DIY 1000W Fiber Laser Cutter Part 5: Cooling & Gas Assist Systems 

There is some really creative ideas here. Your solution for an adjustable cutting bed is, simple, effective, cheap and ingenious!

As a person running high power laser in research labs, I am chiming in to advise you to add some anti-fungal compound to your chiller's reservoir : heat plus moist environment is something you do not want to have to clean when microbes and fungus starts inevitably to grow inside there.

Loving the series thanks! Will comment on all your videos hope it helps boost your channel a bit

Beautiful work

If you get leaks in the cooling water, consider fuel injection hose clamps.

Need a dual 1.5mm nozzle, lower head to 0.5mm focus at +2 mm ( focus 1/4 the way into the material) 8mm is going to be tough for 1kw no matter when you head the ringing/pinging sound you are at the right power/pressure with oxygen. Also double pierce with focus above the material.

As Im sure youve already noticed, cutting Aluminum or Glavanized steel with Nitrogen is much more forgiving than cutting Carbon Steel with O2. Steel and O2 is a lot more finicky to get it right. Looking at the cuts, I think the O2 might be a bit high as is the power. In a past role, I ran both a 4kw Mazak CO2 laser and a 4kw Bystronic CO2 Laser.

wow, it get's very complicated like this

I've seen such a finish on 60kw laser cutters that cost more than $100,000 (when cutting 1" steel quickly). This really is laser assisted oxy cutting.

Late to the show, hopefully you’ve found the bug! Run the videa at half speed, and you see some lag on the second half or the run. Also I would suggest making a video with a thermal imaging, to watch heat dispersion

What would the average cost be to build this ? I have been watching this , you have a great machine there . Thank you for sharing .

I think you want the aluminum bed supports the other way around. the knife edge is less likely to reflect back up into the laser. also you may cut through them quicker

All thumbs up! 😂

I'm pretty sure you want the electro pneumatical regulator valve as close to the head as you can get it. It reduces the length of hose that needs to be "purged" to the correct pressure every time the assist gas is turned on/off. At least, this is how that valve is installed on of the fiber laser machines I've worked with, but those machines are 5'x10' or bigger so your length of hose might not be that big of a deal Also, I know with the other fiber laser controllers there is a calibration curve you can program at the controller to make sure the regulator is giving you the correct pressure. However, I'm not sure if the Rudia controller has this feature. My experience is with the FSCUT2000/Cypcut environment. You may want to check that the gauge is correctly displaying what you are asking for. The machine looks great, I'm definitely following this build as I've wanted to build my own fiber laser machine and this might just be the way to do it.

Travis, you're a wizard! What's your day job?

By running the hot and cold chiller lines together are you going to short circuit the cooling effect?

This is quite a thing

i have subscribed and ask notification i only see this video now .

Those cuts actually look quite consistent; only in a not so great way. You just got to get her dialed in right! And I've seen a lot worse that's for sure.

Do you have an O2 detection system so you don’t asphyxiate yourself on the nitrogen gas?

Also preprocess your air before you compress it. It will make your life easier.

is this works without air compressor?

Philips Millennium M10 Oxygen Respirator can u use this O2 filtering machine? It has 92% purity oxygen filtering output. It is possible to bottle with a pump. cheaper than buying gas.

I was wondering if it might be possible to retrofit a laser welder and the source. Save some money if I want to do both task.

I also built the 1000watt fiber laser with MAX laser source. And exactly same cutting problem and as the automatic gas pressure controller is still missing i also think it might be the problem so you installed it already is it better now it helped or same as before?

20cm is like 8 inches. you did 20mm or 2cm

Wouldn't have been a 1kW Fiber laser with water micro jet? I mean with water instead of Air you could cut thicker material and with more precise and smother (EDM great even with non conductive Hard materials) cuts than that.

how thick will it go thoug?

Wouldn't it be smarter on a laser this powerful to not have any of it's operational components below the gantry at all?

Plasma