Yes – typically generated in 3D CAD (there are many software choices available) – then either a screenshot, or an image export from the software.

Yes as the other have said once you have a CAD package it is often as easy to sketch something out with that and take a screen shot which can then just be treated like any other .jpg photo and posted in a thread. I have rather a lot in this album which have mostly been used to illustrate something in a thread as for me a picture is often worth more than a lot of words, particularly when I am trying to string them together.

On other forums where it is possible to attach different file types you can post a 3D pdf so the reader can look at the item from all angles, zoom in etc but we can't do that here

J

Edited By JasonB on 10/08/2017 10:23:28

Can also model stuff using other freebie modellers & render in a second package. I have occasionally in the past created stuff in a dedicated finite element package, passed it through my own translator and into a package like DAZ Studio (a freebie figure animation & rendering package that also imports the '.obj' format) for rendering. It's amazing how much more impressed the 'suits' are by rendered images than stress models.

Regards,

Richard