With this configurator you can design cheap base plates.
For this we are using our steel connector plates.
If you wish we can drill the hole and mount a threaded rivet for you, but you can also do it yourself by purchasing the individual parts. (Hole in connector plate not included)
You can find the matching screws here (20x40 I --> M5, 30x60 I --> M6, 40x80 I --> M8, 45x90 B -->HERE + M8):