I have to admit that I am totally g-code illiterate. I really need to sit down one day and learn the code. For now I am hoping for some help.

The following was generated from Estlcam. It is supposed to mill a ~9 inch straight horizontal line. When I load it into linuxcnc and run it, the line produced is tiny and it looks like the step size is also tiny,

(Project Test1)
(Created by Estlcam version 11 build 11.040)
(Machining time about 00:02:11 hours)

(Required tools
(2.5MM)

G90
M03 S24000
G00 Z0.30000


(No. 1: Engraving 1)
G00 X0.00000 Y0.00000
G00 Z0.01969
G01 Z-0.03000 F8.00 S24000
G01 X9.59331 F10.00
G00 Z0.30000
G00 X0.00000

M05
M30

The following was produced by cambam and works as expected.

( Made using CamBam - http://www.cambam.co.uk )
( Test1 11/18/2018 2:59:53 PM )
( T0 : 0.098 )
G20 G90 G64 G40
G0 Z0.125
( T0 : 0.098 )
T0 M6
( Engrave1 )
G17
M3 S1000
G0 X0.8181 Y2.9225
G0 Z0.0625
G1 F10.0 Z-0.015
G1 F30.0 X10.4115
G1 F10.0 Z-0.02
G1 F30.0 X0.8181
G0 Z0.125
M5
M30


Waht is wrong with the estl cam one? Is it the wrong coordinates? The units? What?

 

I figured it out. Looks like Linux CNC needs to know it is inch mode (G20) if outputting in inches.

 

If you want the 'Bible' writing G & M code creating, 'The CNC Programming Handbook' by Peter Smid is considered one of the best.
Max.