Plasma Table Build - Plasma Bot 4.0

[SeanMurphy265]

I run 3/32 rods 7018 & 7014 all the time on 110v. I sold that HF welder to get my Power Arc 140st, and I was amazed at the difference in power. It's good for smaller stuff on 110v, and I use it quite a bit for tacking and fitting things together. I use it more than any other welder I own. I do a little dc tigging wit it here and there as well. For the money you cannot beat it! It will jump up there and weld 1/8 7018 at 125-30 amps with no problems.

[KSmith]

I run 3/32 rods 7018 & 7014 all the time on 110v. I sold that HF welder to get my Power Arc 140st, and I was amazed at the difference in power. It's good for smaller stuff on 110v, and I use it quite a bit for tacking and fitting things together. I use it more than any other welder I own. I do a little dc tigging wit it here and there as well. For the money you cannot beat it! It will jump up there and weld 1/8 7018 at 125-30 amps with no problems.

I can see it would be a great deal, with the 220v capability, lifttig torch and ability, carrying case, digital readout, extra power. Good for me to hear, that you can compare to your old HF 80amp too. For 130 bucks more than the HF welder, you are getting a huge increase in useability with the 140ST. A good value. If I needed it I would get one at the price, but wanting to move all the way up to the 200DX.

ken

[SeanMurphy265]

Got some work done today, I'm nearing the end of the fabrication phase. I'll be glad to get to the electronics phase!
I decided it would be better to bolt the plates on instead of welding them. This will allow me to slide my carriages on and off without taking them apart on the rails.



I needed to make sure my rails are properly spaced and the gantry would slide without getting in a bind.







I was going to drill and tap holes for set screws; needless to say that sucks! I'm going to use the double sided tape that was required. I may go back and add set screws and loctite.

[acourtjester]

HI Sean
You be getting close to making sparks. With mach 3 I would suggest you hook up the motors and do you setup for pin selection for the motors first. That way you don't need to think about any mechanical stuff or how fast they are going. These may help get you started.
You select the pins under config. and ports & pins you must tell it the printer port which is 1 along with the other info (step port 1 and dir port 1 ) enable the axis you are using. X,Y & Z maybe A for the 4th.
Load mach 3 and start it you will get a menu showing Mach 3 mil. Mach 3 turn, and plasma select plasma and use that until you get more info. All you changes will be kept in it. Or you can create another and call it what you want. If you want to copy or back it up its in the Mach 3 folder with a file extension of .XML (myplasma.xml example).

Wire colors for the BOB to Driver inter connect.
Plus 5 volts goes from BOB +5 volts output to each driver Pls+ wire color is orange. And from BOB + 5 volts to each driver Dir+ is a yellow wire.
For driver X Pls- is violet, X Dir- is green Pins 2 and 3
For driver Y Pls- is blue, Y Dir- is black Pins 3 and 4
For driver Z Pls- is white, Z Dir- is red Pins 6 and 7

All motor wiring is the same
Driver output A+ is white, A- is red, B+ is green, B- is black
The shields from each motor cable is only connected inside the controller to

Have fun
Tom

[SeanMurphy265]

My kit was pre-wired, I do have to wire my plasma cutter and THC.
This is how it should be wired.
http://www.probotix.com/diagrams/4-A...ng_diagram.pdf

Here are the steps I have followed so far.
http://www.probotix.com/downloads/ma...creenshots.gif

Slaving the axis
http://www.needfulthings.net/shopdro...ay;threadid=13
Motor tuning
http://www.needfulthings.net/shopdro...ay;threadid=81

I have not done this part yet.
http://www.needfulthings.net/shopdro...y;threadid=100
Safe Z setup
http://www.needfulthings.net/shopdro...ay;threadid=85

My biggest question is how do I wire my Everlast 60C to
THC
http://www.eagleplasma.com/thc_en.pdf
and to wire this to my breakout board.

[sportbike]

Drill an oversized hole in the gear rack. Drill for 50% thread rather than 75%

[SeanMurphy265]

I picked up my refurb windows XP computer from Walmart. I ordered it site to store, and it cost me $136.00 with tax with keyboard and mouse.


I ran one of the gcodes listed to make sure the motors would work. I realize that I have no clue how to run Mach3! I am very familiar with AutoCad and will probably use SheetCam.


I have to finish attaching the gear rack to my rails and on to the electronics / software part of the project.