Let me break down how PCB layers work in plain terms. Think of it like building a house - more floors let you do more, but cost more to build.

Single-Layer Boards: The Starter Home

• One copper layer, usually on the bottom

• Simple point-to-point wiring only

• Cheapest option, fastest to make

• Good for: Basic toys, simple power supplies, low-cost gadgets

Double-Layer Boards: The Two-Story House

• Copper on both sides, connected by small holes (vias)

• Twice the routing space of single-layer

• Still affordable, widely available

• Good for: Most consumer electronics, home appliances, basic controllers
  

Multi-Layer Boards: The Apartment Building

• 4-8 layers stacked together

• Can separate power, ground, and signals

• Better performance, less electrical noise

• Costs more, takes longer to make

• Good for: Smartphones, computers, automotive electronics

High-Layer Boards: The Skyscraper

• 10+ layers of complex circuitry

• Handles very dense, high-speed designs

• Best performance and reliability

• Most expensive, requires expert manufacturing

• Good for: Servers, medical equipment, aerospace systems

The Reality Check
More layers aren't always better. I've seen many designers over-specify their boards. If your design works on 4 layers, don't use 6. Every extra layer adds cost and complexity.

Our Advice
If you're not sure what you need, just ask. We'll look at your design and tell you the most cost-effective way to build it. Sometimes moving to more layers makes sense, sometimes we can optimize your layout to stay with fewer layers.

The goal is to get you a board that works reliably without paying for more than you need. We build all these types every day, so we can help you find the right balance for your project and budget.

Remember: The best PCB is the one that does its job well, ships on time, and doesn't blow your budget. Layer count is just one piece of that puzzle.