Make all the belts. Initially set to not build Red or Blue belts. Rotate inserters as needed to enable their construction.
Inputs (L -> R): Red/Green Circuits, Iron, Iron, Lubricant
Originally shared on the public FactorioPrints / Factorio School archive (factorioprints.com · factorio.school). Authorship preserved from the public catalog.
Make all the belts. Initially set to not build Red or Blue belts. Rotate inserters as needed to enable their construction.
Inputs (L -> R): Red/Green Circuits, Iron, Iron, Lubricant