Originally shared on the public FactorioPrints / Factorio School archive (factorioprints.com · factorio.school). Authorship preserved from the public catalog.
Got tired of creating this... so a PreFab 4 ore filtering lane... the 4 in 16 out is a problem but it really depends on the deposit... is it 70% iron? or 70% copper? so this just sets you up to have all 4 ores sorted to 4 lanes each. i find that using this against 6 red lanes of ore works perfectly with a storage array in line to the smelters or train loaders just to keep any one ore from backing up.
