I work on a MacBook Pro and I updated to the newest version of Lightburn. When I did, the power settings are now in mm and my artwork is in inches (which is what I prefer to use). Working with a couple of different people in some user groups, we were able to find where I am supposed to go to Settings under Edit. However, I don’t have a generic Settings category. I have Device Settings and Machine Settings (both of which do not allow me to switch the power settings back to inches). I need to get this fixed. Hoping there is an easy fix.
Power settings are in %, not mm.
Can you upload a screen capture of what you are seeing?
Update: I just saw you have a Ruida controller. The Settings selection may not be available for your machine.
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I don’t have a “generic” settings to select. It is showing up as Machine Settings or Device Settings and neither has the information you have shared above. This was only an issue after the last update.
I might have been using the wrong terminology. Before the update, I had my images, text, etc being measured in inches and the Power Settings would be 25 Power, 50 Speed for engraving for the type of machine I have. Now power is showing up in the hundreds. When I change it to the recommended Power, the preview shows it will take over 5 hours for something that should be around 15 minutes. Here is a screen shot of what I am talking about
Because Apple is different, LightBurn’s Settings are called Preferences:
@JohnJohn: Searching the doc with all the obvious keywords was futile; even the MacOS Specific Problems section wasn’t helpful. This needs attention from the doc folks, because other folks have hit the same wall …
Thank you..
Will do.
Thanks for jumping in to help. I was going to ping someone.
Jana, I was born and raised in Louisville. 
The easiest way to access the settings menu is the gears icon on top of the screen, next to wrench&screwdriver icon.
Do I need to contact someone specifically or does this thread contact them?
Thank you for the offer, we are monitoring and Ed called John to report to our doc team. You are good.
Here I show our latest Mac version full-screen, and point to where you can change from designing in metric vs imperial (inches). 
I followed that but mine still looks a little different. I don’t just have mm or Inches. Here is what I have. Which one should I choose?
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If you have a diode laser choose inches / min. If you have a C02 laser choose Inches / sec.
I do recommend learning metric though, at least for the speed settings. You can work in inches for design and metric for speed, that would be the bottom option in either category.
The vast majority of users work in metric and speed settings are typically shared that way. When you post a question with your settings ALWAYS include the unit you’re working in. It does matter.
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