( longbow can be crafted with the following recipes

Autolearned
Player Recipe
Primary skill used: fabrication(3)
Required skills: archery(3)
Time to complete: 15 minutes
Tools required:
> 1 tool with cutting quality of 1
Components required:
> 1x long stick OR 1x plank
> 2x long string OR 12x short string OR 600x thread OR 600x sinew OR 600x plant fiber OR 600x yarn
Byproducts:
(none)
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This recipe can be found in the following books when fabrication is at least the required level:
Zen and the Art of Archery (level 2)
The Bowyer's Buddy (level 1)
Lessons for the Novice Bowhunter (level 3)