Suburban Machine Inc.

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Suburban Machine Inc. High-quality manufacturing of syntactic materials for aerospace and naval applications. Your satisfaction is our #1 priority! Owner Bruce St.

Our wide range of capabilities and flexibility, combined with our team of talented professionals, allows Suburban Machine to offer only the best. With the combination of late-model manual machines and up-to-date CNC machining centers, we can accommodate quantities from prototype to production runs. We have the capabilities to custom-build a product to meet your specific requirements. Hilaire is a class A all-around manual machinist who has applied his techniques to multi-axis CAD/CAM programs to achieve excellent quality work at any level, from prototype to production. With over 25 years in business we have seen it all, so no mater what your project requirements, we have the ability to assist your design team to help solve almost any situation.

Light Block Concept — Buoyant Syntactic, Molded to SizeAnyone who’s worked with syntactic foam knows the usual headache:...
05/02/2026

Light Block Concept — Buoyant Syntactic, Molded to Size
Anyone who’s worked with syntactic foam knows the usual headache:
it comes in huge, expensive blocks, and shaping it into anything useful means a lot of machining and a lot of waste.

We manufacture buoyant syntactic foam and mold parts close to final size, then only finish‑machine what’s needed. That makes small add‑ons, custom shapes, and bolt‑on modules practical without buying oversized stock.

This “light block” is a simple example — a molded syntactic module that can be left as a blank, drilled with any hole pattern, or finished into a light bar.

Lift Version
This block is ~116 in³ in BC24 syntactic, giving:

Displaced water: ~4.3 lb

Foam weight: ~1.6 lb

Net lift: ~2.7 lb positive

Enough to offset lighting hardware and help trim small ROVs without touching the main buoyancy system.

The ROV images shown are generated mockups to visualize how a universal module might sit on different platforms.
We’re exploring bright, relevant ideas for molded syntactic accessories — light modules, sensor pods, buoyant rails, and more.

If you’ve got thoughts on lift targets or shapes you’d want molded instead of machined, we’re listening.

We've been working on mine-clearing drones for years! Where are they?
04/13/2026

We've been working on mine-clearing drones for years! Where are they?

These unmanned mine‑clearing systems rely heavily on advanced acoustics and shock‑tolerant materials. I’ve been involved in the SADM side of that world — not for buoyancy, but for the acoustic and structural components that keep sonar clean and stable in harsh environments.

These unmanned mine‑clearing systems rely heavily on advanced acoustics and shock‑tolerant materials. I’ve been involved...
04/13/2026

These unmanned mine‑clearing systems rely heavily on advanced acoustics and shock‑tolerant materials. I’ve been involved in the SADM side of that world — not for buoyancy, but for the acoustic and structural components that keep sonar clean and stable in harsh environments.

I worked on the Orian project and made these battery housings for NASA
04/13/2026

I worked on the Orian project and made these battery housings for NASA

Lithium‑ion battery failures behave the same in space, underwater, and inside sealed drones.
A cell doesn’t need oxygen to burn — it carries its own oxidizer — so a thermal‑runaway event becomes a problem of heat, pressure, gas expansion, and cascading failure.
During NASA’s Orion battery‑safety work, I machined syntactic‑foam isolation components used in their thermal‑runaway testing. NASA’s data showed that the syntactic liner kept surrounding cells far below critical temperatures, even when a trigger cell was pushed into full runaway. That insulation layer slowed heat transfer and prevented the event from jumping across the pack.
The same physics applies directly to modern ROVs, AUVs, and drones as energy density keeps climbing. Sealed housings, higher discharge rates, and compact packs make real thermal isolation more important than ever.
I just found the public NASA article again — it’s never been posted anywhere on my page — so I’m sharing it now for anyone who wants to dig deeper. The same materials and design logic that protect astronauts can protect our vehicles too.
Submach.com

Lithium‑ion battery failures behave the same in space, underwater, and inside sealed drones. A cell doesn’t need oxygen ...
04/13/2026

Lithium‑ion battery failures behave the same in space, underwater, and inside sealed drones.
A cell doesn’t need oxygen to burn — it carries its own oxidizer — so a thermal‑runaway event becomes a problem of heat, pressure, gas expansion, and cascading failure.
During NASA’s Orion battery‑safety work, I machined syntactic‑foam isolation components used in their thermal‑runaway testing. NASA’s data showed that the syntactic liner kept surrounding cells far below critical temperatures, even when a trigger cell was pushed into full runaway. That insulation layer slowed heat transfer and prevented the event from jumping across the pack.
The same physics applies directly to modern ROVs, AUVs, and drones as energy density keeps climbing. Sealed housings, higher discharge rates, and compact packs make real thermal isolation more important than ever.
I just found the public NASA article again — it’s never been posted anywhere on my page — so I’m sharing it now for anyone who wants to dig deeper. The same materials and design logic that protect astronauts can protect our vehicles too.
Submach.com

Address

69 Broadway Street
Westford
01886

Opening Hours

Monday 7am - 3:30pm
Tuesday 7am - 3:30pm
Wednesday 7am - 3:30pm
Thursday 7am - 3:30pm
Friday 7am - 3:30pm

Telephone

978.392.9100

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