The Basics Of Focus
Here is more on how the ThunderCAM plays well with autofocus to maintain correct calibration:
NOTE: If you do not have or use this type of autofocus you can save a z position in lighburn and use material thickness to calculate your focal plane numerically.
On the mini 60 there is no good way to mitigate the focal point changing as the bed is fixed. the thickness of the material would affect the focal point.
One option would be to make your reference focus the thickest material you cut. let's say 1/4" or 6mm. set your camera to the surface of the 6mm. then, if you want to use the camera with another material, say 1/8" or 3mm, add 3mm spacers under the material to bring it up to the focal point.
Another option is to save alignments for the thicknesses of material you use then load that camera profile for the specified thickness
Related Articles
How to Manually Focus
Manually Focusing Your Laser While the autofocus is convenient there are many reasons to manually focus.. In many cases it is quicker and sometimes even more accurate than using Autofocus. The following video will walk you through how to manually ...How to calibrate and use the manual focus on the Thunder Laser Aurora Lite Laser
Preface: This article covers how to calibrate the manual focus T-Bar and how to use the red dot focusing tool for your Aurora Lite Laser Quick start Video:Best Practices for using Auto Focus on a Nova Series Machine
This article covers the best practices for using Auto Focus on your Nova Series machine. When to NOT use Auto Focus: 1. Rotary jobs - The shape of the rotary machine and tumblers do not work with the sensors 2. If not using the stock 2" head. Auto ...Stepped Focus Tool
Mark Lazarz, an active Thunder Laser user and owner of markswoodchips.com, developed this focus tool with stepped graduations.Nova Series Auto Focus 101
Also be sure to see our head overview article: Nova Series Overview - Heads, Optics, Focus