... for a forum request from the German forum "CNC-Ecke" I've marked a 2m scale from wood and a 1m from plastic.
Here is a video with the 2m type - https://www.youtube.com/watch?v=VkjMwht441I
And here with the 1m - https://www.youtube.com/watch?v=ItltqPKbENs
Attached the result (the 2m- goes even darker)
Viktor