Requesting to have Cobalt and Ardite Ore -> Cobalt and Ardite Ingot recipes added to Arc Furnace.

Additionally, requesting Cobalt+Ardite -> Manyullyn Alloying recipe added to Arc Furnace.

There is some comment in the CraftTweaker file for the Arc Furnace mentioning that TiCo loads itself in an odd order, and it seems to suggest that TiCo adds its own recipes to the Arc Furnace at some point, however these recipes do not exist in game. Adding the recipes via Craft Tweaker seems to work fine for me.

//Alloy Manyullyn
immersiveEngineering.addArcFurn(tconstruct:ingots:2, tconstruct:ingots:0, slag, 200, 512, [tconstruct:ingots:1]);
immersiveEngineering.addArcFurn(tconstruct:ingots:2, tconstruct:ingots:1, slag, 200, 512, [tconstruct:ingots:0]);

//Smelt Ore to Ingots
immersiveEngineering.addArcFurn(tconstruct:ingots:1, tconstruct:ore:1, slag, 100, 512);
immersiveEngineering.addArcFurn(tconstruct:ingots:0, tconstruct:ore:0, slag, 100, 512);

(For consistency you could change the Alloy recipe to require the ore for the "extra" slot instead of another ingot, however unlike most metals used in alloying TiCo does not have a "dust" equivalent so it is impossible to go back from Ingot form to a form that could be alloyed. Just a thought.)