Always a chance of course it could drop out and get lost. 1 main piece, slimline and the catch to hold it on the Ferrex tool is just a drop in piece that gets held in by a combination of friction and the Makita battery being fitted. This then is my redesign from scratch all measured up with the Vernier. It was also in two main pieces that needed gluing/screwing together. It was OK but had a push button mechanism and needed a spring to release it from the Ferrex tool. To recap, we printed a 4 piece Makita battery to Ferrex tool, downloaded off of I think Tinkercad previously.
