OK so this should be a simple question
Let's say I have a regular MW Scimitar and I'm a level 10 sorcerer
I cast Greater Magic Weapon on the scimitar, so it is now a +2 Scimitar. The +2 is an enhancement bonus. It also lasts for 10 hours.
Since my weapon has a +2 enhancement bonus, is it possible to take it to ye olde magic weaponsmith and have him make it vorpal for the cost of 50k?
Let's assume that during the construction of this vorpal sword I recast GMW every 10 hours and at no point does it lose its magical properties.
Would that work? The rules say that the weapon must have at least a +1 enhancement bonus, which is met by the spell.
I think it would work but I wanted input on this. I also assume that once GMW expires, the scimitar will cease to be vorpal and be a regular MW scim again, since it no longer has any enhancement bonuses
NO.
Crafting takes far longer than 10 hours to accomplish, and before you ask, I would say you can't keep casting GMW on the item being crafted just before the previous duration runs out. Not without ruining the entire process of enchanting. At least in my opinion.
Master Arminas