This is my basic layout for the basic melters. There are 3 belts on 24 arc smelter.
Important!
The slots of the inputs and outputs of the logistics station are already predefined with the slot numbers but no materials are assigned yet. Therefore, you can simply insert the desired raw and finished products and proliferators and feed the melter recipes with the appropriate recipe.
1) Raw product (output) 2) Final product (input) 3) Proliferator