With Project Red freshly having a release for 1.12.2, I am very excited to start working it into a modpack, but I realized that compatibility support has not moved forward since 1.7.10 releases. Primarily, I miss the ability to create Red Alloy ingots using other modding features like the Tinkers Construct Smeltery.

Introducing Mojo-Redmetal, a fairly simple reproduction of this feature. It registers a new fluid: Molten Redmetal. This fluid can be created in a smeltery by blending various molten metals with Thermal Foundation's Destabilized Redstone (also conveniently meltable from redstone in a Smeltery). The molten metal can then be cast into ingots on a casting table. Redmetal can be created in the following ratios:

144mB Iron (1 ingot), 400mB Destabilized Redstone (4 dusts)
288mB Copper (2 ingots), 300mB Destabilized Redstone (3 dusts)
472mB Tin (3 ingots), 200mB Destabilized Redstone (2 dusts)
576mB Aluminum (4 ingots), 100mB Destabilized Redstone (1 dust)
288mB Silver (2 ingots), 200mB Destabilized Redstone (2 dusts)
288mB Gold (2 ingots), 100mB Destabilized Redstone (1 dust)

DISCLAIMER: This mod is provided as-is without any expectation of support. The author is not responsible for any adverse consequences of its use. The author IS responsible for any awesome consequences of its use.

1.19 update: only the molten fluid is included in the pack and dependencies on anything but Tinkers' Construct have been removed. Recipes for it can be added in a datapack.