Spool Holder for 2020 Extrusion (625-2RS Bearings)

This spool holder can mount to any printer with 2020 extrusion.  (The fit was tested with LDO 2020 frame.)  One side of the mount will stick out past the extrusion by about 9 mm because of the print orientation and size of the bearing.  You can mirror the mount in a slicer if it interferes with your printer. 

My design fits spools up to 84 mm wide, and requires an inner diameter of at least 46 mm.  You can use the included Fusion360 design file to make a spool holder of any length.  If you are using large, heavy spools you may want to use the reinforced models.  They have very small slits cut into the interior that force the slicer to add extra perimeters.  

Supplies

You will need

• (2) 625-2RS Bearings
• (1) M5x10 BHCS and (1) M5x16 BHCS for bearing axles

For mounting to 2020 extrusion you will need

• (1) M5x16 BHCS
• (1) M5 nut for 2020 extrusion

Note that 2_screw models will obviously need an extra screw and nut.  

Slicing and Printing

Take care when printing the roller in a vertical orientation.  I recommend slicing with random seams and a brim.  Carefully calibrate your first layer and use glue/adhesive products to further increase bed adhesion.  

Notes and Assembly

I modeled with 625-2RS bearings (found in several Voron builds) because I wanted a design that could reuse old bearings after maintenance and a rebuild.  Note that the M5 screws are intended to cut threads into the mount.  The friction and tight fit locks them into place.  

Be sure to install the bearings and roller before mounting the assembly to your printer.  The M5 axles are not the same length.  Use a M5x16 BHCS for the axle closest to the extrusion frame, and a shorter M5x10 BHCS for the opposite axle.

Thanks for visiting, and enjoy!

Minor Update:  I cleaned up some of the CAD without making substantial changes.  I also added reinforced models.  

Minor Update: Edited the description and added a new picture.