i know i saw some tutorial for Custom Crafting Table,
but if i remenber correctly, they can only used for Custom recipes in procedure,
so what i want is Extend of Default Crafting Table,
Like if you make items(any items) on this custom crafting table, the output item will be doubled. (or something like that)
it needs to import the recipes in forge or minecraft that loaded, (im not such a programmer but i think so)
Or maybe making Generator for Custom Crafting Table
If you want to change recipes of vanilla furnace, you can use recipes in minecraft namespace for this.
For more advanced altering of vanilla crafting table, you will need a lot of Java :D