Dummy 13 500% scale multiboard mount\back support

This is a back mount for the 500% scale Dummy 13. It allows the Dummy 13 to be mounted on Multiboard using multiconnect v2 connectors. It also provides support to keep the back straight when not mounted and in a sitting position. Mounting demo using door hangers and a small grid.After printing Dummy 13 at 500% scale, it initially sat and even stood without any issues. However, after a few days of repositioning and posing, the joints loosened, causing it to hunch over while sitting and struggle with standing. Even when standing, it was prone to toppling over with any small bump or vibration.I needed a solution that would:Allow for easy mounting and removalOffer flexibility to move it between locationsProvide temporary setups when neededAs a fan of the Multiboard system (and with panels already installed in several spots), I decided to integrate it into the solution.Originally, I created just a back support piece to help Dummy 13 sit upright. Later, I widened the design and added Multibo