Spell explication.

[Allen Aynes]

Can some one please tell me if this spell us permanent and if it is does it just mean making masterwork weapons and tools only take a hour?

https://www.d20pfsrd.com/magic/all-spells/m/masterwork-transformation/

[Daedalus the Dungeon Builder]

Well, it's duration is instantaneous, which means that it's better than permanent, since it can't be dispelled.

But yes, given an hour, a spellcaster capable of casting this spell, and the appropriate gear and material components...

... yes, you can make masterwork items in only an hour.

Or you could buy them at the local blacksmith.

[Allen Aynes]

Got ya. I'm not a magic user so I'm unfamiliar with the rules for all that stuff so thank you for that. So would you say this is really worth the spell slot?

[Mister Socks]

A spell slot, probably not. If you are a prepared caster keep it in your book, never know when it's gonna be useful. Likewise it's a very broken spell if your DM allows Blood Money.

[Avoron]

Mister Socks wrote:

A spell slot, probably not. If you are a prepared caster keep it in your book, never know when it's gonna be useful. Likewise it's a very broken spell if your DM allows Blood Money.

Or just take False Focus for free masterwork tools.

[Claxon]

It's not worth a spell known slot, and generally not worth preparing.

But you might have specific use for it at low levels before everyone can buy/has a magic or masterwork weapon.

[Allen Aynes]

Got ya. So I'm guessing it only works the one time right? It can't make a plus 1 into a plus 2 correct?

[Daedalus the Dungeon Builder]

I'm not sure I understand the question. A +1 weapon is already masterwork. You can't have a masterwork masterwork sword (or flawless, or whatever else). Masterwork is the pinnacle of non-magical enhancement, there's no '+2 masterwork' or anything. If you want a higher bonus, you need to turn it into a magic item via the crafting feats.

[Create Mr. Pitt]

Masterwork weapons are not +1, but they give a plus one to hit. As a cleric this spell came in handy in an AP where access to purchase and find masterwork weapons before level 5 or so was impossible (at least according to the DM). Also saves a little crafting time if you craft armors and weapons. Not the most useful spell, but not bad for a prepared caster to have in the holster for the end of the day when you still have open spell slots.