February 28, 2018 at 7:31 am #53948That is how I added it to my Co2. You need more pressure than a fan can deal with. It works very well and keep your lens perfectly clean. I just 3d printed a cone that fit on my laser, came down to a ~3mm hole, had a barb on the side that fit surgical tubing, and that went down to a large aquarium pump I got from amazon. A bunch of the k40’s do it that way that way there is nothing to adjust. If the laser can see it so can the air stream. Pumping air in from the side means certain directions work better than others.
I think he’d be okay with the fan he has, it’s a centrifugal blower fan. I have three smaller ones on my 3d printer, can’t let them get over 25% or they blow too much and cool the hot end down. He could go crazy and add one on the other side, duct both into a cylinder that’s open at the bottom and seals up against the laser lens assembly. Could get really fancy and duct them opposite of each other so you get a swirl in the air stream. That should kick out any particulates that might foul the lens.
Using two blower fans is my idea going forward, and designing a kind of duct system just as you said creating a swirling air stream down a cone just as Ryan said.
There was a design on thingiverse that used a fan and he said he was going to change to tubing because the fan was recycling the smoke once he started really cutting a lot.
I thought of a solution for this as well, the intake for the fans will be up out of the way ensuring fresh air is pulled however just one fan on the side of it as a quick test in my video solved the smoke blow back problem pretty much completely; So I’m not very worried the fans would be blowing back in smoke. I did use this for a much longer cut that took over an hour and had no issues.March 4, 2018 at 3:58 pm #54334
Hey ryan; could you point me to your test script for lasers, I had it at one point but cant seem to find it again 😐March 4, 2018 at 4:03 pm #54336March 5, 2018 at 4:57 pm #54408
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Thanks much! was finally able to tune the beams focus in, sneak peak, I was waaaay off. lolMarch 5, 2018 at 5:28 pm #54412
Dang so you have more power!? Do you have to focus them individually?March 5, 2018 at 6:13 pm #54414
Dang so you have more power!? Do you have to focus them individually?
MUCH more power, I was somewhere between 10-15mm off, so it was a huge difference, and I needed to speed the laser up because it got to the point the wood would just catch fire instead of cut haha. Don’t need to adjust both there focus range is shared but it seems pretty tight, 3-4mm or so.March 18, 2018 at 5:32 pm #55594
I finally got some more time to make another video with the laser, definitely showing how useful it is!March 18, 2018 at 5:35 pm #55596
I have not watched the video yet so I am not sure you mentioned it in there but vinyl is a no no with a laser. Poisonous gas is created. I took my vinyl video down.March 18, 2018 at 5:36 pm #55597
Acrylic is okay but the other ones are not.March 18, 2018 at 5:39 pm #55598
Acrylic is okay but the other ones are not.
oh well crap, haha..well I’ll figure out some way of recovering the video. glad I use lots of air filtering and only cut for a few minutes!March 18, 2018 at 6:23 pm #55605
Okay, I added a warning to the beginning of the video to make it clear you shouldnt do that, lol.March 19, 2018 at 8:02 pm #55701
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