Hi everyone, as the title says, I am looking for a 3D cad to help visualise designs in piping systems and cut down errors. As a short background, I work in a small company which occasionally designs industrial gas pipings for pneumatic systems, gas delivery systems (to a lab, workshop, etc), and basically assemblies of gas systems. As we only do small scale projects so far, I have only ever used 2D cad, and have absolutely 0 experience with 3D cad (aside from sketchup, but it's more of a sketching and layout tool anyway). I've done some googling, and I'm impressed with Solidworks' demo for oil and gas LINK. However, SWX is expensive, and being in a developing country doesn't help much with my budget. I'm also looking at AVICAD with the Mech-Q plugin, but I haven't been able to find any reviews or anything. So does anyone have any experience with the AVICAD? I'm looking for more info before I sink my time to learning it. Or do you guys have other recommendations for it?