Faster Parts & Lower Prices
CNC Built Differently
RPM is PartsBadger’s automated CNC program built to make small and mid-size runs fast and affordable. Get a quote in minutes, parts shipped in as little as 2 business days.
The system behind the speed
Automated Quoting
Upload a STEP file and get a real price in seconds. No manual review, no follow-up calls.
Built for Efficiency
Our process is designed for the features we see most. That repeatability is what makes 2-day lead times possible.
Stock On Hand
All materials are sourced through PartsBadger's vetted supply chain and kept in stock. No waiting on raw material.
Inspected Before It Ships
Every RPM part goes through standardized inspection. Certificates included automatically.
Four Steps. Parts in Days.
No back-and-forth. No DFM wait. No surprise lead times. Whether you’re a first-time prototyper or an experienced engineer, RPM is built to move.
Drop in your STEP, IGES, SolidWorks, or STL file and set your quantity, anywhere from 1 to 1000 parts.
Qualifying parts get a real price and lead time instantly. No follow-up calls, no waiting.
Confirm material, coating, and quantity. Production starts the moment you check out.
Qualifying orders ship in as few as 2 business days. Inspected, deburred, and ready to use.
What Materials Does RPM Support?
We stock 13+ materials across aluminum, steel, stainless, brass, copper, and engineering plastics. All stock comes from our verified supply chain so we can guarantee lead time.
Most common RPM material. Excellent machinability, lightweight, and wide alloy selection. A favorite for prototypers and production engineers alike.
For strength-critical applications. 4140 is the most common steel in RPM production.
304 and 316 are most common. 17-4 PH for high-strength stainless requirements.
For electrical, plumbing, and precision-fit applications where conductivity matters.
Lightweight, low-friction applications. No coatings available for plastic parts.
Customer-supplied materials are not accepted for RPM. All stock is sourced through PartsBadger’s vetted supply chain.
FDA-compliant or specialty material requirements need manual review and are not instant-quote eligible.
Part Size & Tolerance Requirements
RPM is optimized for a specific size envelope. Parts outside this range are routed to standard production.
Box Parts — Max
2" x 6" x 8"
Min: 0.125" x 0.375" x 0.5"
Cylindrical — Max
8" x 6" tall
Min: 0.5" x 0.125" tall
Max Weight
12 lbs.
Max Weight
12 lbs.
3-Axis Operations
+/-0.002"
Applies within 0.5"–4" linear dimensions
3+2-Axis Operations
+/-0.005"
Applies within 0.5"–4" linear dimensions
Supported Part Features
RPM is built around a proven set of features we can machine at speed and quality. If your design stays within these parameters, you’re good to go.
Supported
- Threads — chamfers added for manufacturability
- Chamfers & fillets
- Countersinks & counterbores
- Corner radii up to 4x tool diameter
- Holes up to 6x hole diameter depth
- Prismatic features — pockets, holes, bosses
- Simple 3D / non-planar surfaces
- 3+2-axis machining
Not Supported
- Uncommon / non-standard thread types
- Broaching
- Intersecting drilled holes (hand-deburring required)
- Corner radii exceeding 4x tool diameter
- Holes deeper than 6x hole diameter
- Thin parts under 0.125" wall thickness
- Parts without suitable clamping surfaces
- Specialized engraving with variable lot # or date
Coatings & Surface Finishes
RPM supports a broad range of anodizing specs, chem film, zinc, and more, with materials certificate and certificate of conformance included with every order, automatically.
Note: Tolerances applied after coating are not supported. If coating buildup affects a critical dimension, a custom order is required.
Chromate conversion coating for aluminum. Provides corrosion resistance while maintaining electrical conductivity.
No special request needed. These are part of RPM’s standard process for every coated order.
No special request needed. These are part of RPM’s standard process for every coated order.
As-machined surface
Matte uniform texture
Directional grain
#3 or #4
Mirror-like surface
Also 63, 125, 250Ra
What to Upload
RPM works best when we have exactly what we need upfront. A clean STEP file gets you an instant quote in seconds. Anything that needs manual review gets routed accordingly.
REQUIRED
3D File
A 3D model is required for every RPM order. 2D drawings are accepted for reference only and don’t replace the 3D requirement.
- STEP (.stp, .step) — preferred
- IGES, Parasolid, SOLIDWORKS accepted
Triggers Manual Review
What Slows Things Down
These items will pause instant quoting and require a team member to review:
- Manufacturing notes requiring DFM input
- Price or lead time negotiation requests
- AMS / DFARS / PPAP requirements
- CMM or profilometer reports
- Customer-supplied material requests
What We Inspect
on Every RPM Order
RPM uses a standardized inspection process built for speed and consistency. Here’s exactly what’s covered and what isn’t, so there are no surprises when your parts arrive.
Standard — Every Order
Included automatically. No special request needed.
- Keyence silhouette inspection (offline programming)
- Caliper measurement — key dimensions by hand
- Standard hard gauging for critical features
- Visual deburr and finish verification
- Coating certificate (when applicable)
- Material certificate on file
- Certificate of Conformance
Available on Request
Adds lead time. Not compatible with instant quote.
- AMS material test report
- DFARS compliance documentation
- First article approval (customer form)
- AQL / sample-level inspection
- AS9102 first article inspection
- Generic brand material approval (written)
- Part pictures / certificate of origin
Not Available Under RPM
Requires standard production or a custom order.
- All GD&T callouts
- CMM reports
- Profilometer / surface finish callouts
- Non-standard thread inspection
- Thread depth tolerances under 0.01"
- Chamfer tolerances under 0.005"
- NADCAP / PPAP
When RPM Isn't the Right Fit
RPM’s speed comes from a defined process, and that process only works when parts stay within spec. If your order hits any of these flags, don’t worry, we can still quote your part. Our custom machining team will pick it up and take it from there.
- Customer-supplied materials
- GD&T / CMM inspection required
- Thin walls under 0.125"
- Tolerances applied post-coating
- Surface finish Ra callouts
- Parts over 12 lbs.
- FDA-compliant material required
- NADCAP / PPAP required
- No suitable clamping surface
- Non-standard engraving
- Quantities over 1,000 pcs
- Intersecting drilled holes
Built Fast. Used in the Real World.
From garage prototypes to small production runs, RPM parts are out there doing real work.
Let’s Build Your Next Project
No matter your timeline or order size, PartsBadger has a manufacturing solution to match. Upload your design files today and get a fast, competitive quote so you can keep your project moving.