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I think you're right it's not plywood, I think it is solid wood of unknown species...
Do you know any good tutorials or spreadsheet on combination of lins length vs air pressure ?
Do you think more...

So a small "airbrush" compressor there will create 4 bar / 59 psi of air pressure, will be large enough to create similar results as in the video ? and again do you have any ideas which lens length...

I would like to add a compressor to a Chinese laser cutter 130w , it comes with a small air pump and piping.
It will be wonderful to cut plywood like in this video...

I really think you misunderstood me
If it sounds too good to be true it probably is, but on the other hand they are not guilty before the other has been shown...
The earth is round and a airplane...

I think you should drop them some questions, to see if they are knowing what they are talking about.
It will make a lot more sense than asking here ;-)
And if you get something / data out of them...

Sorry if we are ask some stupid questions but we are very new to laser cutting, and we a little bit afraid of all the laser power... Hope you can help some newbies.
We have read a lot of posts......

Just a thought try to check if the blue wire is probably connected

Hi my first post :-)
We have just bought a Chinese Co2 laser cutter with 2 lasers 1 on 80 wat and the others is on 150 wat.
Do you think the windows in the machine is thick enough to protect your...