Keeps changing my thickness and I get and error

[eflyguy]

Try this:

Presenting the Focus Height Ruler (colonial edition)

(10/23/'20 Edit - I added a double-sided version here.) I present for your consideration - the Focus Height Ruler (cubic Smoots per Wiffle version, I might do a metric one later…) [image] FILE IS HERE → focus height ruler.svg.zip (6.9 KB) (Three steps - Engrave the numbers, Score the lines, & Cut) As focus height should be entered above where the crumb tray bed should be, this can be handy for determining that measurement when the bed is not there - or just to check your material thickness…

If your material is exactly 1", you will need to prop it up by at least 0.5", and no more than 1".

The material surface needs to be between 0.9" and 1.4" below the base of the laser head.