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Engraving a cylinder on the 4th axis

Look up G107. I think that is cylindrical mapping. It will convert Y axis moves to A axis rotation. All you need is the G107 and the diameter of the part.
 
Please keep in mind that this program is 7 years old but I have an example of an engraving program I used. This was before I got software, man I forgot all the nice features the control had!

Code:
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O00426 
(ENGRAVING 1/2 TM SOCKET) 
(ENGRAVE ON THE 1.475 DIA/G107) 
(TEXT= .500 TM) 
(TURN MIRROR IMAGE ON-Y AXIS/G101) 
(OMEGAFLEX ASSEMBLY) 
(MATERIAL= 6061 ALUMINUM) 
(CYCLE TIME= :52) 
(5/19/06) 
(T18= 1/16 2FLT BALL MILL) 
(WORK OFFSET= G120) 
(HAAS INDEXER/COLLET) 
(X0= LEFT EDGE) 
(Y0= CENTER) 
(Z0= TOP OF PC.) 


(ENGRAVE) 
N1 G00 G17 G20 G40 G49 G80 G90 G98 
G53 Z0 
T18 M06 (1/16 2FLT BALL MILL) 
S5000 M03 
G120 X0.5 Y0 A0 
G43 Z1. H18 M08 


G101 Y0 (MIRROR IMAGE ON) 
G00 Z0.1 
G01 Z0.02 F3. 
G107 Y0 A0 R0.7375 (CYLYNDRICAL MAPPING ON) 
G47 P0 X0.5 Y0 I90. J0.25 R0.05 Z-0.01 E5. F5. (.500 TM) 
G107 (CANCEL CYLYDRICAL MAPPING) 
G100 Y0 (CANCEL MIRROR IMAGE) 

G00 G80 Z1. M09 
G49 G53 Z0 
G120 X0 Y12. A0 T18 M06 
M30 

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