I lucked into an Aspire license. I’m still figuring out the software, but I’ve figured one thing out so far. I setup my material with inches, and then when exporting the toolpath you have to select a post-processor, and it comes with … hundreds?.. of options. Long mill isn’t among them. So after a few bad guesses I went with the “Shapeoko (inch)” and that worked pretty well. The measurements came out as dead-on as I can measure with a simple tape measure. Thought I would share for the benefit of anyone else that runs into this situation.