I Might Just Know What I'm Talking About
Join Date: Jan 2000
Location: Charleston, South Carolina
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Usually there is a third party software involved, or the machine comes with it's own software.
Typically you have to do some work on the drawings to turn the "faces" you want cut into polylines, then add tooling information (machine head, cutter size, depth, direction) to the polylines, turning them into "tool paths". Then the software uses a (machine specific) "post processor" to create the G-code.
Even the G-code is becoming obsolete these days. All the "coding" is being done behind the scenes of the software. G-code is similar to DOS machines because it's very cumbersome. Newer software packages are windows based, and do all the "thinking" for you.
G-code is actually very easy to understand. But you have to be flawless in execution or you don't get what you THOUGHT you were asking for. The machine will cut what the code means, whether that's what you wanted or not.
The last job I had we converted Inventor drawings to AutoCAD drawings then used Router-CIM (Komo machine)software to create the toolpaths (and G-code).
I'm not sure what "tk mini" is........
The end result has to match your machine, so contact the supplier to see what they recommend.
I hope this is helpful......