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ProtoSpace Mfg

Bare Metal Finishes

A great option if you don't want to have parts painted.
We offer several bare finishes for custom parts, enclosures and panels.
- No Finish
- Grained Finish
- Vibratory Finish
- Media Blasting
- Stock Finish

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No Finish

Sheet Metal

CNC

★Part is deburred with no additional finishing.
★No added cost.
★Best economical option for functional, non-display parts.
★Not a decorative finish (so, graphics are not recommended).
★Minor surface scratches, swirl marks and blemishes are to be expected.
★CNC machined parts will have visible tool marks.

No Finish Samples

No Finish

Panel with No Finish and Digital Print

Panel with No Finish

No Finish Part

CNC Machined No Finish Part

CNC Machined No Finish enclosure

CNC Machined No Finish Part

Grained Finish

Sheet Metal

CNC

★Part is deburred, and then given a specific linear grain direction via brushing.
★Applied to sheet metal parts before bending.
★Can only be applied to accessible flat exterior faces on machined parts.
★Aesthetically superior option for bare finish for parts or enclosures that will be displayed.
★Can be digitally printed and silkscreened

Grained Finish Samples

Grained Finish Panel with Digital Print

Grained Finish with Laser Marking

Grained Finish with Digital Print

Front Panel with Silkscreen

Grained Finish Rubber Stamping

CNC Milled Panel with Grained Finish

Vibratory Finish

Sheet Metal

CNC

★Smooths and imparts random finish via tumbling in abrasive medium.
★Excellent for machined parts.
★Great option for a random (non-directional) bare metal finish.
★Maximum part size is 10"L x 10"W x 10"H.
★Minimum part size: Part must have a cross-sectional dimension of at least 1" (25.4 mm), and a length of at least 3" (76.2 mm).
★Rolls over corners very well.
★Minimizes tool marks on CNC machined parts.
★Not available for copper.
★Can be digitally printed and silkscreened

Vibratory Finish Samples

Vibratory Finish Panel with Digital Print

Vibratory Finish and Cutouts

Panel with Vibratory Finish

CNC Machined enclosure with Vibratory Finish

CNC Machined part with Vibratory Finish

Diecast enclosure with Vibratory Finish

CNC Machined part with Vibratory Finish

Media Blasting

Sheet Metal

CNC

★Part is deburred and cleaned, then sprayed with a steady stream of tiny glass beads via compressed air.
★End result is a smooth, bright finish that's flat and non directional.
★Excellent for machined parts.
★Great option for sheet metal parts, but large, thin sheet metal should be avoided in order to avoid warpage.
★Materials: Aluminum, Stainless Steel and Copper.
★Maximum part size: 6"x6"x6" (152.4mm x 152.4mm x 152.4mm).
★Minimum part size: Part must have at least one dimension that exceeds 2" (50.8mm).
★We recommend handling with gloves in order to avoid staining or smudging the parts.
★As it is a manual process, results may vary in terms of uniformity, especially when anodizing will be applied to your media-blasted part.
★Can be digitally printed and silkscreened
★Can be permanently marked with laser marking and rubber stamping

Media Blasting Samples

Media Blasting

Copper bus bar with media blasting

Media blasted panel with different laser marking types

Two copper bus bar styles with media blasting

CNC Machined enclosure with Media Blasting

Stock Finish

Sheet Metal

CNC

★Similar to No Finish in that there is no additional finishing applied.
★The outer surfaces of your machined parts are left as the raw material (for example: plate, tubing or bar stock).
★Parts may have scratches, as well as material identification print or stickers from the supplier.
★Not decorative in any way and should only be chosen if the parts will not be on display.