My first creation from scratch using Freecad CAO software, and my 3D printer. This CG balancer is the tool I needed to setup correctly the CoG on my sailplanes accurately. It is made from PLA and aluminium, is very stable, and very sensitive, so precision should be better than the millimeter, which is perfect. Freecad is a bit like OpenTx, you need to learn the philisophy of it. I still haven't understood everything but I'm getting better every day using it. For the 3D printer GCode generation, I switched to CURA 15.04.3 instead of SLICR. I obtained much better results, and now I'm able to print right at the first attempt. Correct Temperature for orange PLA from BQ is 215 degrees. Overall, this first project give me confidence in the usability and interest of the 3D printing for our hobby.