I'm looking through your code, and it seems like you only have the copper and iron recipes implemented currently. In total, all the ores (including vanilla) are:
Iron
Copper
Tin
Lead
Silver
Gold
Aluminum
Titanium
Tungsten
Gem (Don't know if you want this one)
Cobalt
Zinc
Quartz
Nickel
Coal
Stone
You could probably do some LUA scripting to automatically generate ore conversion recipes by going through the list of ores, and for each ore in the list, create a recipe for every other ore.
Please guys, don't hold your breath... I only do modding as a side hobby, and I'm not really all that familiar with LUA, but I'll try my best to make this happen.
WOW, I came back to see if I could do a little work on this and found ^^^^ that. That's some awesome input. I'll take what you've done and see if I can't tie a ribbon around the remaining bits.
I guess I'll need someone willing to test it too as I can't.
Ongoing update: I now have all of the ores and 'recipes' added, but having some major issues trying to debug things stopping it from loading...
After 0.15 dropped I've had less time to figure out what is going wrong with mods as I've been playing a lot more, but to those that might be checking here - I'm still thinking about it and, yes it will be brought up to 0.15.