self back trigger point massage

Boost Meplease consider to boost this model if you like it and you have some spare boosts! i will be really thankful.a self back trigger point massage tool .you can print it in a single print if bed is at least 255x255mm.. i ended in this design after a lot of trial and errors. I put it up of my shoulder and find the spot of pain. then i gently push it . make some up and downs in the spot. the relief is what you guide through the process! very robust design with one joint.no other materials need