Sewing Thread spool holder

Designed this to help my mother's sewing cabinet be more organized, the dimensions of the holders were decided to look at the build volume of my printer. I have also attached .sldprt files for increasing the number of rows.

Do note that there is an overhang present after all the spool holders are loaded, If you are making changes to the number of spools within a row, design middle supports as well to prevent creep.