Handheld leg / back / muscle massager

My Mother-in-Law saw a massager similar to this in a magazine and the cost was outrageous so she asked me if i could make one for her. I used a few refference pictures and designed the parts in AutoDesk Inventor then exported them as .STL files, used XYZWare to make them printable on my DaVinci Printer, and made the massager. I made the connection points so that they fit a 1" dowel rod which is used as the handle. if your printer cannot print the .3W files I uploaded feel free to download the .S