Engineering-oriented CNC machining support

CNC Surface Finishing for Machined Parts

Review anodizing, plating, coating, passivation, polishing, deburring, heat treatment, laser marking, and masking requirements before quotation so finish-related dimensions and inspection expectations are clear.

Anodizing, plating and coatingDeburring and edge-break reviewMasking and coating thicknessFinish-related inspection notes

Review Surface Finish Requirements View CNC Machining Services

CNC machined parts with anodized brushed plated and deburred surface finishes

Finishing service scope

Surface Finishing Review Scope

Surface finishing can affect appearance, corrosion protection, wear behavior, identification, hardness, insulation, assembly fit, lead time, and inspection. KENDORIC helps buyers review finishing requirements together with drawings, CAD files, material choices, tolerances, and critical dimensions before quotation. If coating thickness, masking, visible surfaces, threads, bores, or post-finish inspection matters, these details should be clarified early.

Finish Purpose

Cosmetic appearance, corrosion protection, wear resistance, identification, insulation, or assembly function.

Finish Type Review

Anodizing, hard anodizing, plating, powder coating, passivation where applicable, polishing, laser marking, and deburring.

Masking and Critical Areas

Threads, bores, sealing faces, bearing fits, cosmetic surfaces, and areas where coating build-up matters.

Inspection Expectations

Color, texture, coating thickness, surface roughness, marking position, and post-finish dimension checks.

Finish options

Common CNC Surface Finishing Options and RFQ Notes

Finishing Option	Common Use	Buyer RFQ Notes
Deburring	Remove sharp edges and machining burrs	Specify edge-break requirements or critical edges that must remain sharp
Anodizing	Aluminum protection, appearance, and surface improvement	Specify color, type, visible surfaces, masking, and coating-sensitive dimensions
Hard-coat anodizing	Improved wear resistance on aluminum parts	Mark functional surfaces, target thickness if known, and fit dimensions
Plating	Corrosion protection, wear behavior, or appearance	Specify plating type, thickness, masking areas, and inspection needs
Powder coating	Protective or visual coating for suitable parts	Specify color, texture, masking, and surfaces where coating build-up matters
Polishing / Brushing	Appearance control, stainless steel surfaces, or functional surface improvement	Specify surface direction, visible areas, roughness target if needed, and cosmetic expectations
Heat treatment	Improve hardness or mechanical properties when required	Include material grade, hardness target, and dimensions to inspect after treatment
Laser marking	Part identification, batch number, or orientation mark	Provide marking file, location, size, depth, or contrast expectation
Passivation where applicable	Additional treatment for suitable stainless parts	Specify requirement, applicable surfaces, and documentation needs

Material compatibility

Material and Finish Matching

Aluminum

Often used with clear anodizing, black anodizing, hard anodizing, coating, marking, or deburring.

Stainless Steel

May require deburring, polishing, brushing, passivation where applicable, or controlled surface roughness.

Carbon Steel

May require plating, coating, black oxide, painting, or anti-rust protection depending on use.

Engineering Plastics

Usually require attention to burrs, edge quality, surface marks, and material behavior rather than metal finishing routes.

Dimensional control

Finish-related Dimension and Inspection Review

Coating Build-up

Anodizing, plating, powder coating, and other coatings may affect bores, threads, slots, sealing surfaces, and assembly interfaces.

Masking Requirements

Threads, bearing fits, sealing faces, grounding surfaces, or tight assembly areas may need masking or special notes.

Post-finish Inspection

Critical dimensions, thread checks, visual surfaces, marking location, and coating-sensitive features should be confirmed when needed.

RFQ examples

Finish RFQ Notes Examples

Black anodizing required. Cosmetic visible surfaces are marked on drawing.

Hard-coat anodizing required on sliding surfaces. Bore dimensions are critical after finish.

Laser mark part number on face A. Marking file attached.

Deburr all edges. Do not round the two locating edges marked as critical.

Powder coat external surfaces only. Mask threads and bearing surfaces.

Quotation inputs

RFQ Information Needed for Surface Finish Review

Files

2D drawings
3D CAD / STEP files
Sample photos if available

Finish Requirements

Finish type
Color / texture / gloss
Coating thickness if required
Marking requirement

Critical Areas and Inspection

Threads / bores
Sealing surfaces
Bearing fits
Cosmetic faces
Masking areas
Post-finish dimensions
Surface roughness
Visual standard or report needs

Review Surface Finish Requirements

Send Surface Finish Requirements for Review

Share your 2D drawings, 3D CAD files, material grade, finish type, color or appearance target, coating thickness if required, masking areas, critical dimensions, and delivery details for review before quotation.