This mod takes 'dorfl' https://mods.factorio.com/mod/logiquipment mod and extends it to include the cargo wagon entity, for those of us who want construction trains.
Mods introducing new content into the game.
Augmented or new ways of transporting materials - belts, inserters, pipes!
Is there any reason not to allow this equipment to be stacked?
Thanks.
Yup, it was down to the requirement to be able to rotate the module to change its mode and enable/disable requesting from buffer chests.