This fidget toy is fully Print in place and does not need any assembly of the mechanism. Perfect to test your printer or just as a fidget on your desk. It makes use of a spring gear that will bring back the knob that you are moving back to the center every time. Every make will be featured on my Instagram add your handle and follow me :) Check out my Instagram (https://www.instagram.com/tomo_designs/) if you want to see more designs like this or if you have questions! You can also become a seller of all my designs. Check out my Patreon (https://www.patreon.com/TomoDesigns/) The filament I used: Silk Blue Green (https://www.amazon.com/AMOLEN-Printer-Filament-1-75mm-Printing/dp/B09YT3N139?crid=YFMGLC92XUML&linkCode=sl1&tag=tomodesigns05-20&linkId=76bfd0562a8b38281620a2faef051ebe)