Lightweight Part Sourcing Guide

Aluminum CNC Machining Supplier for Custom Parts

Aluminum is often chosen for lightweight precision parts, fixtures and enclosures. The supplier still needs to understand finish, wall thickness, cosmetic faces and how the part will behave after machining or anodizing.

Buyer Decision Snapshot

Use this page when you already have drawings or a part concept and need to decide whether XHR is a fit for the process, material and inspection requirements.

Common grades

6061 for general parts, 7075 for stronger parts, and other grades after review

Common finishes

Anodizing, bead blasting, brushing and cosmetic finishing where required

Risk areas

Thin walls, deep pockets, sharp corners, cosmetic faces and coating buildup

Buyer outcome

A better fit between design, finish and machining cost

What Buyers Usually Need

Why aluminum is popular

It is light, machinable and practical for enclosures, brackets, plates and machine hardware.

Where risk appears

Thin walls, tight corners and finish buildup can change cost and dimensional behavior.

What to mark on drawings

Cosmetic faces, threaded holes, mating surfaces and post-finish dimensions should be clear.

What to ask the supplier

Ask how the part will be held, finished and inspected before you approve the quote.

What to Send in the RFQ

  • Current drawing revision and 3D model when available.
  • Material grade, substitute options and any certificate requirement.
  • Quantity, repeat quantity and target delivery date.
  • Critical dimensions, threads, datums and surface finish notes.
  • Inspection report, packing and shipping destination requirements.

Example Images

Common Buyer Mistakes

Ignoring anodizing allowance

Coating buildup and edge treatment can affect dimensions if they are not planned early.

Mixing cosmetic and functional surfaces

These surfaces should not be treated the same way in the RFQ.

Using material without reason

6061 and 7075 solve different problems, so the grade should match the part function.

How XHR Reviews This Order

Material choice

XHR checks whether 6061, 7075 or another grade fits the application and cost target.

Surface planning

The team reviews cosmetic and functional surfaces before finish decisions are locked in.

Machining behavior

Wall thickness, pocket depth and fixture stability are reviewed before quoting.

FAQ

Which aluminum grades are most common?

6061 and 7075 are the most common starting points, but the application decides the final grade.

Should anodizing be on the drawing?

Yes. Color, finish type and cosmetic expectations should be written clearly.

Can XHR make enclosure-style aluminum parts?

Yes. Enclosures, housings, plates and brackets are common drawing-based parts.

Request a Quote

Send the drawing, quantity and finish requirements. XHR will review the part before quoting.