Note This is my first upload, please excuse me if anything is wrong

This is a spool holder for my wife's embroidery spools. Designed specifically to fit in a drawer but could be used on a work surface. Diameter of the 'prongs' is 14.8mm at the base with a slight taper to the top. I have no idea if that's a standard size for sewing spools but you should be able to scale in your slicer.