(Blue belts)
Input:
- 15x Electronic circuit (green circuit)
- 2x Advanced circuit (red circuit, 1.5 belts is in fact enough, bottom belt = half)
- 1x Sulfuric Acid (fluid)
Output:
- 1x Processing unit (blue circuit)
by Unknown Author · updated 12/4/2020 · 9

Originally shared on the public FactorioPrints / Factorio School archive (factorioprints.com · factorio.school). Authorship preserved from the public catalog.
(Blue belts)
Input:
Output: