Functional prototypes that you can actually test
A PLA prototype shows the shape. A functional prototype has to be bolted, loaded and used in the field. That is why we print your samples in the material closest to the later production part.
Samples in 2 to 4 working days
What functional prototypes are for
Tests a visual model cannot do.
Assembly test
Does the part fit its neighbours, can screws be set?
Load test
Does the design withstand the forces in service?
Field test
Use at a customer site or in the plant over weeks.
Compare variants
Print and test two or three geometries in parallel.
Suitable materials
Choose the material for the test, not for the price. Otherwise you end up testing the wrong material.
- PA12Tough, low-friction nylon for functional mechanical parts.
- PCPolycarbonate - high impact, high heat, transparent option.
- PETGTough, food-safe-capable everyday workhorse.
- PA12-CFCarbon-filled nylon 12 - the metal replacement workhorse.
- ASAThe outdoor specialist - ABS mechanics with true UV stability.
- TPUFlexible thermoplastic polyurethane - Shore 95A.
What we should know for a functional prototype
- 01Which test is planned and what it should show.
- 02Later production process, so the prototype is meaningful.
- 03Critical dimensions and fits.
- 04Number of samples and whether variants are wanted.
The most common prototype mistake
Many development projects test with the cheapest material and are surprised the production part behaves differently. A PLA clip breaks, a PA12 clip flexes. A PETG bracket creeps at 60 °C, a PC bracket does not. A test result is only as good as how close the sample is to production.
We therefore ask how the part will be made later. If it will be moulded, we choose a material with similar behaviour. If it stays a printed part, the prototype is also the first approval for the small series.
That turns a sample into a reliable basis for decisions rather than just a showpiece.
Manufacturing data at a glance
- Location
- Schleswig, Germany
- Part size
- up to approx. 250 x 250 x 250 mm, larger parts split and joined
- Quantities
- 1 to several thousand, no minimum order quantity
- Tolerances
- approx. ±0.2 mm for PLA, PETG and carbon grades, ±0.3 mm for ABS, ASA and PC
- Layer height
- 0.10 to 0.30 mm
- Materials
- 20 engineering filaments from PLA to PA12-CF and PC FR
- File formats
- STEP, STL, 3MF, OBJ, IGES up to 200 MB
- Lead time
- 2 to 4 working days for samples, 4 to 15 working days for series
Upload Your File for Instant Pricing
Receive fast pricing and manufacturing feedback in minutes. STEP, STL, 3MF and OBJ supported.
Functional prototype FAQ
- Is a printed prototype as strong as the moulded part?
- In plane often comparable, weaker between layers. We orient the part so the test load goes into the strong direction and tell you where the sample differs from the production part.
- How fast do I get a prototype?
- Simple parts in 2 to 4 working days, often faster. Variants are printed in parallel.
- What does a functional prototype cost?
- It depends on size, material and quantity. The instant quote shows the price right after upload.
- Do you review my design before printing?
- Yes. We check walls, overhangs and fits and get in touch if something would distort the test.
Read next
Using rapid prototyping properly: three rounds instead of ten
Most projects do not need ten prototype rounds. They need three, where each round answers one clear question.
3D Printing vs Injection Molding: Which One Should You Choose?
Injection molding wins at scale. 3D printing wins everywhere else. A practical comparison of the two processes and how to pick the right one.
Engineering Material Selection Guide for FDM 3D Printing
The best material is not the strongest one. It is the one that matches the environment, the mechanical requirements and the production goals of the part.