The engineer behind every project.
I’m Zach Bull. I design outdoor hardgoods and van interiors, and carry them from the first sketch to manufacturer-ready files — one engineer, involved the whole way.
Where the last decade went.
Design engineering, then building the thing — in that order, and often at the same time.
Exhale Engineering
Founder, product design engineerFractional product design and engineering for outdoor brands — sheet metal, aluminum extrusion, injection molding, and CNC, from concept through manufacturer-ready files. Clients include Arkto Campers, VanEssential, Velocity Saunas, and Inside Out Vans.
Satsang Vanworks
Design and fabricationFully custom luxury van conversions. Floorplans and interior design, CNC operation, woodworking, and installation — designing the parts, then building and fitting them myself.
Studio Shed
Designer and project managerBackyard accessory dwelling units. Worked directly with clients and their city building departments to permit and customize each unit, in 2D CAD and 3D modeling.
University of Colorado Boulder
Integrated Design EngineeringArchitecture and product design.
“Zach played an important role in developing our camper concept — working through the practical and technical challenges while also thinking along on the overall concept. He combines hands-on, practical experience with strong 3D and engineering skills, and he’s simply a good guy to work with.”
The person you talk to is the person doing the work.
I started Exhale Engineering in 2023, in the foothills of Colorado — on the belief that a good idea should be able to move from your head into the real world, as easily as an exhale.
I work best embedded: one engineer, involved every step, from the first 3D render through prototypes and manufacturing support. You stay in the loop the whole way, and nothing gets handed off to someone you have never met.
Living out here pushed me toward a simpler life — my wife and I live in a tiny home I designed and built from reclaimed materials. That is the same instinct I bring to client work: design useful, often modular products that make time outside more approachable, and make them genuinely manufacturable rather than just pretty in a render.
“A simpler life starts with getting outside. The rest naturally follows.”
Years of building what I design.
Vans, campers, trailers, tiny homes — designed, then actually built. Knowing how a part goes together on the bench is what keeps a design honest by the time it reaches a shop.
Grounded in collaboration, from concept to production.
Involved every step
You're in the loop from the first sketch to the final drawing — no black-box handoffs.
Built for the outdoors
Products designed to look right and hold up in the field, not just on a screen.
Through to the shop floor
Renders, prototypes, and manufacturing support until it's something a shop can actually make.
