Step up to the Plate (Platesmithing)

 is a Masterwork Professions quest that unlocks Platesmithing recipes. Your Platesmithing must be rank 25 and your Stronghold Guild Hall must be at least rank 10 to take this quest.

Steps

 * Deliver Adamant Rivets to the Artisan
 * Obtain (12)
 * Deliver Adamant Plates to the Artisan
 * Obtain (4)
 * Deliver Tin Plate to the Artisan
 * Obtain
 * Deliver Adamant Trap Door to The Builder
 * Obtain
 * Return to the Artisan

Dialogue
After turning in first materials:

After turning in second materials:

After turning in third materials:

After delivering Adamant Trap Door to The Builder: