Fathom is hiring for multiple positions across our 11 nationwide sites! To see all open positions, click here.

logo fathom

2019 City of Oakland PolyJet

PolyJet Project / / 3D Printed Models for Oakland’s Mayor


3D Printed Models For Oakland’s Mayor

Symbol of Oakland’s Innovative Spirit, Mayor Libby Schaaf Presented PolyJet Models To Oakland’s Sister Cities In China During A Trip To Promote Exchanges In Education, Technology & Culture

Industrial Designer Ava DeCapri on Fathom’s Engineering & Design Team brought these models to life for Oakland’s Mayor by utilizing a PolyJet-based 3D printer (Stratasys J750) at its production center located in the Jack London Neighborhood. Designed in the spirit of Oakland’s rapid growth in technology and its history as a progressive city, DeCapri also chose to highlight its iconic Oak tree logo. These gifts represent the creativity and diversity that the Oakland community cherishes.

The Project // 10 Custom, 3D Printed Gifts

Featured Method Used // Advanced Slicer

Featured Software Used // Autodesk Fusion 360

Additive Technology Used // PolyJet (Multi-Material & Full-Color)

Fathom Teams // Engineering/Design + Production

Fathom Designer // Ava DeCapri, Industrial Designer


The Part // Fathom’s Engineering & Design Team created custom gifts for the Oakland Mayor’s visit to its ten sister cities in China. The gifts featured the City of Oakland tree logo and the artwork is overlaid on a map of the city. PolyJet was used for this project because of the technology’s speed, multi-material capabilities and accuracy.

The Process / / Fathom experts worked with the mayor’s team to come up with a theme that best suited the engagement. Once the concept was selected, a simplified vector version of the Oakland map and logo was created which could be extruded in 2.5D CAD. The map had to be scaled to size to maintain detail quality for the 3D printing process (the final design was 3D printed in a UV-cured resin with a resolution of .25mm). Once vector files were appropriately sized, CAD files were created quickly using Autodesk Fusion 360. One thing to be mindful of while creating this part was to keep the thickness of the model under 1.5in because the clear PolyJet material can appear hazy with greater thicknesses. Files were processed using GrabCAD Print and 3D printed on one build tray. Once the 3D printing was complete, light sanding was required, followed by a clear coat of gloss paint to give the gift a truly high-quality finish.

Design Guidelines // Fathom’s application and engineering team created this easy-to-use guideline for 3D printing and additive manufacturing technologies—get answers for commonly asked questions specific to designing for PolyJet, SLA, FDM, MJF and SLS. Information includes wall thickness, hole diameter, clearance for assemblies, escape holes, minimum detail, pin diameter, accuracy and standard layer thickness.

Did you know Fathom’s application engineering team offers a course on how to design for additive manufacturing? Check out the Fathom calendar of events for upcoming sessions.

For more information about Fathom’s engineers and designers who can be contracted to support your in-house design teams product development, click thru to read about their expertise and view available services.

Learn more about Fathom’s engineering & design help—start a conversation today!

Comprehensive Capabilities for Rapid Manufacturing

At Fathom we offer a unique advantage of speed and agility-our experts help companies go from concept to prototype to manufacturing in ways not previously possible. 

90+ Machines  
SLS / / Two-day  SLA / / Next-day 
FDM / / Next-day DMLS / / Three-day 
PolyJet / / Same-day MJF / / Two-day

Get A Quote

30 Second Quotes
Prototype Tool / / As soon as 10 days
10K Parts / / 10 days
Production Tool / / As soon as 3 weeks

Get A Quote

3 & 5 Axis Milling & Turning
(Plastics, Composites and Metals)

Tolerance Accuracy Range
from +/-0.001″ to 0.005″

Get A Quote

Injection Molding Adjacent
without High Costs of Metal Tools

Most Commonly Used for High-Volume
Prototyping & Bridge to Production

Get A Quote

Finishing, Production Painting and Color Matching

Assembling, Including Embedded Electronic
Components, Threaded Inserts, and More

Get A Quote

CAD, DFAM and DFM Services

Apply Methods to Increase Speed
and Decrease Total Cost

Get A Quote

Highly Trained Staff / / Full-Time & Part-Time
Support as Short-Term & Long-Term Strategy

Decrease Downtime with Customizable
Staffing Accelerates Implementation

Get A Quote

Let’s get started.

Fathom is driven by advanced technologies and methods that enhance and accelerate today’s product development and production processes.


Across National
Time Zones

Precision manufacturing
from coast to coast.

1050 Walnut Ridge Drive
Hartland, WI 53029

444 W. 21st St. Ste. 101
Tempe, AZ 85282

46758 Lakeview Blvd
Fremont, CA 94538

7770 Washington St.
Denver, CO 80229

14000 N.W. 58th Court
Miami Lakes, FL 33014

1207 Adams Drive
McHenry, IL 60051

1401 Brummel Ave
Elk Grove, IL 60007

13758 Johnson Street NE
Ham Lake, MN 55304

1920 Slaterville Rd.
Ithaca, NY 14850

401 W. Shore Blvd.
Newark, NY 14513

1513 Sam Bass Rd.
Round Rock, TX 78660

fathom yellow color logo