Hy, this is my third homemade Slingshot. Not long ago I saw a skeletonized watch. Inspired by that I decided to skeletonize a slingshot. So I made a blueprint an transferred it to 18mm Multiplex. After 5 hours cutting with my jigsaw, it was done. For the square inside I left only 6mm of the 18mm Multiplex in the middle. Filed, smoothly sanded and varnished it was ready for the bands and some shooting. Despite of the thin frame it is solid enough for shooting without deformation. Im very happy with it.