Bert Liu

Manufacturing in Taiwan. Notes on factories, systems, and supply chains.

How I think about manufacturing

Problems rarely stay in the process where they start.

A casting issue can show up later in finishing. Surface prep can decide whether coating works. Inspection is often where trust is either protected or lost.

I use this page to map the production layers I’m focused on: materials, forming, machining, finishing, inspection, assembly, and logistics.

My focus is the handoff between those layers — where risk appears, where specialists matter, and where control needs to stay close.

Layer Examples Why it matters
Material Aluminum, zinc, steel, stainless steel, plastics, copper alloys, recycled vs. virgin inputs Strength, weight, cost, corrosion resistance, thermal behavior, surface compatibility
Forming Die casting, gravity casting, investment casting, stamping, injection molding Shape, tooling cost, production volume, porosity risk, shrinkage, repeatability
Machining CNC, drilling, tapping, honing, datum features, tight-tolerance surfaces Precision, fit, threads, sealing areas, bore finish, assembly alignment
Surface prep Trimming, deburring, tumbling, bead blasting, cleaning Burr control, adhesion, appearance, coating consistency, paint/anodizing readiness
Finishing Painting, powder coating, anodizing, nickel plating, passivation, masking Durability, color, corrosion resistance, coating thickness, conductivity, wear resistance, feel, customer perception
Inspection / testing X-ray, CMM, dimensional checks, leakage testing, MEK rub test, salt spray testing, material certs Hidden defects, tolerance control, coating adhesion/cure, corrosion resistance, documentation, customer trust
Assembly / logistics Component assembly, packaging, staging, shipping, production coordination Delivery reliability, handling damage, supplier handoffs, field performance