Print Silenced Frost spool holder found here.
The spool stand consists of a left and right brace and 4x cross braces.
Each cross brace requires 2x M3x5x5 heatset inserts.
You will need 8 M3x16mm screws to assemble.
SilencedFrost's Spool Core requires 2x 608 bearings, 2x M3x12mm screws and 2x M3 heatset inserts.
I have included the .STEP files as well as the .STL files
The author remixed this model.
Modified spool holder to take @SilencedFros_2044064 spool core and fit 1kg spools. I have also modified the spool stand to suit 20mm tube as it's more easily available to me here than ½ EMT