Rapid Prototyping with 3D Printing
Turn your CAD design into a physical prototype in days — not weeks. Test form, fit, and function with real parts you can hold, assemble, and iterate on without tooling costs or minimum orders.
Why Prototype with 3D Printing?
Traditional prototyping methods — CNC machining, injection mold samples, hand-built models — take weeks and cost thousands. 3D printing changes the equation.
Speed
Days, not weeks
Upload today, receive a physical part in 3–5 business days. Rush options available for 1–2 day turnaround.
Cost
No tooling fees
No mold costs, no setup fees, no minimum orders. Pay only for the material and print time of your specific part.
Iteration
Fail fast, fix fast
Found a design flaw? Revise the CAD file, re-upload, and have a new prototype in days. Go through 5 iterations in the time it takes to get one CNC part.
Tangibility
Hold it in your hand
Screen renderings lie. A physical prototype reveals ergonomic issues, assembly problems, and design oversights that no CAD model can show you.
Prototyping Workflow
From CAD file to physical part — here's how the process works.
Design
Create your 3D model in any CAD software — Fusion 360, SolidWorks, Onshape, Blender, or FreeCAD. Export as STL or 3MF.
Upload
Drop your file into our quote builder. We automatically check the model for printability — watertightness, wall thickness, and manifold integrity.
Quote
Choose your material, layer height, and infill. The price is calculated from actual slicing data — you see the exact cost before ordering.
We review orientation and supports, then print on Bambu Lab printers with quality control. Most prints complete within 24–48 hours.
Iterate
Test your prototype. Found an issue? Revise the design, upload the new file, and reprint. No tooling changes, no setup fees — just upload and go.
Material Comparison for Prototyping
Different prototyping stages need different materials. Start cheap with PLA for concept validation, move to PETG or ABS for functional testing.
| Material | Cost | Print Speed | Surface | Strength | Best For |
|---|---|---|---|---|---|
| PLA | Lowest | Fastest | Good | Moderate | Form checks, visual models, early concepts |
| PETG | Moderate | Fast | Good | High | Functional testing, mechanical fit checks |
| ABS | Moderate | Moderate | Smoothable | High | Heat testing, near-production prototypes |
| TPU | Higher | Slower | Matte | Flexible | Gaskets, seals, grip testing, wearables |
PLA
- Cost
- Lowest
- Speed
- Fastest
- Surface
- Good
- Strength
- Moderate
Best for: Form checks, visual models, early concepts
PETG
- Cost
- Moderate
- Speed
- Fast
- Surface
- Good
- Strength
- High
Best for: Functional testing, mechanical fit checks
ABS
- Cost
- Moderate
- Speed
- Moderate
- Surface
- Smoothable
- Strength
- High
Best for: Heat testing, near-production prototypes
TPU
- Cost
- Higher
- Speed
- Slower
- Surface
- Matte
- Strength
- Flexible
Best for: Gaskets, seals, grip testing, wearables
Design Tips for Better Prototypes
A few design adjustments can save you iterations and money. These guidelines apply specifically to FDM (fused deposition modeling) printing.
Minimum Wall Thickness
Keep walls at least 1.2 mm thick (3 nozzle widths at 0.4 mm). Thinner walls may not print reliably or will be fragile. For structural parts, 2.0 mm minimum is recommended.
Overhangs & Supports
FDM can print overhangs up to ~45° without support material. Steeper overhangs need supports, which add cost, print time, and leave surface marks where they attach. Design with 45° chamfers instead of 90° overhangs where possible.
Print Orientation
Parts are strongest in the X/Y plane and weakest between layers (Z axis). Orient your model so the primary load direction is parallel to layers. We optimize orientation for you, but it helps to know the intended stress direction upfront.
Snap Fits & Press Fits
Design snap-fit cantilevers with 0.3 mm clearance and a gradual deflection angle. For press fits, allow 0.1–0.15 mm interference. Always test with a prototype — FDM tolerances mean press fits may need 1–2 iterations to dial in.
Holes & Threads
Holes print undersized by about 0.1–0.2 mm due to the nozzle path. Design holes 0.2 mm larger than needed, or plan to drill them out. For threads, use heat-set inserts (M3–M6) instead of printed threads for strong, repeatable connections.
Draft Angles
Unlike injection molding, 3D printing doesn't require draft angles — there's no mold to pull from. If you're designing a part that will eventually be injection molded, include drafts in the CAD model, but know they won't affect printability.
From Prototype to Production
3D printing isn't just for prototyping — it fits into a larger product development cycle. Here's how the stages typically flow.
Concept Prototype
Validate the shape, proportions, and basic ergonomics of your design. Cheap and fast — expect to print several variants.
Functional Prototype
Test mechanical fit, assembly, thermal performance, and drop resistance. Use engineering materials that approximate the final product's properties.
Pre-Production / Bridge
Produce small batches for user testing, trade shows, or early sales while injection mold tooling is being manufactured. Volume discounts apply.
Production
Once the design is locked, injection molding is more cost-effective at volume. Your 3D-printed prototypes serve as the reference for the mold design.
Start Prototyping Today
Upload your STL or 3MF file and get an instant quote. No minimums, no tooling — just fast, affordable prototyping shipped from California.
Upload Your Prototype