I bought a plasma cutter and then decided that I needed to build a CNC table for it. I have part 1 posted and will have more soon
https://youtu.be/ZgO_W28WIMM
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I bought a plasma cutter and then decided that I needed to build a CNC table for it. I have part 1 posted and will have more soon
https://youtu.be/ZgO_W28WIMM
Here’s part 2... I cover the 3D parts that I made for the unit.
https://youtu.be/uW32GKrL-j4
Nice videos and a very nice machine build.
Maybe I missed it but what is the working area size? By the way I hope you haveafull enclosure plan for the electronics, they look rather exposed in the videos.
The water pan is 29”x50” so the working area is just a little smaller, maybe an inch in each direction. Yeah, I’m going to put a recessed clear cover over the face and there is protection behind the panel where the electronics are mounted...
I would love to have one of these in my shop. I don't quite have the room for one that big, but I could see myself using a 24" x 24" unit A LOT. What do you guess that you have into it cost wise?
That’s a really good question, I haven’t sat down and figured it out yet. The cost for me was in the controller, motors, drivers and power supplies. The framework and gantries were not very expensive. If I had to guess, I would say less than $1500...
That's a rough idea, which was what I was curious about. I know things will vary, but a ballpark idea gives a person a budget to start with. Some of my projects have exceeded my guestimated budget by multiples of 5, so I like to be prepared. :lol:Quote:
Originally Posted by Sgbarker
That happens to me a lot too!!😀
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Update on the DIY plasma cutter. It’s alive
https://youtu.be/6Zah10gMg3I
Thanks Jon... not sure why I was having trouble with the link. Any suggestions for future posts?
This video show how I did the Torch height controller interface to my Hypertherm powermax 900.
DIY CNC plasma cutter part 3
https://youtu.be/8pqXkwY87kI
I had some questions about how I did electrical and electronic isolation. So I put together a short video to explain how I did it. Hope it helps!
https://youtu.be/3aa7M_INt2I
Obviously in your case it isn't a problem, but when using multiple switch mode power supplies like that you can run into issues with inrush current. That's like the starting current on a motor. Power supplies usually limit that current to 50 amps for 1-2 cycles of the power main so wire heating isn't as much an issue as the power switch blowing up.
A place I worked at was testing lots of production units with those power supplies. They were plugging them into a 6 outlet power strip on the test bench one at a time and that always worked. For some reason a person (NOT me) turned off the switch on the power strip and then back on with all 6 devices plugged in. The power strip blew up in his hand.
Don't do that! :)
That’s interesting, I haven’t had any issues at all. I’m using Nema 23 stepper motors so they don’t draw a lot current even at start up, I think it’s because the motor drivers limit the current anyway. I’ll have to keep an eye on it... thanks
Load on the supply isn't critical, the surge is just getting the power supplies started up before they even start producing an output.Quote:
Originally Posted by Sgbarker
I ran into the problem on a smaller scale on some medical equipment I designed mumble decades ago, I had one switching supply powering another. The startup current of the second one would trip out the first one. I had to devise a soft-start for it. Now most supplies have fold-back current limits on the output, they reduce the voltage to keep the output wattage in check but since they still supply some it lets things get going. Solves most startup problems like I had.