Flexible shaft coupling holder

thingiverse

`This piece holds a flexible shaft coupling, such as those frequently used in 3D printers. It allows to drill into it without the coupling wobbling. I needed this for the Bubblegum CNC kit, as the conversion requires 5mm to 4.5mm coupler, which proved impossible to find. The solution then is to get a 5mm to 4mm one, and enlarge the hole. The piece needs to be made to exactly fit the coupler's external size. I found both 18mm and 19mm couplers, so I included files for both. It's easy to produce whatever size is required from the OpenSCAD source. Print Settings Printer Brand: RepRap Printer: Prusa i3 Rafts: Doesn't Matter Supports: Doesn't Matter Infill: 100 Notes: I recommend making it solid, as the whole point of it is to prevent the coupling from moving. Post-Printing Some light sanding of the inside surface might be necessary.