Hello, I'm working on a poster and senior thesis in materials science research and need to draw schematic diagrams of a few objects including: -a PLD chamber -Thin films -XRD -SEM -energy diagrams -a sin wave I've downloads inkscape and have tried to draw in powerpoint so far. Are there better tools for 3D drawing? Inkscape is great for vector drawing and stuff like that but it's difficult to draw 3D objects and curved line, in particular sin waves (I need to draw photons sometimes.) Any suggestions? I thought about using old CAD programs for thin films.