Seven phases. Every decision visible. This is exactly how your part gets made — fixturing strategy, chip loads, inspection data. Nothing is a black box.
Mill sources certified 6061-T6 aluminum billet with full material certs. Each bar is measured on receipt — dimensions, hardness, alloy verification via XRF. No surprises in the middle of a run.
Aggressive roughing with 0.040″ radial stepover and optimized toolpaths leaves 0.015″ stock on all walls. Chip load is dialed per alloy — no chatter, no recutting. Cycle time: 12 minutes.
3/4″ Carbide · 8000 RPM · 180 IPM
Custom soft jaws machined in-house hold the part from Op-1 datum features. The 4th axis indexes to hit all five faces in a single setup — no re-clamp error, no datum shift. Fixture drawing included in your job package.
Custom soft jaw · 4th axis index
Finish passes run with 1/4″ ball endmill at 12,000 RPM, 0.0005″ radial depth. Bores are single-point bored to H7 tolerance. Surface finish measured with profilometer — Ra 0.8μm on critical faces.
Ra 0.8μm · 0.0005″ stock
Bench deburr on all accessible edges with 45° chamfer tool and hand stone. Internal bores get a custom deburring tool run through by CNC. No burr escapes. Parts are bagged individually after inspection.
0.005″ × 45° · All edges
Every first article gets a full CMM report on our Zeiss Contura. 47 features measured. The report ships with your parts as a PDF — nominal, actual, deviation, pass/fail on every callout. No black box.
Zeiss Contura · 100% first article
Parts are crated in custom foam, labeled with part number, revision, and material cert reference. CMM report is in the box. FedEx Priority for first articles — you have the part before your next stand-up.
FedEx Priority · Crated + labeled
Every procurement engineer's next question:
"How does Mill compare to
what I'm already doing?"
Three decisions every sourcing manager faces. Here's what the choice actually looks like.
Six material families. Four machine types. One shop. Tolerances from ±0.001″ on production runs to ±0.0002″ on first articles with CMM verification.
6061-T6 · 7075-T651 · 2024-T4 · 5052
Anodize · Alodine · Bare
4140 · 4340 · 1018 · 17-4 PH
Black oxide · Zinc plate · Passivate
303 · 304 · 316L · 17-4 PH
Passivation · Electropolish
Grade 2 · Grade 5 (Ti-6Al-4V)
Anodize Type II · Bare
Delrin · PEEK · Nylon · UHMW
Machined to print
Inconel 718 · Hastelloy C276
Aerospace / Energy
From first-article aerospace brackets to emergency replacement shaft collars at 2 AM — if the part needs to be right, it comes to Mill.
AS9102 FAIR · AMS material specs · Traceability
Brackets · Fittings · Actuator housings
Manifolds · Valve bodies · Cylinder ends
H7 bores · Cross-drilled ports · O-ring grooves
Surgical jigs · Implant trials · Fixture plates
PEEK · Ti-6Al-4V · 316L · Passivated
Structural frames · Gearbox housings · End effectors
Low-weight · Tight stack-up · Prototype speed
Obsolete part reverse engineering · Shaft collars · Cams
Sample-to-part · 24-hour turnaround available
ITAR-compliant shop · Controlled documentation
Weapon mounts · Optic rails · Structural brackets
Drop your STEP or IGES file. A machinist reviews it — not an algorithm. DFM notes back same day. Line-item quote within 24 hours.