I am working on a 5-axis machine. I currently use Mach3 on a couple CNC's, but want to try FlashCut on this new machine. My issue is that after speaking with FlashCut, they state they "only support trunnion format 5-axis machines" with the current software.

I don't want to build using a trunnion, I want to use a B and C head for the spindle mount. My question is, does it matter? I have to set up my machine style/format within my CAM software (BobCAD v27), defining what axis is where, how the spindle is mounted, etc. All the details are defined in the CAM portion. So, does it "matter" if FlashCut "only supports" trunnion format 5-axis machines? The guy I spoke to said it could result in the feed rates being off. I know Mach3 does trajectory planning, so I could see if that ended up coming in to play here. Clearly as "far out" as the tool tip can get on a B-C head, the speed of the tool tip can vary a LOT compared to a 3-axis or a trunnion 5-axis machine. Will this cause me issues, or does the CAM "sort that out"?

Any input to help me out? I don't want to invest in FlashCut and make it a paperweight...