Its true that we have a really hard time to find correct settings for tool changing. This was only one which works. Can you be please more specific what is wrong in the settings?
Anyway I used corrected gcode from
mactec54 ( thank you very much ) and it really works. With exception of G53 Z0 instead G00 Z0 at the end of the blocks. Now the code with three tool changes and same object looks like this:
%
O00001
N5 G21 G17 G40 G80 G90
N10 T01 M06 (6/6 1-tooth Al VHF)
N15 G54 G90 G94
N20 S25000 M03
N25 G90 G42 D01 G00 X72. Y28.
N30 G43 H01 Z1. M07
N35 G01 Z-1. F30.
N40 X28. F1200.
N45 Y72.
N50 X72.
N55 Y28.
N60 Z1. F500. M09
N65 G40 G00 X72. Y28.
N70 G53 Z0
M05
N75 T02 M06 (3/6 1-tooth Al VHF)
N80 G54 G90 G94
N85 S28000 M03
N90 G90 G42 D02 X73.5 Y26.5
N95 G43 H02 Z1. M07
N100 G01 Z-1. F72.
N105 X26.5 F1019.2
N110 Y73.5
N115 X73.5
N120 Y26.5
N125 Z1. F500. M09
N130 G40 G00 X73.5 Y26.5
N135 G53 Z0
M05
N140 T04 M06 (2/6 1-tooth Al VHF)
N145 G54 G90 G94
N150 S34000 M03
N155 G90 G42 D04 X74. Y26.
N160 G43 H04 Z1. M07
N165 G01 Z-1. F72.
N170 X26. F1200.
N175 Y74.
N180 X74.
N185 Y26.
N190 Z1. F500. M09
N195 G40 G00 X74. Y26.
N200 G53 Z0
M05
N205 G54 X0 Y0
N210 M30
%
So far so good. All tools are milling in the same height so the tool offset should work ( somehow
).