01
Manufacturing
CNC machining in a wide range of materials, with custom fixturing, finishing, and the paperwork your PO asks for.
Details →Engineer-owned and operated · Sellersville, PA
Your part, engineered and machined by the person you talk to.
Prototypes to low-volume production in a wide range of materials, most commonly Grade 5 titanium, aluminum, and stainless steel. Plus design, analysis, simulation, and consulting, even when there’s no part to make. Send a drawing, a sketch, or just the problem. The engineer reads it, asks the right questions, and quotes it.
What we do
Four ways to work with us
One shop, one engineer, one quote form. Pick the closest fit; most jobs use more than one.
02
Product Design & Development
Concept to production for all kinds of products, including tools, knives, and EDC gear. Start from a sketch or full CAD.
Details →
03
Engineering Services
Mechanism, structural, and thermal design, CAD/CAM/FEA, simulation, and tolerance analysis.
Details →
04
Engineering & Process Consulting
Machinist training, fixturing and tooling, feeds and speeds, DFM reviews, material selection, and cost and schedule.
Details →
Who you work with
You work directly with the engineer.
No account managers and no hand-offs. The person who reviews your drawing is the person who programs the toolpath and checks the part.
Michael MackinFounder
B.S. Mechanical EngineeringCarnegie Mellon University, 2012
Since 2012
How a job runs
Bring a finished drawing, a rough sketch, or just an idea.
- Reach out and we’ll let you know what we need to give you a price, then work with you to move the project forward.
- NDA first if you want one. Your design stays your property.
- The engineer reads the drawing and sends DFM questions before pricing, so the quote matches the part you actually need.
- Submit a request and you’ll hear back within two business days.
- Material Certifications and Certificates of Conformance with the order when your PO calls for them.
Proof, not adjectives
Suggested, modified, or specified — every requirement gets held.
Not sure what your tolerances and requirements should be? We’ll help you figure that out. Bring an idea, a sketch, or a rough design. You don’t need to know how tolerancing works, what surface finish to call out, or whether something needs a slip fit or a press fit. Tell us what the part needs to do, and we’ll work out how to make it do that, so you get what it needs without paying for precision it doesn’t. If you already have specific requirements, we’ll hold to every one. Either way, we’ll get you to the finish line.
Our own products
SE Products: designed, machined, and sold by the same engineer.
Our retail line is the portfolio. Every one of these went from idea to CAD to production in this shop.
Utilizer
Replaceable-blade EDC utility knife, titanium or other scales.
View in store →
HookUp Nano, Micro, Milli
One-piece Grade 5 titanium carabiners in three sizes.
View in store →
C33
Slim carabiner with a flush, modular titanium gate and bottle opener.
View in store →
The Rook
Compact key dangler and multitool that hooks to a belt loop.
View in store →Also in the store: Alchemist and Cartographer titanium frame-lock folders, the C238 titanium carabiner multitool, and the Utilizer Compact. Visit the web store →
What customers say
Testimonials
“Having collaborated with Mike for more than seven years, I have come to rely on his exceptional service and work. He delivers high-quality, consistent production machining, clear and reliable communication at every stage, and dependable turnaround.”
— Jason Santucci, Program Manager, Triple Aught Design
“I have worked with Spectrum Energetics and Mike Mackin on numerous projects. Working with Mike is a pleasure and I've always been happy with the process.”
— Rick (Gish Tools)
Send the drawing. Get a straight answer.
Send a drawing, a sketch, or just a description. The engineer who will make the part reads it first and comes back with questions or a quote.