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CNC machining services

CNC machining services in the USA, engineered once.

Upload a CAD file and get a price in minutes. We engineer every job once, and any qualified American shop in our network runs that same Job Packet — so every reorder is the same part, with the ship date written into your order.

Upload a partHow it works
Catalog spec · ENV-1.0
Process
3-axis vertical milling
Max part size
12 × 8 × 4 in
Setups
Up to 2 — op1 / op2 flip
Tolerance
±0.005 to ±0.0005 in
Quantity
1 – 500 pcs, priced in minutes

Catalog parts and custom quotes.

Parts inside the catalog spec are priced in minutes with a guaranteed ship date. Everything else gets a custom quote from our team within two business days.

Catalog

3-axis milled parts from the stocked material library. Upload the model and get a price and ship date in minutes. Miss the date and you’re credited on the invoice.

  • Price in minutes
  • Guaranteed ship date
  • Batch savings

Custom quote

Turned parts, 5-axis work, weldments, exotic materials, larger formats and assemblies. Our team quotes it with a committed ship date and full documentation.

  • Quote within 2 business days
  • Committed ship date
  • Full documentation

CNC milling capabilities and part size limits.

The catalog covers 3-axis prismatic parts up to 12 × 8 × 4 in, from a fixed material library, with tolerances priced from a menu. That focus is what lets us verify every job before it’s cut.

The catalog envelope, ENV-1.0An isometric render of the maximum part envelope, a box 12.000 by 8.000 by 4.000 inches, with a typical aluminum part inside it on an inch grid and an end mill in its pocket. Callouts: minimum internal corner radius 0.031 inch, which accepts a 1/16 inch end mill; 3-axis vertical milling, with drilling, tapping, reaming and counterboring; a maximum of two setups, op 1 then a flip for op 2; minimum wall 0.030 inch in metals and 0.060 inch in plastics; and the minimum part size, 0.375 by 0.375 by 0.125 inch, drawn to scale.12.0008.0004.000CATALOG ENVELOPE · ENV-1.0 · INCHES123451Min internal corner R 0.031 inAccepts a 1/16 in end mill23-axis vertical millingDrill, tap, ream and counterbore3Min wall 0.030 in metals0.060 in plastics4Max 2 setupsOp 1, then flip for op 25Min part size, to scale0.375 × 0.375 × 0.125 in
The catalog spec, ENV-1.0. Custom work outside it is quoted within two business days.

Processes in the catalog

Processes in the catalog spec
3-axis vertical millingUp to 2 setups per part — op1 / op2 flip
Drilling · tappingForm and cut taps, within milling ops
Reaming · counterboringWithin milling ops
Chamfering · deburring passesWithin milling ops

Quoted custom

  • Turning
  • 3+2 and 5-axis
  • Wire and sinker EDM
  • Grinding
  • Welding and weldments

Part geometry

Geometric limits of the catalog spec
ParameterLimitWhy
Max part size12 × 8 × 4 inFits every network VMC with fixture clearance
Min part size0.375 × 0.375 × 0.125 inBelow this, workholding turns custom
Min wall0.030 in metals · 0.060 in plasticsChatter and verification risk
Min internal corner radius0.031 inAccepts a 1/16 in end mill
Hole depth : diameter8:1 standard · 12:1 flaggedDrill wander, simulation confidence
Pocket depth : tool diameter4:1 standard · 6:1 flaggedDeflection modeling limits
ThreadsUNC/UNF #2–3/4 in · M2–M20 · 2B/6HStandard tap library
Undercuts · T-slots · dovetailsFlaggedSpecial tooling path

A flagged feature gets an engineer’s review within 4 business hours, and the part stays in the catalog.

CNC machining tolerances, priced by class.

A print with mixed callouts is priced per feature class — so a ±0.005 in bracket is never priced like a ±0.0005 in bearing bore.

Priced tolerance classes: linear, hole, and flatness limits
ClassLinearHolesFlatnessFlatnessPricing
Standard±0.005 in±0.003 in0.005 in/inDefault. Price in minutes.
Precision±0.002 in±0.001 in0.002 in/inPrice in minutes, premium.
Tight±0.0005–0.001 into ±0.0005 inPer featureFlagged. Routes to a CMM-verified shop.

GD&T is accepted. True position and profile callouts tighter than the Precision class go to an engineer for review.

Stocked materials and standard finishes.

Every material is stocked on a shared thickness ladder from 0.25 in to 4.5 in. That shared stock is what lets parts from different customers run in one setup — and lowers your price.

Material library

  • Aluminum6061-T6 · 7075-T651
  • Stainless303 · 304 · 17-4 PH (Cond A & H900)
  • Steel1018 · 4140 (annealed & pre-hard)
  • Brass360
  • Titanium6Al-4V — flagged pricing tier
  • PlasticsDelrin 150 · UHMW · PEEK (flagged) · polycarbonate

Customer-supplied material is accepted with a cert. How to choose a material.

Finishes

Surface texture, material removal required — Ra 125125As-machined · defaultSurface texture, material removal required — Ra 6363As-machined · premiumRa values in µin
  • Bead blastUniform matte. The default cosmetic pass.
  • Anodize Type IIClear or black. Other colors are flagged.
  • Anodize Type IIIHardcoat, for wear surfaces.
  • PassivationStainless, per the material's spec.
  • Zinc plateCorrosion protection on carbon steel.
  • Black oxideTooling, fixtures, low-reflectance parts.
  • Powder coatStandard RAL subset.

Chem film, nickel and other finishes go to a qualified partner, with the added days stated on your quote.

Lead times you can put in writing.

Your ship date is built for your job: the packet’s runtime estimate, the shop’s delivered record and a buffer for that class of work. Choose Standard or Rush. If a machine goes down, the job moves to another qualified shop.

Quantities and reorders

Quantity bands and how each is quoted
1 – 500 pcsCatalog. Price and ship date in minutes.
501 – 5,000 pcsEngineered quote within 2 business days.
Over 5,000 pcsA program conversation — we scope it with you directly.
ReordersRun from the existing packet, at any prior quantity. No new engineering.

What the guarantee covers

Catalog parts
The ship date is written into your order. Miss it and you’re credited on the invoice — no claim forms.
Custom quotes
A committed ship date, set by our team.
Nonconforming parts
Remade at Rush speed at our cost, or refunded — your choice.
Read the guarantee

Certs and inspection reports with every order.

Every order ships with material certs and a dimensional report written against the packet’s inspection plan. First article inspection in AS9102 format is available on request.

ITAR-controlled work routes only to registered shops, with segregated storage and access logging, and never shares a batch with non-ITAR work. Identify controlled data before you upload it.

How quality works
Dimensional report
In the Job Packet

Housing

6061-T6 · Rev A

Report pre-filled from the inspection plan
Ballooned view
#FeatureMeasured
1Overall length4.000±.005Caliper—
2Pocket length3.000±.005Probe—
3Pocket depth.500±.005Probe—
4Hole position, 4XØ.201Ø.005ABCProbe—
5Counterbore, 4XØ.332±.005Probe—

Measured · recorded at the shop

  • Instrument ID and calibration date recorded per line
  • First article at every shop when the packet changes

The traceability chain

  1. Packet revision
  2. Shop
  3. Machine
  4. Material lot + cert
  5. Tool list revision
  6. Probe logs
  7. Inspection report
  8. Ship date

Machined by an independent American shop.

Your part is cut by an independent American shop that receives a complete Job Packet: verified programs, setup sheets, tool list, fixture plan, probing routines and the inspection plan.

Praetore stays the manufacturer of record. One accountable company, one PO, one invoice.

Shop portal
Routed to your shop

New job

Housing

Job Packet · Rev A

Material
6061-T6
Qty
24
Ship by
The date on the order
Rate
Set before you accept
AcceptDecline(no penalty)

Job Packet

12 of 12 verified
  1. 04Verified NC programs
  2. 06Setup sheets
  3. 08Tool list
  4. + 9 more artifacts · all verified

Status · one tap each

  1. 01Accept
  2. 02In-setup
  3. 03First-piece hold
  4. 04In-cut
  5. 05Complete

Stuck at any stage? Engineering comes to you.

Issue
Paid on deliveryYou invoice us, not the buyer

What the shop receives: the job routed, the packet verified, the rate set up front.

For buyers

Send us a part

Upload a CAD file. We engineer it once, and every run after — at any shop in the network — is the same part. Catalog parts are priced in minutes; custom work is quoted within two business days.

Upload a partRead the guarantee
For shops

Run jobs, not quotes

We send American shops programmed, verified jobs. No quoting, no programming, no fees — and you’re paid on delivery.

Apply as a shopRead the standard