This retrofit converts a Snapmaker J1 from rear-mounted filament to a front-loading spool system. The two filament holders utilize the empty space inside the printer to the left and right of the bed and can be loaded from the front which can be more convenient.
It is comprised of two adjustable width spool holders that feed the filament downward into a new PTFE tube that pass under the base and up through ports that replace the rear-mounted plastic hangars and through the existing mechanism to the extruders (see photos).
Spool holders mount to existing screws on the J1 by changing out the existing M3 screws for longer M3 x 16mm screws (see photos).
The latest release provides extra clearance for 8" spools, between the top of the spool and the bottom of the foam on which the extruder rests when it is parked (see photo with rulers to see the difference). Spool Base 3B adjusts the bearing mounting posts on the base to accommodate variations in material types.
This design has been beta tested on multiple slicers (Luban, Cura and Prusa) with PLA and PETG materials by members of the facebook Snapmaker J1 Owners group (https://www.facebook.com/groups/snapmakerj1). You can see photos of many people who have used it there and on Thingiverse. My thanks to all who assisted in beta testing this project.
The base piece has been updated to V3 ensure the roll does not pivot into the direction of the printing table during high accel/decel. It hasn't happened to me, but others have mentioned a fear of this - so I've changed the base to make it safer.
Printer:
Snapmaker J1
Rafts:
No
Supports:
No
Resolution:
.2 or better
Infill:
50%
Filament:
Various
Notes:
Screw has brim already in STL so no need to add brim.
Follow the photos and you should see how it all works.
Uses skateboard bearings type 608z. You may need to soak the bearings in isopropyl alcohol to get them to spin more freely (depending on how heavily they are greased).
I used Capricorn PTFE tubing. You'll need about 3m to do both extruders.
You will need 4 M3x16mm hex head screws (see photos).
Good Luck!
Category: 3D Printer Parts
The author marked this model as their own original creation. Imported from Thingiverse.