I needed a couple of spanners to adjust the bed levelling screws on my Prusa Mendel. At first, I was going to download and print one, but then I decided to have a go at my very first real creation (from concept to physical print).
I measured the M3 nuts with my digital callipers (5.4 mm across flats / 2.3 mm thick), and designed a spanner with an open end at one end and a hex ring at the other, using Alibre Design PE(Personal Edition). I increased the gap by 0.5 mm (to allow for plastic shrinkage, and to allow the spanner to fit over the nuts easily), and exported an STL file. I then printed a pair.
They don't look too clean in the photo, but that is because my machine is brand new, and I am still learning how to optimise and calibrate it.
I am sure there are many other 3 mm Spanners you can download, but this is my own design, and I am proud of it!
I have uploaded the Alibre model file for those with Alibre PE who may want to modify the design; otherwise, just download the STL file.
| 3mm_Spanner.AD_PRT | 350.0KB | |
| 3mm_Spanner.stl | 110.0KB |
![Tea Bag Caddy With Paper Cup [easy To Print] – Tea Bag Holder 3D Printer Model](https://res.3axis.co/78fcfecd-88ba-4b9b-9ca8-ad98b716e6a3/images/42464305-d7af-4353-9bd6-3a093da49937_thumb.jpg)
