About this 3D model

Add a 58mm double ear handle mount to the original design. Glue it onto the original WDT tool. After printing the model, smooth the Z seam with some light sanding for a smoother rotation. The acupuncture needle can be 35mm*25 acupuncture needles. The original author's model address is as follows: https://www.printables.com/model/465015-spirographic-wdt-tool/files