I found myself extremely annoyed at how casting was handled in space age, mostly to do with the fact that how it was by default encouraged a sort of play where you didn't actually want to use most of the casting recipes, as they quickly became less productive than doing the normal method of processing them. The part that annoyed me specifically is that somehow, casting directly with molten metals was more wasteful than machining down the parts you needed.

This mod fixes what annoyed me, it redoes the vanilla casting recipes to be ever so slightly more productive than the most productive way of machining the item, ignoring any effects quality would have, it additionally assigns various recipes to either the foundry or the EM plant based on what I think would make sense.

Adding casting recipes include:
-Engines
-Rails
-Heat Pipes
-Ammunition
-Space Platform Foundations
Recipes added to the foundry include:
-Pumps
-All forms of mining drill
-Offshore Pumps
-Pumpjacks
-Steam Boilers, Engines, Turbines and Heat Exchangers
-Rail Ramps and Supports
-The toolbelt
Recipes added to the EM plant include:
-Almost all equipment
-All forms of inserters
-Rail Signals, and Chain Signals
-All logic circuit parts
-Laser Turrets
-Radars
-Robots and Roboports
-Railgun Ammo

In addition to these, certain modded items are also included
Modded Casting Recipes include:
-Ammunition (Krastorio 2 Spaced Out)
-Single Cylinder Engines (AAI Industry)
-Multi Cylinder Engines (AAI Industry)
Modded Recipes added to the foundry include:
-Wind Turbines (Krastorio 2 Spaced Out)
-Steel Pumps (Krastorio 2 Spaced Out)
-MK2 Mining Drills (Krastorio 2 Spaced Out)
-Quarry Drills (Krastorio 2 Spaced Out)
-Advanced Steam Turbines (Krastorio 2 Spaced Out)
-Burner Turbine (AAI Industry)
Modded recipes added to the EM plant include:
-All Equipment in K2SO
-Laser artillery (Krastorio 2 Spaced Out)
-Advanced Radars (Krastorio 2 Spaced Out)
-Tesla Coils (Krastorio 2 Spaced Out)
-Big and Small Roboports (Krastorio 2 Spaced Out)
-Small Electric Motors (AAI Industry)
-Fusion Robots (FusionPoweredRobots)

Additionally recipes that need to be adjusted to account for changes with K2SO and AAI Industry have those adjustments made when they are installed