PCB solder mask screen printing

After watching this video by Wegstr:

I wanted to get a similar result for my PCBs so I designed this tool. I usually work with two sizes of PCBs:

• 50x70mm (2.75x1.79")
• 70x100mm (3.94x2.75")
   

So I designed two of them that fit each of those sizes.
When printing it, you need to avoid “elephant foot”. On PrusaSlicer this is easy to do, just need to set the “Elephan foot compensation”, in my case I Set it to 0.2mm.

The mesh I bought on Aliexpress.