If your Thread holder in your IKEA sewing machine breaks, then here you have a replacement part. I used slic3r and printed with the following parameters with good results. layer_height = 0.2 perimeters = 2 top_solid_layers = 3 bottom_solid_layers = 2 fill_density = 0.3
"The joy of making something and learn the process"A non-stopping maker interested on electronics, 3D technologies, RC flying machines, programming, CNC and many more ...