back self massage tool

update on my back pain! problem solved with this tool:new triggered one. This really took my pain away! https://makerworld.com/en/models/682706#profileId-611282However there are 2 different tools that works also on diferent spots… couldn't help my self with the pain on my upper back.didn't have a helping hand so decided to design and print a tool.the best trick is to pull instead of push to work ok when you are alone.Another method i tried successfully was the wall while holding it from above. But if there is another person in the room the feeling is amazing.The wheels have the right distance not to hurt your backbone…if you own a 255x255mm bed you can print them all at once.it takes almost 8 hours and 300 grams to print.0.28 extra draft profile no changes.generic petg no changes.x1c