Mana-Saturated Spin Gear is crafted with Hillwen Engineering in Mabinogi. This page lists everything needed to make it, checked against the game as it exists today. The interactive planner lives in the Hillwen Companion.
Recipe availability
Mana-Saturated Spin Gear is a rank 3 Hillwen Engineering recipe with a best success rate of 98% at rank 1 and dan ranks.
Materials
Each craft uses
3× Bri Leith Empowered Crest — Buy it from Leannan's shop for 3 Bri Leith Obols earned in the Bri Leith raid.
10× Strange Metal Fragment — Trade Bri Leith Obols to Leannan in the Bri Leith mission shop.
3× Enchanted Melding Agent — Buy from Leannan's shop in Bri Leith for 500,000 gold.