steel and aluminum scaffolding with the bottom and front side open, so it can be used with this (https://imgur.com/JAunsme) setup.

so basically it'd looks like this https://imgur.com/xdBDKOd
alternatively https://imgur.com/2HBlfiD

Cheerio 😄

Hi - cheers for the suggestion. I would recommend to place this request in ImmersiveEngineering itself, because these blocks have to be conveyors to make your shown setup working.
Conveyors are a basic part of the core IE, addons should tackle them.
BluSunrize and Malte are very open for ideas - give it a try in the IE repository, I am sure they will answer. Cheers -

Leo, did you get a response from the IE repo (can we close this issue here)? cheers -

Oh sorry, yes you can close :)