I used to play with 3DS Max when I was younger, I enjoyed building models and rendering them. I want to dust off my mediocre skills and try my hand at building some accessories and addons for RCs. I am looking for some recommendations for some affordable or free software that exports models that print nicely on a 3D printer. I am playing with Tinkercad but I am not a fan of browser based tools in general. What software are you using? Any good tutorial sites?