Drill attachment. The model is similar to the one shown in the video. It is adapted for 3D printing on a small-field printer. Therefore, its design is collapsible for owners of large printers, I can make it whole. When printing, it is desirable to use high infill or an increased number of perimeters. The preferred material is PETG, but other materials may be available.Detail 7 pay attention to the supports.Part 9 is printed with a pause, and the extruder moves to the starting point to install the M8 nut. Minimum Layer HeightDetail 10 Minimum Layer Height