This is a remix of the Spool holder for the Prusa i3 aluminium frame by iPadNanito. We made one for our i3 but our new printer is a P3Steel, which has a steel frame of a different width and thickness. We changed the openSCAD code for the Frame Support to make the frame width and thickness variable so you should be able to use this spool holder design for either printer.Edit the Spoolholder_p3s_Frame_Support.scad and change the variable frame_width to the width (vertical size) of your printer's frame and the variable frame_thickness to the thickness of the frame. You will probably want to print these parts scaled to 102% (depending on the material you use, we used ABS) because they are a very tight fit. Print 2x Bearing_Support and 2x Frame_Support. Hardware needed: