20Holder-921743?manualModelView=true&source=All+Files