A really good laser/cutting explanation on how to cut versus scorching wood is here:
RDWorks Learning Lab 129 The Mechanics of Wood Cutting
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That’s a good one. Thanks!
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I would definitely recommend subscribing to this gentleman’s channel and watching his series of videos. Even though they pertain to a 50W Chinese laser, they contain a wealth of info that would benefit even a casual laser cutter user, or even a 
user for that matter. 
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Don’t suppose it’s written up anywhere? I can’t do 22 minutes of this guy’s tempo. I’m sure he has a ton of great info, but the pace is way too slow for my attention span.
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I always play him at 1.5 to 2.0 times normal playback.
If he goes into details I want to study, just click back and set the speed to normal.
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Oh right, I forgot you can do that. Good idea!