Boston, MA · Est. 2026

Engineeringthatsurvivescontactwiththefloor.

We deliver precision-drafted CAD, tolerance stacks, and production-ready documentation for defense contractors, startups, and hardware teams — done right the first time.

Technical Capabilities · SERVICE STACK
01Precision Drafting & GD&T02DFMA-Driven Optimization03Rapid Functional Prototyping04SBIR/STTR TDP Development05Design to Delivery
What we do

Five capabilities. One team.

From first sketch to production floor — we own the technical transition so you don't have to.

01

Precision Drafting & GD&T

Parameter-driven 3D models & drawings designed for mechanical performance.

02

DFMA-Driven Optimization

Tolerance stacks, draft analysis, and supplier-ready packets for contract manufacturers.

03

Rapid Functional Prototyping

In-house additive manufacturing for fit-checks and assembly jigs before committing to metal.

04

SBIR/STTR TDP Development

ASME Y14.5 compliant drawings and full BOMs that meet rigorous defense standards.

05

Design to Delivery

Expert liaison to local CNC partners from documentation through final quality control.

Selected work

Projects we can talk about.

View all
NDA PROJECTS
01 — Linear Actuator Tooling
02 — Test Fixture for Acoustic Testing
03 — Anti-Jamming GPS Bracketry
04 — Autonomous Underwater Vehicle
05 — Additive Manufactured Radar Horn
Modular Laser Scanning System
Research & Development · 2024
Modular Laser Scanning System
Collapsible Bicycle Helmet
Research & Development · 2023
Collapsible Bicycle Helmet
By the numbers

Built on a record of delivery.

0+
Technical packages delivered to U.S. Government and manufacturing floor.
0+
Designs successfully 3D printed, machined and held in hand.
Tier-1
Expertise
Defense-sector IRAD and production engineering experience at prime contractors.
0+ hrs
Spent inside CAD on design, drafting, and technical standards review.
Process

How a program moves with us.

STEP 01

Brief & Scope

You send us the brief. A senior engineer reads it and responds with a scoped quote or a question we need answered first.

STEP 02

Design & Tolerancing

We model, draw, and tolerance-stack the design. Every feature is defensible on the floor.

STEP 03

Prototype & Verify

We print, fit-check, and iterate before committing to metal. Real parts, real assembly, real answers.

STEP 04

Documentation & Delivery

Full TDP — drawings, BOM, supplier notes — handed off in whatever format your manufacturer needs.

“A drawing is a contract. If we can't defend every tolerance on the factory floor, we don't sign it.”
RR
Robert Recalde· Founder & Lead Engineer, Hardline Design

Have a design that needs a second set of eyes?