PCB Prototyping

Prototyping a printed circuit board means getting from a design (or a breadboard that works) to a physical board you can test. There are more routes than most people realize: a breadboard or perfboard in an hour, a milled or etched board in an afternoon, a professional board from a fabrication service in a week or two, and an assembled batch from an assembly service. The right choice depends on how many boards you need, how fine the parts are and how much time and money you have. This guide takes the physical side in nine pages, from choosing a route to first power-up, with the cost and time arithmetic worked out. The design side (trace width, stack-up, layout) is in PCB Design and Layout, the circuit in Electronics Fundamentals and the soldering in Soldering.

Start here: what do you need?

I need to…	Go to
decide between breadboard, home-made and a fabricated board	Choosing a Route: Breadboard to Production
test an idea quickly, or know what a breadboard does to my circuit	Breadboards, Perfboard and Hand Wiring
make a board at home with chemicals	Home Etching: Toner Transfer and Photoresist
make a board on a CNC machine	CNC Isolation Milling
order boards online and know what to check	Ordering from a Fabrication Service
assemble boards: by hand, with a stencil and oven, or by a service	Assembly: Stencils, Reflow and Assembly Services
power up a new board safely and find faults	First Power-Up, Bring-up and Testing
estimate cost, quantity and delivery time	Cost, Quantity and Lead Time
work safely with etchants, dust, UV and hot tools	Chemicals, Dust, Tools and Safety

A suggested order

Read Choosing a Route: Breadboard to Production first. Then follow the route you choose: Breadboards, Perfboard and Hand Wiring, Home Etching: Toner Transfer and Photoresist, CNC Isolation Milling or Ordering from a Fabrication Service. Everyone needs Assembly: Stencils, Reflow and Assembly Services, First Power-Up, Bring-up and Testing and Chemicals, Dust, Tools and Safety; Cost, Quantity and Lead Time helps plan.

1. Choosing a Route: Breadboard to Production: Every way of making a board compared on time, cost, quality and quantity, and how to choose.
2. Breadboards, Perfboard and Hand Wiring: What a breadboard does to your circuit, perfboard and stripboard layout, wire-wrap and dead-bug construction.
3. Home Etching: Toner Transfer and Photoresist: Making a board with chemicals: transfer, exposure, etch time, undercut, copper budget and drilling.
4. CNC Isolation Milling: Cutting a board with a V-bit: cut width, depth, feeds, leveling, drilling and what a mill can and cannot do.
5. Ordering from a Fabrication Service: Choosing a service, the options on the form, files, the engineering check and what to inspect on arrival.
6. Assembly: Stencils, Reflow and Assembly Services: Hand, stencil and oven assembly, assembly services, costs and when each makes sense.
7. First Power-Up, Bring-up and Testing: Inspecting, checking for shorts, powering with a limit, bringing each part up and finding faults.
8. Cost, Quantity and Lead Time: What drives the price, panels, break-even between methods, shipping and duty, and the cost of a respin.
9. Chemicals, Dust, Tools and Safety: Etchants, fiberglass dust, UV, hot tools and waste: exposures, controls and disposal.

The routes at a glance

Route	Time to first board	Quality	Best for
Breadboard / perfboard	Minutes to hours	Hand-wired; poor above about 10 MHz	Testing an idea; one-off simple circuits
Home etching	Hours	Single or double sided, no plated holes, 0.3 mm tracks	Learning; simple one-off boards
CNC milling	Hours	Clean 0.2 to 0.3 mm tracks, no plated holes	Fast single-sided test boards
Fabrication service	1 to 2 weeks	Professional: plated holes, mask, silkscreen, many layers	Almost everything that will be built twice
Assembly service	2 to 4 weeks	Machine-placed parts, tested	Fine-pitch parts or batches of 10 or more

Quick reference numbers

Topic	Number	Page
Break-even, service against home etching	about 5 boards (illustrative model)	Cost, Quantity and Lead Time
Break-even, service against CNC milling	about 14 boards (illustrative model)	Cost, Quantity and Lead Time
Etch undercut	about 35 µm per side (1 oz copper)	Home Etching
V-bit cut width	0.15 mm for a 30° bit at 0.1 mm depth	CNC Isolation Milling
Fabrication time	2 to 5 days plus shipping	Ordering from a Fabrication Service
Stencil foil	0.12 mm (0.10 mm for fine pitch)	Assembly
First power-up current limit	50 to 100 mA, then raise	First Power-Up, Bring-up and Testing
Etchant capacity	about 30 g of copper per liter	Chemicals, Dust, Tools and Safety

Related guides and tools

• PCB Design and Layout: the design side, and the PCB Trace Width Calculator.
• Soldering: hand soldering, paste and reflow.
• Prototyping Techniques: prototyping whole products, not just boards.
• CNC Machining and Workshop Safety.
• Design, Testing and Troubleshooting: finding faults in electronics.

FAQ

What is the cheapest way to get a custom PCB?

For a few boards, a low-cost online fabrication service: about ten small two-layer boards for the price of a lunch plus shipping, in one to two weeks. For a single simple board in an hour, perfboard or a milled board.

Can I make a PCB at home?

Yes: toner transfer or photoresist etching, or CNC isolation milling, make single- and two-sided boards without plated holes. See Home Etching and CNC Isolation Milling.

How long does it take to get boards made?

Fabrication takes 2 to 5 days; shipping 3 to 7 days by express or 1 to 3 weeks by post. See Cost, Quantity and Lead Time.

What should I check before powering a new board?

Inspect the joints under magnification, measure the resistance across each supply rail to find shorts, and power it from a current-limited supply. See First Power-Up, Bring-up and Testing.

Where did the old PCB Prototyping sections go?

All of them are in this guide with much more depth: the routes, services, ordering, cost, file checks, assembly, home making, safety and troubleshooting each have pages of their own.

References

• IPC-2221B and IPC-6012 (board design and qualification); IPC-A-600 (acceptability of printed boards); IPC-7525 (stencil design); IPC-A-610 (assemblies).
• Fabricators’ published capabilities and guidelines (JLCPCB, PCBWay, OSH Park, Eurocircuits, Advanced Circuits).
• Coombs, C. F. (ed.), Printed Circuits Handbook, McGraw-Hill; Lee, N.-C., Reflow Soldering Processes and Troubleshooting, Newnes.
• Horowitz, P. and Hill, W., The Art of Electronics, Cambridge University Press (prototyping and construction).

Last reviewed: November 2026. Prices, lead times and capabilities change: check the services you use.