extraction fan for chinese co2 laser

[Mark McGonagle]

Hi All
Looking for a quite extraction system for a Chinese CO2 laser. Must move fumes/smoke at-least 5mts but ideally 25mts. I will use mainly 150mm PVC piping with 22deg bends where necessary (only a couple mainly straight line). Initially thought of using 1 or 2 inline fans but the more I look into this the more complex the solution becomes. Static air, positive pressure, negative pressure etc. I was going to get the biggest fan for my budget and then discovered diameter of pipe is important.
Any suggestions or examples of what others have used would be greatly appreciated.
I will be taking delivery of my laser in about 30 days & it comes with a 550w fan (blow up castle style) which I believe are very noisy. can they be baffled?
i don't want to spend $1200 on a filter system just yet.

PS I was going to say its not rocket science....But I'm sure someone would have inform me it actually is..

Cheers

[Mike Null]

Mark
There are dozens of threads on this topic just waiting to be searched.

you may need to be a contributor to do a search but that can be as little as $6 a year.

[Mark McGonagle]

Thanks Mike, tried to search but kept going to google. Now I know why......

[Kev Williams]

You're right about sucking smoke from a laser cabinet isn't rocket science, and yeah some folks think it is ;)

As I'm typing this I'm uploading a video to show you that all you should really need is a basic Harbor Freight dust-collection blower. They work and they last :)

Note- I'm a crappy video maker, not my calling ;) --and, note that I'm engraving with the cabinet doors OPEN, which is normal for these 2 machines, my Gravograph(s) LS-100 and LS-900...


https://youtu.be/9IoMGGvYNok

[Mark McGonagle]

Perfect, that's what i wanted to see. Sometimes you can get too much information and waste your time procrastinating. You have just saved me so much stress
Thanks for your help

PS your video work is not bad at all:eek:
Why do you engrave with door open?

[Kev Williams]

Why do you engrave with door open?
Because I can! :) The vast majority of my engraving is plastic tags, labels, SS ID plates, etc, and I simply don't like opening and closing those damn lids! Now, my big 1390 Chinese Triumph, the cabinet is very large, and the smoke is pulled from below the honeycomb table which is way less efficient than pulling smoke from ABOVE the table, so that door gets closed :) My GCC Explorer pulls smoke from above the table, but it has a 3' long table, so WHERE on the table I'm engraving affects how well all the smoke removes with the door open- since it's door is a lightweight sheet of lexan I just usually close it...