Re: G-CODE TO RUN ON CYLINDICAL PARTS
I am guessing that you have some G2 and or G3 (arc) commands in the F-Engrave output. If this is the case changing the "X" values to "A" would likely produce unexpected results (including X movements). You can disable the G2/G3 output in F-Engrave by un-selecting "Enable Arc Fitting" in the F-Engrave "Settings" window.
There are programs available to automatically do the conversion that you are attempting to do. One of them is written by the same guy that wrote F-Engrave (that is me by the way) it is called G-Code Ripper
G-Code Ripper
(For future reference you might consider posting questions of this nature under another topic. This has nothing to do with "General Business Practices / Pricing" For further help on this issue try the open source section of CNCZone There are threads for both F-Engrave and G-Code Ripper)
Scorch
www.scorchworks.com