Greetings to you all. I'm pretty new at all this computer numerics stuff. I have a good grasp on the x-y-z system but the offset stuff is still a bit confusing to me. I drew up a part in my CAD software and a friend who uses GibbsCam at his shop created some G-code for me to make my parts. But it doesn't run right in Mach3. He asked me what post processor should be used and I had no idea but Fanuc looked familiar so we went with that. It took him about 2 minutes to load the dxf, create a tool path and post it to G-code but he's a busy guy an I don't want to bother him with my tiny tasks if possible. So basically, my question is this... what do I need to remove from the code below to have just the basic x-y-z movements? I've tried deleting the stuff that I though was causing problems but then the program just blows up. I don't want any tool diameter compensation, tool height compensation, or the table (fixture,jig) compensation. Can someone help me simplify this code? Thanks, gs

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O1( SIERRA BELLCRANK.NCF )
( FORMAT: FANUC 0M [R&S] M565.81.2.PST )
( 10/22/07 AT  6:20 PM )
( OUTPUT IN ABSOLUTE INCHES )
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( FIRST TOOL NOT IN SPINDLE )
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( TOOL 1: .125 FINISH ENDMILL )
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Maybe I should have mentioned...
I'm running Mach3 (demo) on a Taig 2019. I want to position my mill at the start of my workpiece and zero the axes. Maybe I'm going about it the wrong way but I understand it this way.

If the file was created with all the comp corrections included then it will not be accurate without it(;-)

How about posting the original DXF file and we will recreate it in LCAM and see what the difference is. Also include what size tool you will use.

You DO realize that if you do not do COMP in the gcode you have to do the comp when you draw the part or do an offsett in the cam side in order for it to be accurate(;-)

(;-) TP

I ended up redrawing the part with my own offsets for a .125 endmill. It really wasn't that hard to do but it was a little time consuming. I used emachineshop's free cad software because it's so easy to use. I have AutoCAD 2007 but it was a little confusing at first so I gave up on it. I have it back out now and I'm trying again on my new computer. Seems a little easier this time but still confusing. Anyway, it seems like I've read somewhere about AutoCAD outputting G-code? Any ideas on that?

I attached the original drawing below.

I realize that someone here could regenerate the G-code for me but I wouldn't want to rely on someone doing it every time.

I'll be milling this with a 1/8" endmill. So obviously, then offset should be 1/16" outward.

I'll attach the part that I redrew for tool path in this post.

I'm not going to need any help with this after all. It turns out that my eMachineShop software has an offset function already in the program. I just didn't realize that's what it is. They call it contour bit it takes a line (or curve or any continuous shape) and will offset that shape by the amount you specify - either inside or outside. So in addition to being WAY easier than any other CAD software, now I find that it has "tool path generation" built in. Well not really, but I can export the offset drawing into another program that will follow the dxf lines to create G-Code. I'm referring to the FlashCut demo. It makes nice, clean G-Code that even I can understand.