Products & Services

Protocase manufactures fully finished custom electronic enclosures and associated parts from a wide variety of materials and components, in 2-3 days with no minimum order. Protocase also provides expert and affordable enclosure design services.

CNC Milling

Bare Metal Finishes

CNC Machining creates a unique finish with visible toolmarks, due to the spinning motion produced by our CNC milling machines' cutters. Minor surface scratches, blemishes and swirl marks are to be expected for a CNC machined part with no additional finishing applied.

We offer different bare-metal finishing options to suit your requirements and desired aesthetics. (In addition, we also offer secondary finishes, including powdercoat and chem film coating. Click here to learn more).

No Finish:

No Finish
CNC Milling: No Finish

The as-is appearance after a part is machined. There will be visible toolmarks in swirl patterns, due to the spinning motion produced by the CNC mill's cutter.

Things to Consider:

  • • Appearance is not decorative in any way. No Finish is best for parts that will not be on display.
  • • Most cost-effective option where a uniform finish is not required.

Learn more about No Finish.

Stock Finish:

Stock Finish
CNC Milling: Stock Finish

Stock Finish is similar to No Finish parts in that there is no additional finishing applied, except the outer surfaces of your machined part are the raw material that was milled (For example: 0.5” plate or square tubing). Stock Finish parts may have scratches, as well as material identification print or stickers from the supplier.

Things to Consider:

  • • Appearance is not decorative in any way. Stock Finish should only be chosen if the parts will not be on display.

Learn more about Stock Finish.


Grained Finish:

Grained Finish
CNC Milling: Grained Finish

Once a part is CNC milled, the surface is finished using a brush/sander in order to achieve a specific grain.

Things to Consider:

  • • Ideal for flat parts
  • • Due to geometry, grained finish can only be applied to the outside surfaces of CNC machined cases and parts are not on the inside pockets.
  • • If choosing grained finish for machined parts with pockets, only the outermost surfaces will be grained finish. The pockets will remain unfinished.
  • • Parts with protruding features or bosses limit the ability to apply grained finish.
  • • Can be digitally printed, silkscreened, laser marked or engraved (as long as it’s a flat surface)

Learn more about Grained Finish.

Media Blasting:

Media Blasting
CNC Milling: Media Blasting

Once a part is CNC milled, the part is deburred and then a stream of tiny glass beads is sprayed onto the surface via compressed air. The end result is a bright, more uniform finish.

Things to Consider:

  • • Excellent option for removing toolmarks from machined parts.
  • • Flat, non-directional finish.
  • • Maximum part size is 16” x 24” x 16”
  • • Parts must have a minimum of at least one dimension that exceeds 2”
  • • Risk of warpage for thin parts and/or large surface area parts
  • • Can be digitally printed, silkscreened, laser marked or engraved (as long as it’s a flat surface)

Learn more about Media Blasting.

Vibratory Finish:

Vibratory Finish
CNC Milling: Vibratory Finish

After milling, parts are processed via a vibratory tumbler in abrasive medium to impart a random (non-directional) matte appearance that is similar to frosted glass.

Things to Consider:

  • • Limited to parts 10"L x 10"W x 10"H (254mm x 254mm x 254mm) or smaller
  • • Ideal for smoothing over rough edges
  • • Vibratory finishing will minimize the appearance of toolmarks, but not completely remove
  • • Can be digitally printed, silkscreened, laser marked or engraved (as long as it’s a flat surface)

Learn more about Vibratory Finish.