Sunekan Standardized Parts

The Suneka has long approached the creation of goods and machines differently from other cultures. Where most cultures base production around individual skilled artisans mastering every part of production and measuring their skill by the quality of their works, the Suneka has glorifies mass production spread across consistently trained artisans who create interchangeable parts of a greater whole. Success in this tradition of mass production isn't measured by quality, but on consistency and stability. 
In its traditional form, Sunekan standardized production looks like a mixture between a temple, a chorus, and a factory. Artisans are trained through music and stories to ritualistically replicate the exact perfect shape of each component, and the entire flow of the assembly line is regulated by repetitious music. Workers move between playing the music, overseeing, and doing the actual work in shifts. Ritualistically, each worker shifts between servant and priest of their own tiny community, with each factory modeled as a tiny model of an idealized society and world. This isn't always the most efficient numerically, but it is stable, consistent, and generally gives a sense of agency to each worker that prevents workplace powerstruggles. 
Through the majority of Sunekan history, the Suneka used this traditional religious-musical assembly line to great effect. However, the last two centuries have been increasingly dominated by a new factorial system. This new system is more mechanical and less reverent, as water-powered machines have allowed untrained workers to replicate precision that was once only made possible by years of intense training. The trappings of the old system remain, and traditional temple-factories still dominate many trades, but the last century has made these new factories hard to ignore.

Access & Availability

Sunekan standardization is the basis for almost all complex Sunekan goods: muskets, armor, vehicles, and clocks are all produced this way. More complex assembly lines tend to be relegated to large cities with access to significant resources.
Non-Sunekan states have struggled to replicate Sunekan assembly lines and standardization, as they often lack the education systems, economic coordination, and cultural norms that enable this. Even the new assembly lines are considered too alien and uniquely Sunekan to be considered for adoption by most places.

Discovery

The earliest versions of this approach date back to the Divine Era, where early Sunekan cities would collect artisans in towns and cities to mass produce tools and goods for the countryside. It has evolved over time to incorporate new methods and technologies, and individual workshops have innovated their methods over the millennia.