Hello
Your model should be fixed using 'join option'
+1, you must end up with an unique 3D surface.
I can't unzip Bubba's example too see, but the job is done in to stages:
Unrolling the 3D model to obtain a "flat" 3D surface that can be used with standard 3D surface operations, then wrap the resulting Gcode with Wrapper plugin if you're using CamBam V0.98, or the RotaryX or Y post processor if you're using V1.0 (it is more easy to use the post pro to wrap)
1)
Unroll 3D model to get a "flat" surface of the unrolled model.
Your 3D model must first be aligned to Y axis to perform the unroll operation, then you can use a standard 3D surface machining operation to generate the toolpath on the unrolled surface.
2) Use the Wrapper plugin or the Rotary post processor to wrap the Gcode
http://www.atelier-des-fougeres.fr/Cambam/Aide/Plugins/Unroll3D_doc_EN.html++
David
++
David