On this Plasma cutting table you will have 3 distinct parts .
- The plasma generator ( I use an Hypertherm Powermax 45 or a Esab CutMaster A40 )
- The Frame ( build with vslot rails and xtrem solid wheel ) , based on an OX CNC from vslot-europe
- The Water pan ( Martyr , waterpan ... )
For the plasma generator , you have 2 choices .. if you want a nice cut , cutting thick sheet of steel and that you build worked on the first try .. that have a price .. buy an Hypertherm or Esab generator .
I tried with low cost chinese plasma generator but i never achieve to have a good result .
Working size is around 130cm x 130cm
Frame take around 1 week to be build and wired correctly .
And the water pan was made localy by a friend ( you can work without it , but you will have to use a smoke extractor .
Step 1: The Frame
The frame of this plasma cutting table is based on the OX CNC from vslot-europe .
Some profiles were added to rigidify the build and support the machine .
Step 2: Add a THC ( Torch Height Control )
A THC is a nice tool who can help you if you cut big parts .
The THC adjust the height of your torch above your material .
I bought a low cost THC : a Proma THC SD
There is 2 way to do the THC connection
.1 / using a plug on the back side of my hyperterm .( with 1/50 scale )
2 / Directly on the row voltage of the arc I try both , i had some trouble with de 1/50 divider ( voltage was not correct ) so i 'm now using the raw value of the arc and it is much better .
Step 3: Electronic
3 Nema 23 steppers ( 2 for Y axis and 1 for X axis )
1 Nema 17 stepper ( z axis )
4 stepper drivers
1 Mach3 compatible controller board ( USB )
1 THC Proma
Step 4: Floating Head VS Inductive Sensor
On this build i choose to use a floating head instead an inductive sensor because I was afraid that the parasites created by the plasma arc pertube the operation of the inductive sensor.
You can see above some pictures of the floating head
Step 5: Some of My Works
Some of my works made with this plasma cutting table .
Step 6: Software
Create you parts :
I use autodesk autocad or solidworks or google sketchup (free )
Create your gcode file :
I use sheetcam for this operation ( specialized for plasma , milling , laser cutting )
And finaly send your gcode to your machine :
Depending of your electronic board , you can use universal gcode sender ( forg GRBL controler ) or MACH3 if you have a mach3 compatible board .
Step 7: Some Files
Those are some files who can help you in your build :
Coming soon ..