LED lamp holder

This is a holder for a OSRAM Dot-it (registered Trademark). As the idea of the lamp is not bad, the design is. The adhesive tape becomes weak and the lamp falls off. The batteries can only be changed by opening the back cover by unscrewing three tiny screws. To solve the first problem, I constructed a slide-in holder. Second version is now tighter and offers some narrowing to overcome, in order to mount this also overhead without risking that the lamp falls down.
Three screws 3mm are required to mount the holder.
I included the FreeCAD 0.19 beta files, so you can adapt if needed.