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Prototyping for Compost

Prototyping For Compost

“I can tell that quality is interwoven into everything Fathom does, it’s really amazing to see and experience. Major props.”

— Kristen Hess, Co-Founder at CompoKeeper, LLC

CompoKeeper LLC, founded on the premise of making in-home composting simpler and cleaner, created the CompoKeeper, an innovative compost bin that features a proprietary clamp within the bin to hold a liner in place.


The clamping mechanism automatically seals custom compostable bags (ASTM D6400 certified), locking odors in and fruit flies out. CompoKeeper’s marketing team came to Fathom in need of a functional prototype with quick turnaround. Since the model would be used for a promotional event, it was critical it looked and functioned like the finished product.

To expedite the project, Fathom utilized GrabCAD for file sharing and updates. The design was divided into sections, CNC machined out of ABS plastic and painted to match specified Pantone colors.

All components were assembled and tested for fit accuracy. This complex assembly was completed within a week.

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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. 

3D Printing / Additive Manufacturing
90+ Machines  
SLS / / Two-day  SLA / / Next-day 
FDM / / Next-day DMLS / / Three-day 
PolyJet / / Same-day MJF / / Two-day
Injection Molding

30 Second Quotes

Prototype Tool / / As soon as 10 days

10K Parts / / 10 days

Production Tool / / As soon as 3 weeks

CNC Machining

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

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

Urethane Casting

Injection Molding Adjacent
without High Costs of Metal Tools

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

Let’s get started.

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