3, 4, & 5-axis CNC milling — for parts that can't be wrong.
From prototype singletons to 50,000-piece production runs. ±.0002" repeatable across 200+ stocked material grades. AS9100D + ITAR. Engineer review on every quote, AI-assisted scheduling, real-time job costing while the chips are still flying — all running on K+G Ai ERP, the machine shop ERP we built for ourselves.
From single-feature prototypes to multi-setup production parts.
We pick 3-, 4-, or 5-axis on geometry and economics — never on what's convenient. A simple 2-op aluminum bracket belongs on a 3-axis center. A turbine housing with compound 5-sided geometry belongs on a simultaneous 5-axis trunnion. K+G Ai ERP's AI estimator routes each part to the right machine class automatically, then a real engineer signs off.
3-axis milling
Latest-generation vertical machining centers, envelopes up to 50" × 26" × 25". The bread-and-butter for brackets, plates, housings, and manifolds. Fixturing is the lever here — tight repeat-fixturing on production parts holds features to ±.0005" pass after pass.
4-axis milling
Trunnion or rotary-table 4th-axis. Cuts setups in half for parts that need access on 3–4 sides. The right call for shaft features, indexed hole patterns, and family-of-parts production where the part rotates between ops.
5-axis milling
Simultaneous 5-axis on aerospace work — turbine housings, structural brackets with compound mounting features, medical instrument geometry. Done in one setup. No multi-fixture stack-up error. AS9100D-controlled.
If it's machinable, we run it.
Material selection drives feeds, speeds, tooling, and fixturing. Pick the page that matches your part — each links back to milling so the request lands routed.
Aluminum (6061, 7075, T6 temper)
High-volume production-friendly. Aerospace brackets, housings, heatsinks, consumer enclosures.
/ MaterialStainless steel (303, 304, 316, 17-4 PH)
Medical, food/pharma, marine. Corrosion-resistant with controlled microstructure for repeatable finishes.
/ MaterialInconel (718, 625)
High-temp aerospace and energy. Carbide tooling, controlled feeds — milled and held to print on AS9100D programs.
/ MaterialTitanium (Ti-6Al-4V, CP titanium)
Aerospace structural, medical implant-grade. Tight thermal control and chip evacuation for clean finishes.
/ MaterialExotic alloys & engineering plastics
Hastelloy, Monel, Waspaloy, PEEK, Ultem. Quoted to print with material-specific machining strategies.
Where milled parts ship.
Aerospace
AS9100D, ITAR, mil-spec. Structural brackets, turbine housings, control surfaces, flight-critical hardware.
/ IndustryMedical device
Implant-grade titanium & stainless. Surgical instruments, implants, diagnostic enclosures.
/ IndustryDefense
ITAR-registered. Mounting hardware, optics housings, sub-assemblies for defense primes.
/ IndustryIndustrial & heavy equipment
Wear parts, hydraulic manifolds, custom tooling for mining, ag, and process equipment OEMs.
CNC milling questions, answered.
What tolerances can K+G hold on CNC milled parts?
Standard tolerance is ±0.0005″ across most milled features. Repeatable ±0.0002″ on tight callouts using simultaneous 5-axis machining with trunnion or tombstone fixturing. Tighter than that is quoted to print with the right setup and inspection plan.
What materials do you mill?
From 6061 / 7075 aluminum and 303 / 316 / 17-4 PH stainless to Ti-6Al-4V, Inconel 625 / 718, and engineering plastics like PEEK and Ultem — 200+ stocked grades. If the standard chart doesn't cover it, we source and qualify the material.
Do you handle prototype singletons and production releases?
Both on the same equipment, under the same QMS. K+G runs 1-piece prototypes through 50,000-piece production releases. Setup amortization, fixturing strategy, and lot sizing are baked into the quote.
What's the typical lead time for milled parts?
Quote in 24 hours. Standard lead time is 4–6 weeks depending on material availability, complexity, and quantity. Rush orders as fast as 1 week — flagged in the AI scheduler so a real production engineer signs off before we commit.
Are your milled parts AS9100D and ITAR compliant?
Yes. K+G runs an AS9100D / ISO 9001 quality system, is ITAR-registered, and provides full lot traceability with CMM-driven first articles per AS9102. The cert package emails with every shipment.
Send the print. Quote in 24 hours.
PDF + STEP + quantity + target ship date is the ideal package. A description and a quantity is enough to start. Real engineer signs off on every quote.