Chain Dog Collar is crafted with Blacksmithing in Mabinogi. This page lists everything needed to make it, checked against the game as it exists today. The interactive planner lives in the Blacksmith Companion.
How to get the manual
The manual is rank F and survives 30 uses; every crafting attempt spends one use.
Ferghus when using [[Fleta#Rab's Dog Collar|Rab's Dog Collar]] Keyword.: source of record (100 gold).
Materials
Expect about 1 attempt per finished item (100% average progress per attempt). Per-attempt materials are consumed on every attempt; finishing materials once per item.
Each attempt uses
5× Iron Ingot — refine from Iron Ore (common low-rank Refining output)
Finishing (once per item)
1× Large Nail — hit props (lamp posts, signs, statues) or common low-level monster drops