Hi All,

I'm just getting comfortable running Mach3 with my new CRP 4x4 Machine. In general things are working well. I've had some good and repeatable experiences cutting quite a few 2D parts. So at this point I thought I'd try some 3D carving.

Here's where my question comes up. When I cut 2D tool paths at 160 in/min., I see the feeds rise up to 160 in long straight-a-ways like they should. Now when I run a 3D tool path at 160 feed rate, the long straight cuts can climb as high as 600 in/min.!!!

I've checked the G-Code. The line before these fast cuts says, F160.0. Yet it will climb to my rapid setting of 600.

I'm thinking it MUST be something with Mach3 settings. I also posted this over in the dedicated Mach3 forum as well.

Any help would be appreciated.

-- Bernie