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Messages - faroutacrylics

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1
it looks like a Bobcad V 22 issue, the software is full of bugs. You can't set the post processor out of the box and it takes a couple of hours of tech support just fix the corrupted file causing the problem.

What it's doing now is putting out bad code 2 out of 5 times which forces you to start over again on a project. Then if you can get it to work and actually generate what looks like accurate machine code you find out quickly that it is mixing incremental with absolute which apparently is creating irregular cuts and repeated "abnormal condition" error messages and causing Mach 3 to reset it self to match the code when it finds a G91 which is aways there now matter what you set it for.

2
There doesn't appear to be any backlash taking place, I've got a pretty tight machine. I looked at the code and I didn't see "G41 or G42. I'm still new at this so this may or may not be pertinent to the discussion but I am compensating for the tool in the tool path itself in regards to cutter diameter and type etc.

Initially i thought that the problem was due to the part moving under the side pressure of the bit and this does happen at times when the two sided tape fails to hold the part but this doesn't appear to be the case because all of the arcs have a certain portion that is irregular regardless if I'm cutting a circular pocket or  a circular profile cut. Since the "abnormal condition" alert flashes regardless of the setting in both bobcad and mach3 I'm thinking this is most likely the problem.

Does anyone else have any suggestions?
thanks in advance,
Nathan 

3
I'm running window XP and i'm using Bobcad version 22 set for absolute arcs and Mach 3 set for absolute for the distance mode setting. Everytime I run my G code created in Bobcad I wind up with circular cuts that are slightly off, as in almost true but not exactly. When the code is finished running in Mach 3 the abnormal condition button flashes the message "G90/G91" and then mach 3 resets the distance setting to incremental. I've looked through the g code and i didn't see anything listing a G90 or a G91 which from what i understand represents incremental.

I've also set both Bobcad and mach 3 to incremental and my arcs are still off slighly and the same abnormal condition button flashes with the same G code related message.

Does anyone know what's going on and is this problem causing my arcs to me less than perfect?

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