Which freeware is best for rendering??
Suggest some freewares to render IGES files.
No one... If you want have a good render you need pay.
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 keyshot 4.0
Try these 25 different programs,