/ rebar can be crafted with the following recipes

Autolearned
Player Recipe
Primary skill used: fabrication(2)
Required skills: N/A
Time to complete: 60 minutes
Tools required:
> 1 tool with chiseling quality of 3
> 1 tool with anvil quality of 3
> 1 tool with hammering quality of 3
> swage and die set
> electric forge (20 charges) OR acetylene torch (20 charges) OR charcoal forge (20 charges)
> pair of metal tongs
Components required:
> 1x chunk of steel OR 5x scrap metal
Byproducts:
(none)

Cannot Be Memorized
NPC Recipe
Primary skill used: fabrication(2)
Required skills: N/A
Time to complete: 9 minutes
Tools required:
> 1 tool with anvil quality of 3
> 1 tool with hammering quality of 5
> 1 tool with chiseling quality of 3
> pair of metal tongs
> swage and die set
> electric forge (10 charges) OR acetylene torch (2 charges) OR charcoal forge (10 charges)
Components required:
> 3x scrap metal
Byproducts:
(none)