I'm intrigued by this question proposed by Greyfell.
He's a Master Saddler, he's accepted the recipe and is making Weightless Leather, an item that is not auctionable, but he feels there's a time restriction on it.
Or how many can be crafted at one time.
Or that his craft, MS, has a restriction of one item per seven day period.
I'm intrigued by all of this, Greyfell. Tell us what else is slowing you down in crafting......
There is no time restrictions on any crafts in any guild EXCEPT for one in each guild......
Try crafting 90 weightless leather next time and see if there's a time penalty for it.....