Rapid Prototyping Methods: How to Pick One, Costs and Lead Times
Compare rapid prototyping methods by the question each answers - fit, function, appearance or durability - with real costs and lead times.
February 13, 20222 min read
Written by Ralph Hill, Mechanical & electrical systems, 3D manufacturing
Prototyping Engineer
Published February 13, 2022Updated August 18, 2026
A prototype is a question you ask in physical form. The right rapid prototyping service depends entirely on which question you are asking - does it fit, does it work, does it look right, or will it survive a customer. Our Shreveport prototyping floor runs FDM, resin, powder-bed printing, CNC machining and short-run production under one roof so a design can move between methods without changing suppliers.
Which rapid prototyping method should you use?
Match the method to the decision. Fit checks and early form studies belong on FDM because the parts are cheap and you will print several revisions in a day. Anything with fine detail, clear windows or a cosmetic surface goes to resin. Functional parts that must snap, flex or take a load are best in SLS nylon. When the prototype has to behave like the production part in the production material, machine it or cast it.
Method | Typical tolerance | Materials | Lead time | Typical part cost |
|---|---|---|---|---|
FDM | +/-0.20-0.50 mm | PLA, ABS, PETG, ASA, nylon | 1-3 days | $20-$150 |
SLA / DLP resin | +/-0.05-0.15 mm | Rigid, tough, clear, high-temp resins | 1-3 days | $40-$300 |
SLS nylon | +/-0.10-0.30 mm | PA12, PA11, glass-filled nylon | 2-5 days | $60-$400 |
Cast urethane | +/-0.15-0.30 mm | Rubber-like and ABS-like urethanes | 7-12 days | $60-$250 per part, 15-50 parts |
CNC machining | +/-0.01-0.05 mm | Aluminum, steel, POM, PC, PEEK | 3-7 days | $150-$1,200 |
How much do rapid prototyping services cost?
Per-part pricing is only half the picture. A realistic prototyping budget covers CAD preparation, the build itself, finishing and the iteration you know is coming. Most hardware programs run three prototype rounds before design freeze, and each round is faster and more expensive than the last as the parts get closer to production intent.
Round | Purpose | Duration | Typical cost |
|---|---|---|---|
Round 1 - looks-like | Form, ergonomics, stakeholder review | 1-2 weeks | $1,500-$5,000 |
Round 2 - works-like | Mechanism, electronics integration, bench test | 2-4 weeks | $5,000-$18,000 |
Round 3 - production intent | Real materials, real process, user or field test | 4-6 weeks | $12,000-$45,000 |
How fast can you get a prototype?
- Same day to 3 days - printed fit checks and appearance models from clean CAD.
- 3-7 days - machined metal parts and multi-part printed assemblies with basic finishing.
- 1-2 weeks - assembled works-like prototypes with electronics, wiring and firmware loaded.
- 2-4 weeks - cast urethane or short-run bridge parts in production-like materials.
- Lead times start when the CAD is manufacturable, not when the purchase order arrives - unresolved wall thicknesses and missing tolerances are the most common delay.
Designing parts that prototype well
- Hold 1.5-2.0 mm nominal walls so printed and molded versions behave alike.
- Add draft early - a prototype that ignores draft hides the tooling problems you will pay for later.
- Design snap fits and living hinges in the material you intend to mold, not in whatever prints fastest.
- Split large parts at seams that will exist in production, not at the edge of the build volume.
- Model fastener bosses, ribs and clearances now; re-adding them after user testing restarts validation.
From prototype to short-run production
Our Shreveport facility was built so a program does not have to change hands between prototyping and first production. The same engineers who print round one run the bridge builds, the fixtures and the inspection plan, which means tolerances and assembly steps carry forward instead of being rediscovered by a new supplier. Related reading: our rapid prototyping service and injection molding cost and break-even.
Frequently asked questions
What are rapid prototyping services?
Rapid prototyping services turn CAD into physical parts in days using additive manufacturing, CNC machining and urethane casting, so a design can be evaluated for fit, function and appearance before tooling is committed.
How much does a prototype cost?
Individual printed or machined parts run roughly $20 to $1,200 depending on process and size. A complete prototype round for a small device - parts, assembly and finishing - typically costs $1,500 to $18,000, with production-intent rounds reaching $45,000.
How long does rapid prototyping take?
Printed parts ship in one to three days and machined parts in three to seven. A fully assembled working prototype with electronics usually takes one to two weeks from released CAD.
Send us your CAD and the decision you are trying to make. We will recommend the cheapest method that answers it and quote the build.
Request a quoteFrequently asked questions
Which rapid prototyping method should you use?
Match the method to the decision. Fit checks and early form studies belong on FDM because the parts are cheap and you will print several revisions in a day. Anything with fine detail, clear windows or a cosmetic surface goes to resin. Functional parts that must snap, flex or take a load are best in SLS nylon. When the prototype has to behave like the production part in the production material, machine it or cast it.
How much do rapid prototyping services cost?
Per-part pricing is only half the picture. A realistic prototyping budget covers CAD preparation, the build itself, finishing and the iteration you know is coming. Most hardware programs run three prototype rounds before design freeze, and each round is faster and more expensive than the last as the parts get closer to production intent.
How fast can you get a prototype?
Same day to 3 days - printed fit checks and appearance models from clean CAD.. 3-7 days - machined metal parts and multi-part printed assemblies with basic finishing.. 1-2 weeks - assembled works-like prototypes with electronics, wiring and firmware loaded.. 2-4 weeks - cast urethane or short-run bridge parts in production-like materials.. Lead times start when the CAD is manufacturable, not when the purchase order arrives - unresolved wall thicknesses and missing tolerances are the most common delay.
What are rapid prototyping services?
Rapid prototyping services turn CAD into physical parts in days using additive manufacturing, CNC machining and urethane casting, so a design can be evaluated for fit, function and appearance before tooling is committed.
How much does a prototype cost?
Individual printed or machined parts run roughly $20 to $1,200 depending on process and size. A complete prototype round for a small device - parts, assembly and finishing - typically costs $1,500 to $18,000, with production-intent rounds reaching $45,000.
How long does rapid prototyping take?
Printed parts ship in one to three days and machined parts in three to seven. A fully assembled working prototype with electronics usually takes one to two weeks from released CAD.
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