& steel boom can be crafted with the following recipes

Player Recipe
Primary skill used: mechanics(5)
Required skills: fabrication(3)
Time to complete: 360 minutes
Tools required:
> 1 tool with hammering quality of 2
> 1 tool with metal sawing quality of 1
> 1 tool with fine bolt turning quality of 1
> 1 tool with glare protection quality of 1
> arc welder (100 charges) OR makeshift arc welder (150 charges) OR integrated welder (150 charges) OR acetylene torch (20 charges) OR 377-UASTA (weaponized) (20 charges) OR 377-UASTA plasma torch (10 charges)
Components required:
> 32x pipe
> 1x steel chain
> 2x lump of steel OR 8x chunk of steel OR 40x scrap metal
Byproducts:
(none)
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This recipe can be found in the following books when mechanics is at least the required level:
DIY Compendium (level 6)
Mechanical Mastery (level 5)