Engineering Design and Fabrication

Our design approach saves you time and money by integrating design and engineering analysis

Highest value: Our goal is a quick product development cycle with the least number of prototype iterations

Engineering Design Services

Product development engineering
Engineering part design, assembly design, system design, machine design, CAD modeling, fabrication drawings
Prototypes or design for high volume manufacturing
Design of machined, welded, brazed, bonded, fastened, extruded, sheet metal and injection molded components
Heat transfer equipment including cold plates and heat exchangers, manufacturing stations, industrial automation
Coordination and partnerships with electrical engineering firms for design of printed circuit boards, cables, human-machine interfaces and complete electro-mechanical systems

Engineered Systems Fabrication and Testing

Part procurement and inspection through strategic relationships with machine and fabrication shops
Subsystem and component assembly
Part, assembly, and system acceptance and characterization testing
Design of test fixtures for simple and quick manufacturing tests or high-precision / high-value instruments. We have designed test fixtures capable of repeatably measuring to 0.0002 inches.

Mechanical Engineering Analysis Services

Structural analysis, stress analysis, structural Finite Element Analysis (FEA)
Thermal analysis, thermal FEA, Conduction analysis, convection analysis
Computational Fluid Dynamics (CFD), Fluid flow and pressure drop modeling
Thermal performance modeling, system modeling
Electronics cooling and thermal management. Single phase cold plate design, Two-phase cold plate design, heat exchanger design,

Project Management and Project Engineering

Project management and coordination of technical team including mechanical and electrical engineers, drafters and technicians.
Project schedule and budget implementation and maintenance. Proper project management ensures projects are completed on time and on budget.

Spokane Engineering

Product development DesigN and Fabrication

Johnston engineering is the region’s best product development engineering company. We design your product, device or system and numerically simulate how it will perform before parts are ever manufactured. Integrating design and analysis ensures the quickest product development cycle and least number of prototype iterations which saves our customers time and money. We fabricate and deliver your product in a timely manner and at a competitive price.

We serve a broad range of clients in the biomedical, renewable energy, consumer product, pumped fluid systems, HVAC, thermal management, manufacturing, food handling equipment, firearms and energy storage fields.

We handle all phases of the design cycle from concept to finished product. We will manage your project design, schedule, budget, fabrication and test. We partner with local electrical engineers for circuit board design and software development for integrated electrical-mechanical devices.

Our core analysis competencies include system engineering of fluid flow systems, thermodynamics, heat transfer, and component and assembly structural analysis using the latest Finite Element Analysis and Computational Fluid Dynamics design packages.

Recent Engineering Projects

Process development test fixture

Project Overview: We recently designed and delivered a manufacturing process development test fixture. This fixture allows our customer to validate a new time, temperature and pressure dependent proce…

Stop Box

The StopBox® is a portable instant-access handgun retention device that does not use batteries, electronics or external keys. The StopBox® hand gesture code lock is instinctive to use in the dark an…

Dew Point

Johnston Engineering has had the privilege to work with Dew Point Manufacturing. What we did: Johnston Engineering provided system level design and analysis to take this project from concept to realit…