Opens in a new tab
ROC Tarp HomepageGet a Quote
PRECISION CNC MACHINING

CNC machining. From geometry to a defined result.

Turn your design into a clearly defined manufacturing scope, with the process, material, finish and inspection reviewed together.
Review your CNC project
AI-generated illustrative concepts. Confirm the actual material and project requirements.

Geometry and access

Start with your current drawing and application.

Mating relationships

Agree the material, route and project conditions.

Final-condition inspection

Define what will be checked and approved.

CNC Machining capabilities & project scope

Bring milling, turning and multi-face features into one review of the part. Connect material, critical interfaces, finish and acceptance before confirming the route. The reviewed drawing and quotation establish the actual manufacturing scope. Confirm any specific process qualification or documentation needed for supplier approval.

Part definition

Current 3D model and drawing; units, revision and controlling dimensions.

Geometry / envelope

Overall size, internal features and access reviewed for the actual manufacturing route.

Material

Exact grade, condition and declared alternatives; availability confirmed during quotation.

Quantity

Prototype, initial batch and expected repeat quantities considered separately.

Critical features

Datums, mating interfaces and the tolerances required for the function.

Surface condition

Finish, cosmetic surfaces, edge treatment and after-finish dimensions.

Secondary operations

Machining, joining, inserts or other operations identified and included explicitly.

Inspection

Measurement scope, sample size, reference system and record requirements.

Sample approval

Purpose, test conditions, acceptance criteria and responsible approver.

Tooling / setup

Any dedicated tooling, holding and agreed reuse or maintenance requirements.

Identification & packing

Part number, revision, batch information and surface protection as required.

Delivery conditions

Desired milestone, destination and shipping scope; confirmed in the quotation.

Geometry and access

Review the part geometry and the feature relationships that define its function.

Mating relationships

Clarify the manufacturing and material questions before releasing the next stage.

Final-condition inspection

Agree the final condition, inspection records and sample approval scope.

How the cnc machining project moves forward

Share the design

Provide the application, files, material, quantity and target milestone.
Output · A reviewable brief and identified open questions.

Review & quote

Resolve process, geometry, material and acceptance questions.
Output · An agreed revision and defined quotation scope.

Validate the sample

Where required, evaluate a sample against the named objective.
Output · Recorded approval or clearly defined changes.

Release the build

Confirm quantity, final requirements and any approved changes.
Output · A controlled manufacturing release.

Inspect & hand over

Confirm records, identification, protective packing and delivery arrangements.
Output · The agreed part and documentation package.

Materials for cnc machining

Aluminum

Machining / MATERIAL REVIEW
Lightweight housings, brackets and prismatic geometry.
Grades · Specify the exact grade and required material condition.
Limitations · Alloy, temper, stock size and finished dimensions.
Cost · Stock or resin procurement, geometry, processing, finishing and verification affect the quotation.

Stainless steel

Machining / MATERIAL REVIEW
Exposed hardware, shafts and functional interfaces.
Grades · Specify the exact grade and required material condition.
Limitations · Grade, machining condition, surface requirements and exposure.
Cost · Stock or resin procurement, geometry, processing, finishing and verification affect the quotation.

Brass & copper

Machining / MATERIAL REVIEW
Bushings, connectors and application-defined conductive parts.
Grades · Specify the exact grade and required material condition.
Limitations · Alloy-specific properties, contact conditions and finish.
Cost · Stock or resin procurement, geometry, processing, finishing and verification affect the quotation.

Engineering plastics

Machining / MATERIAL REVIEW
Guides, spacers and insulating or sliding interfaces.
Grades · Specify the exact grade and required material condition.
Limitations · Polymer grade, moisture, temperature, creep and mating clearance.
Cost · Stock or resin procurement, geometry, processing, finishing and verification affect the quotation.

Define the surface that reaches your assembly

Process surface

Identify functional and cosmetic faces separately.
Agree the acceptable as-produced surface, edges and process marks.

Cosmetic treatment

Material and process compatibility need review.
Discuss the required texture, appearance and acceptance reference.

Functional finishing

Confirm masking, dimensional allowance and required records.
Specify any treatment or secondary work required by the application.
Tolerance & acceptance

General requirements

State the drawing standard, units and default requirements rather than assuming a blanket tolerance.

Functional interfaces

Mark fits, positions and features that control the assembled function.

Final material condition

Identify dimensions and properties that apply after treatment or conditioning.

Inspection basis

Agree methods, reference geometry, sample size and report format.

Appearance acceptance

Define visible faces, reference samples and permitted process marks where relevant.

Design considerations before cnc machining

Tool access

Highlight deep pockets, narrow slots and obstructed features; review the tool approach against the 3D model.

Internal corners

Identify where a mating feature requires a small radius and where a corner relief is acceptable.

Thin sections

Show walls and cosmetic faces that need a holding and machining strategy.

Critical fits

Connect dimensions to datums, mating parts and final surface condition.

Threads & bores

Provide the thread standard, pitch, usable depth and inspection access.

Final condition

State heat treatment, coating, edge treatment and dimensions after finish.

Connect quality requirements to each stage

Define the applicable acceptance requirements before release. Request any material, process, dimensional or test documents by scope and format. Availability and included work are confirmed for your order.

Before release

Resolve the controlling files, material, critical features and sample requirements.

During the project

Record changes and identify any approvals required before the next stage.

Before dispatch

Match records, identifiers, quantity and packing to the agreed handover.

Frequently asked questions

What file formats can I share?

Share your current drawing and 3D model using the contact form. Identify revision, units, material and the features that control fit.

How are project requirements confirmed?

The material, process, quantity, inspection scope and release conditions are agreed for the actual part before work proceeds.

Tell us about your cnc machining project.

Start with the drawing, application, material and quantity. Include any requirements that need a specific review.
CNC Machining

Leading PE tarpaulin factory in China. Specialized in manufacturing high-quality polyethylene tarpaulins.

  • what'sapp: +86 18561818308marketing@roctarpstarp.com
  • Get an instant quote