Spoolholder Adapter Plate Top Core One L

Core One L Side-Mounted Spool Holder Adapter Plate

I used the full CAD assembly of the Core One L to design this adapter plate, which allows the original Prusa spool holder puck to be mounted on the side of a Core One L. The model can be installed at either the front or rear position above the stock spool holder.

The plate is secured using two M3 screws of different lengths. One screw threads into an existing threaded hole in the printer frame, while the second screw is intended to be secured with a nut from inside the printer. The small locating pin on the part replaces one of the plastic rivets that hold the side panel in place.

The rear mounting position is particularly tricky to install due to the limited clearance between the side panel and the stepper motor.

For my own setup, I simply inserted the second screw without using a nut. Since its primary purpose is to prevent the plate from rotating, it works well enough without additional fastening.

I used the spool holder puck with threaded inserts by CDOE:

Core One Community Upgrade Puck with Inserts by CDOE

Required Parts

• 1× M3×16 mm screw

• 1× M3×10 mm screw

• 1× M3 washer (optional)

• 1× M3 nut

• 1× Spool Holder Puck by CDOE with threaded inserts

• 4× M3×8 mm screws

• 4× washers (optional)

Printing Tips

I printed all parts in PETG-GF using:

• 3 perimeters

• 10% gyroid infill

The small printed rivet is somewhat challenging to print and came out slightly crooked on my printer, but it still functions perfectly well.