Custom Parts That Don't Exist
We design and 3D print industrial-grade plastic parts.Whether you need something custom that doesn't exist, a small batch of parts, or a replacement for OEM parts that no longer exist. We can make it happen.Free consultation included
What We Solve
Custom Parts
Consulting, engineering and manufacturing advice for custom parts that fit any project. Ask us now how we can help.
Discontinued OEM
Replacement parts for discontinued or out of stock parts. Reach out to see if we can help.
Complex Geometries
Some geometries are impractical to manufacture with traditional means. Contact us and see if we can make it happen.
Low Volume Batches
Injection molding require large capital investment and quantities. We offer small batch production. Send us an inquiry and see what we can do for you.
A simple process, start to finish
1. Send us the Problem
Send us the file or describe the part you need. Photos, sketches and drawings welcome. We accept everything from finished CAD files to written descriptions.
2. Feasibility and Quote
We review your information and provide a quote with feedback. Free expert advice comes standard with all our services. In-house engineering services available.
3. Design and Production
Final design and production. You are updated every step of the way.
4. Inspection and Delivery
Each part is checked against spec before shipping. You get the final component, ready for use and on time.
CASE STUDY: Filter Housing
A part that couldn't be bought off the shelf or economically tooled - produced as a single piece, on demand
The Challenge
A client needed a custom filter housing for a furnace application. This part holds a filter in place within the airflow system. The geometry was demanding: a large, open spanning section across the top that had to stay flat and dimensionally accurate to seal correctly. The thin walls added to the challenge by giving little structural support during the printing of the span. Parts like this are difficult to produce by conventional methods at low volume, and the large unsupported span at the top made it challenging to manufacture even with 3D printing. Most approaches to this would include splitting this part into sections and gluing/assembling the sections afterwards.The Approach
Producing it as a single piece meant solving several manufacturing problems at once, the main one being supporting the large open slot.PLA was used as the support material due to its poor adhesion to PETG. This introduced the challenge of keeping the PLA adhered enough to the PETG to remain rigid during printing, but weak enough to be easily removed without affecting surface finish.It is common to print supports using the same material as the part. In this application, such supports would be difficult to remove and would ruin the surface finish of the slot, potentially causing damage to the filter upon insertion and ruining the seal.Mixing materials also introduced warping risk on the large open span, which would have compromised the critical top surface. To control it, sacrificial PETG hold-down towers were added at the open corners to keep the PLA support flat as the materials cooled at different rates and risked separation at the interface. Print speeds and behaviors were heavily modified to facilitate adhesion at the interfaces, and especially when printing the PETG on top of the PLA, which required slow, high-pressure flow to remain stable.The Result
A single-piece filter housing, produced to spec, with a clean finish and tight tolerances. No tooling, no minimum order, delivered ready to install. A part that was impractical to source conventionally, made on demand.
Why choose us?
1 The Hard Jobs
Low volume, complex geometry, discontinued parts.
✓ Geometry that can't be molded
✓ Discontinued OEM
✓ One-offs welcome
2 Engineering, Not Just Printing
Every part gets design review, material selection, and problem-solving before it's made.
✓ Design reviewed and improved
✓ Manufacturing problems solved in-house
✓ Direct line to the engineer on your project
3 No Tooling
On-demand parts, none of the overhead.✓ No tooling cost
✓ No minimum order
✓ Simple and fast communication
Tell us about your project
Not sure what material to use?
Here is a rough guide;► PETG - Tough, weather and chemical resistant. The workhorse for functional industrial parts
► PLA, PLA+ - Rigid and dimensionally precise. Best for prototypes, fit-checks, and non-structural parts where strength and heat aren't concerns.
► ABS / ASA - Durable and heat-tolerant, with good machinability. ASA adds UV stability for parts that live outdoors. Common for enclosures and automotive-style components.
► Nylon / CF-Nylon - High strength and wear resistance. Best for moving parts, gears, brackets, and components that take repeated stress. Carbon-fiber blend for rigidity under load.
► PC - High heat resistance and impact strength. For parts near heat sources or under mechanical stress where lesser plastics would soften or crack.
►TPU - Rubber-like and abrasion-resistant. For seals, gaskets, bushings, vibration dampers, and any part that needs to flex without breaking.
© 2026 3E Innovation Inc.
All rights reserved.
Contact info
Email: [email protected]
Phone: Toll Free (888) 330-8311