Prototype Machining
From first article to proof of concept — precision parts in days, not weeks.
Bringing a new design to life starts with getting the first part right. Promet's prototype machining service delivers single parts and low-volume runs with the same First-Time-Right precision we bring to full production — so what you test is exactly what you'll build.
Whether you're validating fit and function, preparing for a design review, or need a working sample for your next investor meeting, we work directly from your CAD files with fast quoting and no minimum order quantity.
1 to 2 week - Typical Prototype Turnaround
No Minimum Order Quantity
±0.0005" Tolerance, Even at Qty 1
5000+ Prototypes Delivered
Why prototype with Promet?
→ Single-part and low-volume runs, no MOQ
→ Direct CAD file review with manufacturability feedback before we cut
→ Same tolerances and inspection standards as our production work (±0.0005")
→ Fast quoting — most prototype quotes turned around same-day
→ Materials on hand: aluminum, stainless, steel, titanium, brass, engineering plastics
→ Seamless path from prototype to production run when you're ready to scale
What is prototype CNC machining?
Prototype CNC machining is the process of producing one or a small number of parts directly from a CAD file, used to test fit, function, or design before committing to full production. Unlike production runs, prototype machining is optimized for speed and flexibility rather than volume.
How long does a prototype typically take?
Most prototype orders at Promet are completed in 5 to 10 business days from design approval, depending on part complexity and material. Rush turnaround is available — call us directly for expedited scheduling.
Is there a minimum order quantity for prototypes?
No. We machine single parts as readily as production runs. There's no MOQ for prototype work.
What materials can you use for a prototype?
We machine prototypes in aluminum (6061, 7075, 2024), stainless steel (303, 304, 316), steel (1018, 4140, A36), titanium (Grade 2, Grade 5), brass, bronze, and engineering plastics — the same materials we use in full production, so your prototype behaves like the real part.
What tolerances can you hold on a prototype part?
The same tolerances as our production work — up to ±0.0005" — so results from prototype testing carry over accurately when you move to production.
Can you help with design for manufacturability (DFM)?
Yes. Every prototype order includes a design review where we flag manufacturability issues and suggest optimizations before machining begins, so you're not surprised by cost or feasibility issues later.
Can you take my prototype straight into production?
Yes — one of the main advantages of prototyping with Promet is a direct path to production. Because we use the same equipment, tolerances, and materials at every stage, there's no re-validation needed when you scale up.
Do you work with startups and one-off projects?
Yes. We regularly work with hardware startups and individual engineers on single-part and small-batch projects, in addition to our aerospace, medical, and automotive production clients.