How can I convert sheep's wool into bags?

I go to Clothier's Shop and ask to Construct yarn Bag.
It says: Needs 1 unused yarn cloth.
I go to Loom and ask to Weave Cloth (Wool/Hair Yarn).
It says: Needs 1 unused collected yarn thread.
But I already have it!
I'm playing version 0.40.16.
Best Answer
The basics to double check:
- Burrows (can your crafters reach the wool?)
- Shop Permissions (can the shop use any quality item?)
- Stockpile Permissions (can the stockpile be used by that shop/any shop?)
IIRC, some "wool" is actually hair gotten from butchering, and not from shearing. This type of thread can only be used by a hospital for suturing.
Try making a stockpile that only takes wool yarn (in bins) and only gives to the Loom. Make a second stockpile that only takes wool cloth and only gives to the Clothier's Shop. From scratch, shear the sheep and watch the wool be moved from the Farmer's Workshop to the pile, etc. If you can make a bag from that, but only from that then it's likely the result of butcher-hair. If you can move these items to the new stockpile in the first place then they may be forbidden or you have no idle dwarves with the correct labors enabled.
Pictures about "How can I convert sheep's wool into bags?"



How do you use sheep wool?
Here are some of the other tricks and uses for this natural fiber.How do you make yarn from sheep wool?
Spinning turns the wool pieces into a material that's usable. Spinning uses a wheel to spin 2-5 strands of wool together. This forms long, strong pieces of wool that you would recognize as yarn. Different processes create different kinds of yarn that work for distinct final products.Modern SHEEP FARMING Technologies - Wool Processing Factory - Sheep Shearing
Sources: Stack Exchange - This article follows the attribution requirements of Stack Exchange and is licensed under CC BY-SA 3.0.
Images: Trinity Kubassek, Rachel Claire, Jonathan Borba, Kat Smith