Map the flow path
Locate drilling intersections and cleaning access.
CUSTOM PARTS / ENGINEERING & MACHINING
Stainless Steel CNC Machining for Sealing & Assembly
Cross-drilled passages, sealing faces and threaded connections need coordinated machining and cleaning. We develop the proposed stainless steel route around tool access, burr control and the features that seal or locate your assembly.
Cross holes leave internal burrsFeature-specific process planning
A sealing face must survive handlingDefined inspection condition
Cutting becomes unstableFirst-off and finishing scope
Connect machining access to sealing performance
Our review links the feature that matters in your assembly to the proposed setup, machining sequence and acceptance check.
| Your part challenge | Our proposed approach | How to verify the result |
|---|---|---|
| Cross holes leave internal burrs | Plan drilling intersections and an accessible deburring route. | Define an inspection method for the internal intersections and passages. |
| A sealing face must survive handling | Separate sealing texture and edge requirements from appearance-only surfaces. | Check the defined face and protect it through cleaning and shipment. |
| Cutting becomes unstable | Review grade, rigidity, tool engagement and coolant delivery as a route. | Tie feature results to the tool and inspection checkpoints. |
ILLUSTRATIVE ENGINEERING BRIEF
A 316L fluid block with intersecting passages
Illustrative RFQ: 25 fluid blocks, an 80 × 50 × 25 mm body, Ø6 mm cross passages and a Ra 1.6 µm sealing-face requirement.
25 pcsExample batch
Ø6 mmExample passages
Ra 1.6 µmCustomer face requirement
These numbers describe an example customer requirement, not a completed customer project or a guaranteed machining limit. Final feasibility is confirmed from the drawing.
The engineering challenge
An external dimensional report can miss burrs at intersecting passages. Surface texture alone also does not establish leak-tight performance.
The acceptance plan
Proposed acceptance: passage positions, specified face texture, internal burr acceptance and cleaning records. Functional pressure testing is a separately agreed scope.
A proposed machining route
- Review the passage map, sealing faces, thread specification and accessible ends.
- Sequence drilling and milling so intersections remain accessible for deburring.
- Deburr and clean before coordinating any specified passivation.
- Inspect the sealing face and passages; agree a separate pressure or leak test if required.
What our engineering review
brings to your quotation
Control the cutting route
Review rigidity, engagement and grade-specific tool planning.
Separate finish from function
Identify sealing faces and the specified surface treatment.
Inspect what is hidden
Agree internal-burr and cleanliness checks alongside dimensions.
Material selection
supports the part.
Confirm the grade after the functional requirements are clear.
Select the grade and condition for the actual corrosion, strength and joining requirements. A machinability preference does not automatically justify substituting 303 for 304 or 316L.
View Stainless Steel grade and specification notes
| Material option | Selection context | What to confirm |
|---|---|---|
| 303 | Machining-oriented components | Confirm corrosion and joining requirements. |
| 304 / 316L | Fluid and equipment components | Specify exposure, cleanliness and finishing needs. |
| 17-4PH | Strength-sensitive components | State the required condition and when final dimensions apply. |
Material reference: Material or fabrication reference ↗.
Questions about your machining project
Can you include internal burr control?
Provide a passage map and burr acceptance criteria. We can propose an access and inspection route for the intersections.
Does passivation guarantee a part will not leak?
No. Passivation and leak testing address different requirements. State pressure, medium and acceptance criteria for any functional test.
Can 303 replace 316L to make machining easier?
Only with approved material substitution. Corrosion, joining and service requirements must still be met.
Are the example parameters a guaranteed capability?
The example is a customer brief used to explain the proposed engineering route. Actual limits, cost and timing are confirmed from the complete drawing.
What should I include for this process review?
Send the CAD and drawing revision, exact grade, quantity and the critical requirements discussed above. Include mating-part details and required inspection records.
ENGINEER YOUR NEXT PART
Get a quote built around
your part requirements.
Send the drawing and tell us which feature controls assembly, sealing or motion. Our review connects that requirement to a proposed route and inspection scope.
- CAD model and 2D drawing revision
- Mating-part details and the fit problem to solve
- Material grade and accepted alternatives
- Quantity and requested delivery date
- Critical requirement: Cross holes leave internal burrs
- Critical requirement: A sealing face must survive handling
- Critical requirement: Cutting becomes unstable
- Inspection and functional validation scope