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 Height Detail 10 Minimum Layer Height