3:48

Great video 👍

Thanks, this is helpful. I guess a well-designed PSU could serve the function of a GFI (or RCCB) by ensuring no imbalance in current between the hot and cold ends of the tube. If more current going out than coming back, there's lightning somewhere!

Rest in Peace. Your helpful advice & videos will be greatly missed

I wonder if an arch fault breaker (instead of a normal GFI) would have kicked off when this happened.

ive wanted to get one of these k40 lasers for yrs but have never gotten around to picking one up cause i always decided on getting a different type of machine instead so i got 12+ printers cnc router, lathe, mill and i did end up getting a diode laser engraver but c02 is on a different level so its always been in the back of my head as something i really want to get at some point. i still want one but im at the point where im more willing to spend way more to get something that is alittle more put together an dont require me having to tinker to get to work out of the box or at least has more direction when getting it setup an going but i dont know if anything has come out since the last time i looked 3+ years ago or more probably, i know i see a couple machines advertising but im pretty sure they are just diode lasers an if i spend that kinda money i want it to at least be a c02 laser so i can cut clear plexiglass.

Thanks!

Thanks for the vid, maybe I missed it but did you discuss prevention techniques or alternative add-ons we can use to prevent this type of damage? Possible cause that this happened?

My tube did the exact same thing, started losing power, got burned just like yours and then started arcing real bad. I still did get zapped with it unplugged and turned off when I was removing the wire to replace the tube.

Mine just did this sadly. At the worst time as well. It was 6 years old and I used it daily

hello i hope someone can help me with the problem my machine have, its a k40 laser machine, and it shoots a double laser bean (2 dots) from the laser bulb intead of 1, i check the mirrors and everything but the problem comes directly from the laser bulb, in the end of the bulb there is a metal cilinder that is conected to a wire, and i saw that the light bean hits that little cilinder and maybe it makes the bean becomes "double" i dont knoiw what to do anymore and im really sad because i was starting to sell products making by me on the web.

Thx for quick video 🧐

Hi, thx for the information, very good. Was thinking of getting k40 but I think you might’ve changed my mind. I don’t think I want to take the chance with my limited experience. Thanks again.

Good safety information, I know first hand what it feels like to get shocked by 25,000 volts thanks to a careless coworker who left the second anode of a, then state of the art, color TV laying loose on the metal work bench.

Hi

Ouch so basically you’re damned if you do and damned if you don’t. interesting that the RCCB didn’t cut out. To me if 20KV is going to the case then it should really trigger a safety device inside the appliance if the k40 won’t trigger GFCI or RCCB externally when it fails.

And this is another reason I would never get a k40. I don't want to have to reengineer it to have a ”pretty decent laser engraver” (k40 fans words not mine)

"Current kills; voltage doesn't" is such a misleading meme. Short circuit a AA battery and you can pull several amps. That's a lethal current, those things must be deadly!

You put down China, but this is something that could happen to any laser not just China one. I've seen shabby products come from all over. Just take a look at American cars. Maybe we should look at the ethics that the collages teaches the CEO of companies.

Im sire you are over simplifying things for safety. But hv alone obviously has nothing to do with how dangerous electrical energy is.