XYZ DaVinci heat bed calibration tool (simple)

Full instructions here (youtube):
https://youtu.be/nrT32KrNzm8

You will also need:

1 needle
1 screw
1 Wood barbecue skewer
Some tape
A drill of some kind...

The holes that is needed is just apoximate. You will need to drill them so they fit the things you have lying around. The whole Idea with this is that you should not have to run of some where to buy a fancy tool. Just use the stuff you have at home when frustrated with your XYZ printer...