Choosing a Route: Breadboard to Production
Every way of making a board compared on time, cost, quality and quantity, and how to choose.
Why there is more than one route
No single method is best. A breadboard is fastest for an idea; a milled board is fast for a simple circuit; a fabrication service gives the quality and the plated holes that real designs need. The skill is to use the cheapest route that answers the question you are asking, and to move up the ladder only when the circuit demands it.
The ladder: from idea to production
| Stage | Route | Question it answers |
|---|---|---|
| 1. Does the idea work? | Simulation, breadboard, development board (see Breadboards, Perfboard and Hand Wiring) | Is the circuit sound? Does the software run? |
| 2. Does it fit and survive? | Perfboard, milled board or etched board (see CNC Isolation Milling and Home Etching: Toner Transfer and Photoresist) | Is it small enough? Does it work off the bench? |
| 3. Is the layout right? | Fabricated prototype, a few boards (see Ordering from a Fabrication Service) | Does the real board work? What must change? |
| 4. Can it be built reliably? | Pre-production batch, assembled by a service (see Assembly: Stencils, Reflow and Assembly Services) | Yield, test, cost at volume |
| 5. Production | Contract manufacturer | Repeat orders, quality control |
For product ideas rather than boards, the same ladder applies to the whole device: see Prototyping Techniques.
What each route can make
| Feature | Breadboard / perfboard | Home etching | CNC milling | Fabrication service |
|---|---|---|---|---|
| Layers | n/a | 1 or 2 (alignment is hard) | 1 or 2 | 1 to 16 and more |
| Smallest track and gap | n/a | 0.3 mm (12 mil) | 0.25 mm (10 mil) | 0.127 mm (5 mil) standard |
| Plated through-holes | n/a | No (use wires or rivets) | No | Yes |
| Solder mask, silkscreen | n/a | No (varnish optional) | No | Yes |
| Finest part pitch | 2.54 mm (0.65 mm with adapters) | 1.27 mm | 0.65 mm | 0.3 mm and below |
| High-speed signals | Poor above 10 MHz | Fair | Fair | Controlled impedance available |
| Repeatable | No | Moderately | Yes | Yes |
Worked example: which route can make my parts?
- The gap between pads is the pitch minus the pad width. If the gap is smaller than the minimum space of the route, the route cannot make it.
- With minimum spaces of 0.30 mm (etching), 0.25 mm (milling) and 0.13 mm (service):
| Part | Gap between pads | Etching | Milling | Service |
|---|---|---|---|---|
| Through-hole, 2.54 mm | 0.84 mm | yes | yes | yes |
| SOIC, 1.27 mm | 0.67 mm | yes | yes | yes |
| TSSOP, 0.65 mm | 0.25 mm | no | yes | yes |
| QFP, 0.5 mm | 0.20 mm | no | no | yes |
| QFN / QFP, 0.4 mm | 0.18 mm | no | no | yes |
| BGA 0.8 mm | 0.40 mm | yes | yes | yes |
A 0.5 mm QFP has a 0.20 mm gap: only a service can make it (and the 0.4 mm part is only marginal even there without a mask dam; see Manufacturing Rules, Files and Design Review). Home methods are for through-hole and 1.27 mm parts, or for modules on adapter boards.
Cost and time, counted honestly
The price of a board is not only the fabrication fee: add your own time, the consumables and the wait. Using the illustrative model from Cost, Quantity and Lead Time (a 40 × 25 mm board, your time valued at $20 per hour, 2.5 h of work per etched board, 1.0 h per milled board and 0.4 h to prepare and place an order):
| Boards needed | Service (money + time) | Etching (money + time) | Milling (money + time) | Cheapest |
|---|---|---|---|---|
| 1 | $27 | $62 | $25 | milling |
| 5 | $28 | $270 | $110 | service |
| 20 | $29 | $1 050 | $428 | service |
Worked example: when does the service win?
- Counting money only, a service becomes cheaper than milling at about 14 boards: its set-up and shipping ($19) are paid once.
- Counting your time too, the service is cheaper from about 2 boards, because every extra home-made board costs an hour of work.
- But a service takes about 10 days to deliver, while a milled board is ready the same afternoon: when time-to-answer matters more than money, home methods win even for several boards.
- The model is illustrative: use your own prices and time.
How to decide
| If… | Then… |
|---|---|
| You are testing an idea and the circuit is slow and simple | Breadboard, or perfboard if it must survive handling |
| You need one simple board today and parts are through-hole or 1.27 mm | Mill or etch it |
| You need plated holes, a mask, two or more layers, or fine pitch | Order from a fabrication service |
| You will build five or more boards | Order from a service |
| The circuit has fast signals, RF or analog precision | Fabricated, with a ground plane (see Layer Stack-up and Impedance) |
| There are more than a few fine-pitch parts or BGAs | Assembly service (see Assembly: Stencils, Reflow and Assembly Services) |
| You are learning, and want to understand the process | Etch or mill one board, then order the rest |
Planning a prototype campaign
Plan on two or three board revisions before the design is right: each finds problems the last could not. The cheapest campaign orders the boards early, uses the wait to test the software on a development board, and orders the next revision as soon as the first board shows what is wrong.
Worked example: three spins by service
- Three revisions at about 10 days each is 30 days (about 4 weeks) and, at 20 dollars for five boards each, about $59 in total.
- If the first revision is a simple milled board, three spins take 3 days. Using a milled board for the early spins and a fabricated board only for the last one can halve the calendar time.
- Add margin: a respin often costs a month in all (see Cost, Quantity and Lead Time).
- Put a header on the first board for every unused pin, so that you can wire a fix without a new board.
- Add test points and jumpers, so that you can change a value or break a connection without a knife (see Manufacturing Rules, Files and Design Review).
- Keep a log of every problem found on each board, so that the next layout fixes all of them.
Troubleshooting
| Symptom | Likely cause | What to do |
|---|---|---|
| Circuit works on the breadboard, not on the board | Breadboard stray capacitance hid a problem, or a layout error | Check the schematic against the board; scope the signals |
| Home-made board has open or short tracks | Too fine for the process | Widen tracks and gaps to 0.3 mm or more; inspect with a lens |
| Ordered boards arrive late | Shipping or customs | Use express shipping; plan a month for the first order |
| Fine-pitch part will not fit the route | Gap smaller than the process minimum | Use a service, or an adapter board |
| Every revision finds new faults | Too many changes at once | Change one thing at a time; keep the log |
Related
- PCB Prototyping: the overview of this guide.
- Cost, Quantity and Lead Time: the arithmetic of cost and time.
- Ordering from a Fabrication Service: ordering step by step.
- Prototyping Techniques: the wider process.
FAQ
Should I breadboard first or go straight to a PCB?
Breadboard (or simulate) circuits with uncertain behavior and slow signals. Go straight to a board for fine-pitch parts, fast signals or a design copied from a proven reference.
Is it worth making a PCB at home?
For a single simple board or for learning, yes. For anything with plated holes, fine pitch or more than a few copies, a fabrication service is cheaper and better.
How many boards should I order?
At least five: the cost of the extra boards is small, and you will damage or modify one. Order ten if the price is nearly the same.
Can a CNC mill make a two-sided board?
Yes, with registration pins, but there are no plated holes: vias need rivets or wires. A service is easier for two layers.
How many revisions will my board need?
Plan for two or three. A first board that works unchanged is rare, even for experienced designers.
References
- Coombs, C. F. (ed.), Printed Circuits Handbook, McGraw-Hill.
- Fabricators’ capability pages (JLCPCB, PCBWay, OSH Park, Eurocircuits).
- Horowitz, P. and Hill, W., The Art of Electronics, Cambridge University Press (construction techniques).
Last reviewed: October 2026. The cost and time model is illustrative: use real quotes and your own rates.