How (not) to Break the Cleanner:

he guys from FabLab created a clanning script that only by uploading it should automatically clean the sand, but when I tried it, the Z possition was to high, so it only cleanned in some parts of the sand. So I openned the code in a text editor and modified the file, but this time I lowered the Z way to much, so it was cleanning really deep in the sand, which forced the tool and broke it.

So the recommendation for not doing this, it to start little by little testing the Z axis, to check that it is not too low, so that it cleans properly, without breaking. Also is important to learn the G-Code commands, so in case you need to stop it you can lower or raise the servo that controlls the cleanning tool.