Magic Craftsmanship is for HQing products, the higher your Magic Craftsmanship the more "Quality" you gain per success.
HQing items is magical? It just would be nice if the developers gave some crystal clear answers. Facts, not statements about what someone "thinks" it might do.


Also recipes have a minium requirement of craftmanship and/or magic craftsmanship and/or control. Those are things that shouldn't be hidden, but should be listed in the recipe (for example in the windowthat tell you how many shards you need).