I really like this spool holder since here in vancouver we have quite a bit of moisture. I printed one and then decided i wanted to remix this so i could print the holder so that no screws were required. The windows are cut out and are filled with a sheet of acrylic sheet that is siliconed in to the door and the frame. The svg file can be used to cut out the sheet on a cricut cutter if you have access to one. otherwise just draw two concentric circles on a sheet and cut out by hand. The radii for the circles are

90.5mm and 35mm

If you do change the window size you can use the attached python script to generate the new svg file.

If you modify the window size in the scad file you will get new radii printed when you generate the model.

I have also added the capability to extend the spool holder width since one of my spools needed 10mm extra. See the code in scad for how to do this in the scad file.

I have included the original files from the spool holder so that you can just download them here.

The openscad file utilizes the original stl files to remix this spool holder.

I also included a custom screw that you can print with the knob attached.