I am on a constant purge of vibrations ist seems, and I came across a project of CyborgCNC's over a year ago. Though I started a design a while back I hadn't finished it. So here is V1. CyborgCNC did an excellent job on the design of the software, I recommend you check it out and spur him further on at https://www.rcgroups.com/forums/showthread.php?2337523-Dynamic-Propeller-Balancer-Build Ill update this more when I have run the prototype in a little. Was made for 10" props but has an adjustment slider for X to Y.