SmartFab Blog
Articles, sourcing tips, and behind-the-scenes notes on contract manufacturing.
Cable Harness DFM Checklist: 12 Fixes That Cut Cost Before You Quote
Small design choices on a wire harness — connector series, wire gauge, branch geometry — decide whether you pay $18 or $52 per assembly. Here are the ones that move the number most.
Injection Molding Tolerances: What Engineers Should Actually Specify
Tolerances that look reasonable in CAD can double your tooling cost or fail inspection. A practical guide to DIN 16742, wall thickness, and where to loosen up.
How to Write an RFQ for Contract Manufacturing (That Actually Gets a Real Quote)
A practical RFQ checklist for hardware teams. What to include for PCB, PCBA, harness, CNC, and injection molding so your quote comes back in days, not weeks.
Domestic vs Offshore PCB Manufacturing: The Real Total Cost
Unit price is only 40-60% of what you actually pay. Here is how freight, duty, lead time, and rework change the domestic vs offshore math on a real PCBA build.
IPC Class 2 vs Class 3 PCB Assembly: What Actually Changes
Class 3 is not just "higher quality." It changes acceptance criteria, inspection, rework rules, and your unit cost. Here is what your assembler is really doing differently.
PCB vs PCBA: What's the Difference and Why It Matters for Your Quote
PCB is the bare board. PCBA is the assembled board. Confusing the two on an RFQ is the fastest way to get a quote that misses your real cost by 5-10x.
Galvanneal vs Galvanized Steel: A Sourcing Guide for Hardware Teams
How galvanneal and galvanized steel compare on weldability, paint adhesion, and corrosion resistance — and when to spec each for enclosures, brackets, and chassis.
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