This guide will show you how to make a shelf for filament spools out of foam core, and your old filament spools.

You are going to need a large piece of Foam Core, (or any other similar material eg; Plywood) A tool to cut it, I will be using an exacto knife but whatever works for you, Two empty rolls of 3D printer filament, some duct tape, and access to a 3D printer.

Step 1: Printing the Mounts

There are two models that need to be printed, (all attached to this guide) that all need to be printed. The bracket needs to be printed once normally, and once mirrored, and the Roll supports need to be printed 4 times.

Step 2: Cutting the Foam Core

Once you get your board of foam core, measure out two rectangles with dimensions of 40cm x 17.5cm and 40cm x 35cm

Step 3: Attach Foam Core Pieces

Put the Left and Right brackets on either edge of the large piece and put the small piece in between. Don't worry too much about the height as it will be easily fixed later.

Step 4: Attach 3D Printed Parts to Rolls and Shelf

On the empty filament rolls, attach one of the roll supports to each, (it doesn't matter where, but keep in mind it will be the bottom) then attach the other two roll supports to the smaller board against the outer corners with the duct tape.