UPDATE: The grid from the video can only be used by the original D1 and NOT the D1 Pro. It can only be opened up in Laserbox Basic and the D1 Pro can only use the new xTool Creative Space. If you are looking for an updated video on a grid for that on that you can find it here:    • xTool D1 Pro Grid Files | Use Absolut...  

These feet are intended to be used the the XTool D1 to keep the engraver locked in the same spot for better registration. Add one foot to opposite corners of the engraver and screw down to the spoil board. There is also a Laserbox file on the Thingiverse site that can be used to burn a grid pattern on the spoil board.

https://store.xtool.com/collections/l...

Buy it here:
https://www.etsy.com/listing/1101241782

Looking for the grid? Download it here. (Be sure to download the file one at a time, the download all button is broken on the site for some reason)

https://www.thingiverse.com/thing:509...

Don't want to buy it?
You can find this and the 3D files if you prefer to print this yourself here:
https://www.thingiverse.com/thing:509...