partZpro is your the go to for CNC machining prototype service

In the evolving landscape of manufacturing, our company, partZpro, stands as a beacon of innovation in CNC machining services. We are at the forefront of revolutionizing CNC manufacturing services with our prowess in online CNC machining, offering rapid prototype machined parts with unmatched precision.

partZpro’s Excellence in CNC Machining Service

Our commitment to excellence in CNC machining service is evident in our use of advanced technologies. We specialize in a variety of CNC services, from CNC milling to turning, catering to a range of materials including metals and plastics. Our commitment to precision is shown in our adherence to standard tolerances, ensuring each component meets the highest quality standards.

CNC Machining Materials

Material Category	Materials
Aluminum	2011, 2014, 2024, 2219, 3003, 5052, 5056, 5083, 6013, 6060, 6061-T6, 6063, 6082, 7050, 7068, 7075-T6, MIC-6
Stainless Steel	304, 303, 316, 316L
Steel	Low Carbon Steel 1018, Mild Steel 1020, 1045, A36, Alloy Steel 4140, 1065, 4340, 8620, 9310
Titanium	Grade 2, 4, 5 (Ti6Al4V), 9
Copper & Brass	Copper C110, C101, C145, C172 Beryllium, C17510 Beryllium, C18200 Chromium, Brass 360C, C260, C270, C280
Bronze	C932
Plastics	PTFE (Teflon), PTFE (Modified), Derlin (POM), Acetal Copolymer (POM-C), PEEK Black, PEEK Natural, Polyether Ether Ketone (PEEK) GF30, HDPE, PVC, ABS, Acrylonitrile Butadiene Styrene (ABS) GF30, Polypropylene (PP), Polycarbonate (PC), Polyethylene (PE), Nylon PA6, Nylon 6/6 GF30, Nylon 12 GF30, Nylon 6 GF30, Black Eratalyte, White Ertalyte, Ertalyte TX, Ertalyte PET-P, Nylon PA9, Nylon PA12, Nylon PA11, UHMW, Polyamide-Imide (PAI), Polyetherimide (PEI, Ultem), Polyphenylene Sulfide (PPS), Polyurethane, Polyvinylidene Fluoride (PVDF), Acrylic (PMMA), Fiberglass Reinforced Plastics (FRP), Carbon Fiber Reinforced Polymer (CFRP), G10 (FR4), Epoxy, Polystyrene (PS), Polysulfone (PSU), Polybutylene Terephthalate (PBT), Polyethylene Terephthalate (PET), Polyphenylene Oxide (PPO), Styrene Acrylonitrile (SAN), Thermoplastic Polyurethane (TPU), Ultra High Molecular Weight Polyethylene (UHMWPE), Vespel, Zytel (Nylon), Noryl (PPE), Polyvinyl Chloride (PVC) Type 1, Ryton (PPS) GF40, Zamak 3, Zamak 5

Rapid Prototyping and Instant CNC Quotes

At partZpro, we redefine prototype machining services with our rapid CNC machining capabilities. Our platform enables customers to receive a CNC instant quote, streamlining the manufacturing process and ensuring efficiency and cost-effectiveness. Our online machining services allow for quick comparison of machining quotes and expedited delivery of parts directly from our CNC shops.

Cnc prototyping services

Cnc prototyping services - partZpro

CNC Machining Service Sizes (for lager parts please let us know)

Process	Max part size (mm/in)	Min part size (mm/in)	Min feature size (mm/in)	Standard tolerance (Metals/Plastics mm/in)	Lead time
3-Axis milling	2000 x 1700 x 1000 / 78.74 x 66.93 x 39.37	5 x 5 x 5 / 0.2 x 0.2 x 0.2	Ø 1 / Ø 0.039	+/-0.13 / +/-0.005 (Metals) +/-0.20 / +/-0.008 (Plastics)	10 days for 20 parts
5-Axis milling	650 x 500 x 250 / 25.59 x 19.68 x 9.84	5 x 5 x 5 / 0.2 x 0.2 x 0.2	Ø 1 / Ø 0.039	+/-0.13 / +/-0.005 (Metals) +/-0.20 / +/-0.008 (Plastics)	10 days for 20 parts
Turning	500 x 500 / 19.69 x 19.69	5 x 5 x 5 / 0.2 x 0.2 x 0.2	Ø 1 / Ø 0.039	+/-0.13 / +/-0.005 (Metals) +/-0.20 / +/-0.008 (Plastics)	10 days for 20 parts

CNC Machining vs. 3D Printing

We understand the unique benefits of CNC machining compared to 3D printing. While both have their place in modern manufacturing, our CNC machining prototype service offers superior durability and precision for complex parts.

Integrating AI and Digital Tools

Leveraging AI and digital tools, partZpro enhances the efficiency of our CNC manufacturing services. Our use of CAD software and standardized file formats like STEP ensures high precision and compatibility across various design processes.

Surface Finishing and Diverse Industry Applications

Our CNC machining services extend to a wide range of surface finishing options, catering to industries like aerospace, automotive, and healthcare. We pride ourselves on our ability to meet diverse industry requirements with tailored CNC solutions.

Surface Finish Services Options

Surface Finish
As machined, Ra 3.2 um, 126 uin
Smooth, Ra 1.6 um, 64 uin
Polish, Ra 0.8 um, 32 uin
Electropolish
Bead blast, no color
Bead blast, anodized (specify Pantone in the notes)
Sand blast, no color
Sand blast, anodized (specify Pantone in the notes)
Anodize Type I (specify Pantone in the notes)
Anodize Type II (specify Pantone in the notes)
Anodize Type III (specify Pantone in the notes)
Anodized hard coat (specify Pantone in the notes)
Silk screen
Oxide black
Oxide yellow
Powder coating black
Powder coating white
Zinc plating
Nickel plating
Chrome plating
Brushed finish
Laser engraving
Gold plating
Tin plating
Copper plating
Passivation
Chemical film
Conversion coating
Hard anodizing
Thermal spray coating
PTFE coating, Teflon
Cerakote coating
Custom surface finish (specify in the notes)

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Conclusion

At partZpro, we are committed to delivering excellence in online CNC machining. Our rapid CNC services are designed to meet the diverse needs of our clients, providing quality and speed in every CNC machined part.

PartzPro Frequently Asked Questions

The "Open-Book" Business Model

Q: Why is there a factory invoice in the box?

That is your Commercial Import Invoice. Because we ship Factory Direct to your door, international customs requires an invoice that travels with the package.

Transparency & Compliance: This invoice lists the origin factory (showing you exactly who made your parts) and declares the exact value you paid at checkout.
Why it matches your payment: We ensure the commercial invoice matches your transaction value so that Customs calculates your duties correctly and legally, preventing delays or penalties at the border.

Q: Why don't you offer Instant Quotes?

Because "Instant" usually means "Inaccurate." Competitors use algorithms to guess the price based on geometry averages. This often leads to:

The "Bait & Switch": They quote low instantly, then email you 24 hours later to raise the price once a human actually looks at it.
The "Risk Buffer": They inflate the price by 30% just to cover the errors their algorithm makes.

We measure twice, cut once. We have the factory validate the CAM strategy before we give you a price. You wait a few hours, but the price you get is the price you pay—guaranteed. No surprises.

Q: If I have the factory’s info, why shouldn't I just go direct next time?

First, strictly speaking, you cannot. To protect our platform, our Terms of Use include a Non-Circumvention clause that prohibits direct transactions with our suppliers for 24 months.

But practically, clients stay for the "US Shield." When you order through PartzPro, your money is held in US-based Escrow. We handle the legal leverage, language barriers, and financial security. If you go direct, you lose that protection and have zero recourse if something goes wrong.

Q: What exactly does your Service Fee cover?

Your fee covers Financial Security (Escrow), Vendor Vetting, AI Engineering Analysis, and Project Management. We act as your US-based legal firewall. We find the best factories, negotiate the rates, and hold the money until the job is done right.

Logistics, Customs & AI Technology

Q: Who handles the HTS Codes and Customs paperwork?

Our AI does the heavy lifting; you just confirm the release. We don't leave you guessing on complex government tariffs.

Heavy AI Analysis: Our proprietary AI Assistant performs a 40-point analysis of your part's geometry and material. It automatically searches the official US Government HTS database to generate a precise HTS Code Breakdown for your specific parts.
The Process: This data is provided to the carrier (DHL/FedEx/UPS). When the broker contacts you, the classification is already estimated—you simply confirm it to release the shipment.

Q: Who pays the duties?

You do—which saves you money. Because we ship DAP (Delivered at Place), you pay the exact duties owed to the government based on the AI-generated HTS code.

Why this is better: Competitors who offer "Free Shipping/DDP" often inflate the price to cover the worst-case tariff scenario. By paying the actual duties yourself, you ensure you are never overcharged for import taxes.

Q: How fast is shipping?

Since we skip the "Middleman Warehouse," our standard international shipping is extremely fast (typically 3–5 days transit). Your parts fly directly from the machine shop to your desk.

Quality Assurance & Liability

Q: Competitors inspect parts at a US warehouse before shipping. Why don't you?

Because "double handling" kills speed and adds unnecessary cost. We operate on a "Dock-to-Stock" model. The factory performs the rigorous QC, and parts ship directly to you.

We treat you like a professional: we know you will verify the fit and function of your parts upon arrival. By removing the redundant middleman inspection, we save you 30% on cost and 3–5 days on lead time.

Q: What happens if the parts arrive out of spec?

You are protected by the PartzPro Escrow Guarantee. Because we hold the funds, the factory does not get paid until you verify the order.

The Process: You have a 3-Day Inspection Window upon delivery to verify fit and function. If parts are non-conforming, simply upload a photo and inspection report within that window. We will either force an immediate priority remake at the factory’s expense or issue a refund.

*Bulk Order Extension: For large volume orders, this inspection window can be extended. To request an extension, simply reply to your automatic invoice email.

Q: Does your AI just check for geometry errors?

No. Our AI Cost-Driver Audit goes beyond simple DFM (Design for Manufacturing). It helps you perform Value Engineering by highlighting features that are disproportionately expensive (e.g., deep pockets, tight radii, non-standard threads). We show you the cost drivers so you can engineer the price down before you order.

Payments & Corporate Orders

Q: We are a company, not a hobbyist. Can we pay via Purchase Order (PO)?

Yes. We specialize in serving agile engineering departments and mid-sized manufacturing firms.

How to order with a PO: You can select "Pay via PO / Wire" at checkout or email our sales team directly with your PO attached. We will verify your company details and send a payment link or wire instructions immediately so production isn't delayed.

Q: Do you offer Net-30 Terms?

We offer terms to qualified business partners after an initial credit review. Please contact our sales team to set up your corporate account. For new customers, we recommend using our PO-to-Wire workflow for the fastest start.