Which freeware is best for rendering??
6 Answers

Why don't you use Solidworks' 360 render engine? I rendered the image attached entirely in Solidworks. ...Including any illumination and translucency.
Answered with a tutorial: https://grabcad.com/tutorials/which-freeware-is-best-for-rendering

Try these 25 different programs,
http://www.hongkiat.com/blog/25-free-3d-modelling-applications-you-should-not-miss/