For a person to use the Plasma cutter you would first need to draft up a 2D sketch in autocad, then the draft needs to be sent to Fusion 360 where the cutting lines are drafted up.
Here is the autocad sketch for my design
Fusion 360 is used to create the file that is then used the plasma cutter to determin what the cutting paths are
Here is the cutting path gif one Fusion 360
The next thing I did was plasma CNC my part out and it worked out very well
I had to do post processing on my crab which included chisseling all of the melted peaces of and then angle grinding it untill it shines.
Final product, as you see I over grinded the grab claws to give them that blue burnt look.