Hands comparing a machined prototype housing with an unmarked engineering drawing

CNC Prototype Machining

We machine prototype covers, housings and custom parts for fit, assembly and design evaluation. Each follows an agreed revision and the checks needed to decide what comes next.

ISO 9001 certifiedMade to your drawing · Hangzhou, China

View part reference

What does the prototype need to prove?

We plan the prototype around the question it needs to answer: fit, assembly, appearance or a defined functional check. Mark fixed interfaces, mounting datums, clearances and cover fits on the drawing.

Automotive & motorcycle prototypes

Specify pressure, functional or vehicle tests separately from machining. Include the procedures, fixtures, acceptance limits and responsibility for validation.

Keep the revision, checks and approval together

StageInputMethod & responsibilityReviewable result
Set the evaluation purposeCurrent STEP or IGES model and controlled drawing revision; fit, assembly, appearance or defined functional objective.Mark fixed mating interfaces, mounting datums and clearances. Record open design decisions and approved material or finish alternatives.An agreed revision and evaluation scope, with the decisions the prototype can support.
Make the agreed versionMaterial, condition, finish, prototype quantity and critical interfaces.Before machining, settle the measurements, locating fixtures, test procedures and acceptance limits. Pressure or vehicle tests need their own procedures and a named responsible party.The prototype and the dimensional or functional records agreed for the evaluation.
Review and approveMeasured interfaces, fit or test results and any remaining issues.Name the approver. Record acceptance, deviations and changes needed for the next revision.A reviewable approval or change record. A later prototype or batch requires its own released revision.
White and turquoise bridge coordinate measuring machine with a probe above its granite table

Checks for the prototype

Before machining, we agree which prototype features to measure, how to measure them and what to report. The equipment review includes current calibration evidence.

Prototype approval checklist

Record what differs from production

A prototype may use the intended production material, condition and finish, or an approved alternative for the evaluation. Record where the alternative limits conclusions about the production part.

Material and condition
The approval record identifies changes in alloy, temper, polymer grade, fillers or stock condition. Aluminum options include 6061 and 7075; temper and heat treatment must suit the evaluation and intended production specification, with the required material records.
Finish and working surfaces
Define the prototype finish and intended production treatment. Protect working fits, contact areas, threads and dimensions after treatment.
Edges and measurement state
Agree burr limits, edge quality, cleaning and measurement conditions. Where the prototype uses a substitute material or finish, identify the application checks that require the production specification.

The next revision or batch

Record feedback, open issues and permitted changes. Identify and approve the next model / drawing revision before another prototype is machined. Acceptance stays tied to the tested revision and evaluation scope. A repeat batch needs its own baseline, quantity, sampling plan and commercial order.

Request a prototype review

  • Current model and drawing revision, fixed interfaces and open design decisions
  • Fit, assembly, appearance or defined functional question
  • Material and finish for this evaluation, including approved alternatives
  • Checks, records, test responsibility and authorized approver
  • Prototype quantity, planned next revision or later batch
  • Delivery destination and requested date

You can order from 1 piece. Production takes 7-14 business days after drawing and order confirmation, including finishing. Shipping takes additional time. Your quotation confirms the schedule for the quantity and requirements agreed.

Request a quote

Add your name, destination country and preferred contact details. Drawings and a message are optional.

Image viewer

Open image

Loading image…