You also can’t use it to create items that ordinarily require a high degree of craftsmanship, such as jewelry, weapons, glass, or armor, unless you have proficiency with the type of artisan’s tools used to craft such objects.

So you'd need to be half-decent at making a thing the hard way, before you can bang one out in ten minutes from a flawless slab of raw metal.

... no, hang on. You only need to be half-decent at using the relevant tools that would make a thing the hard way. So if you take a shop class you can make aerospace-grade parts. Or, less likely to be audited, and making use of the five-foot-cube limits, you can make some lovely garden sculptures for upper-middle-class schmucks.