This is not a taper or thread only normal turning from X20 to X10.
Well I donīt like write lot of code like this:
***** the sub text*******
N10 G00 Z0 X20
N20 G01 Z-10
N30 G00 X21
N40 G00 Z0
N50 G00 X 19.5
N60 G01 Z-10
and so on to X is 10.00
*********************
(if my cut on X is 0.5 I need to write this N10-N60 20 times
In some machin you are writing a sub menu as Sinumerik G901 R3=10 P1.
Like IF THEN ELSE as Pascal or Basic code.
IF <X10 call ***SUB TEXT *** again, until I have 10.00 on X
Hope this explanation is better.
Sorry about my english
