Hello, first off, I am new to this forum as well as MCX. I had training in april and all is going great with the machining end of things. I have started to doodle with designing to familiarize myself a bit more with the program. Here is a repeating problem for me , I create a wireframe drawings and I want to surface them in sections, I am using "net surface" with the "closed chain" and "open chain" boxes checked in the options window. I window pick and I still get the "along surface out of sequence" note. I would like to know if there are some hard rules/tips to follow when creating surfaces. The file I have created appears quite simple to me as far as surfaces go, maybe I am missing something? Anyway here is a link to my file that I am struggling with. It is in the MCX folder on the FTP site the file is named: HATCH LEFT. Thanks so much for your time. ftp://www.ppcadcam.com/Mastercam_forum/MCX_Files/