Finishing and Post Processing
- Sanded, primed, and ready for you to finish
- Clear coated, dyed, or painted
- Vaccuum Plating, Electroplating, and Electromagnetic (EMI) Shielding

Process
Description
Natural
Matte, white finish.
Tumbled
The surface is smoothed with a media for an eggshell finish.
Smoothed & Sealed
Bead-blasted and vapor smoothed for a sealed, satin watertight finish.
Dyed
Dyed, please specify the color.
Smoothed, Sealed, & Dyed
Vapor-sealed and dyed (specify color) for a satin, watertight finish.
Primed Exterior
Exterior (cosmetic) surfaces are smoothed and coated in grey primer.
Painted
Parts are smoothed, primed, and painted (provide drawing with paint specifications).
Custom
Custom finish. Let us know if your project requires special finishing. Please fill out our engineer-assisted quote form.
Process
Description
Natural
Matte, grey finish.
Standard
Matte finish dyed black.
Tumbled
The surface is smoothed with a media for an eggshell finish.
Smoothed & Sealed
Bead-blasted and vapor smoothed for a sealed, satin watertight finish.
Smoothed, Sealed, & Dyed
Vapor-sealed and dyed black for a satin, watertight finish.
Primed Exterior
Exterior (cosmetic) surfaces are smoothed and coated in grey primer.
Painted
Parts are smoothed, primed, and painted (provide drawing with paint specifications).
Custom
Custom finish. Let us know if your project requires special finishing. Please fill out our engineer-assisted quote form.
Process
Description
Natural
Support faces are sanded, and layer lines are visible.
Standard
Support faces are sanded, and the entire part is bead-blasted for a matte/opaque finish with some layer lines visible (black will appear grey).
Improved Exterior
Exterior (cosmetic) surfaces are sanded, and the entire part is bead-blasted for a smooth matte finish.
Improved All
All accessible surfaces are sanded, and the entire part is bead-blasted for a smooth matte finish.
Clear
Natural finish with clear coat. The layer lines are still visible.
Improved Clear
All accessible surfaces are sanded smooth with a clear coat for optimal clarity on transparent materials.
Primed Exterior
Exterior (cosmetic) surfaces are sanded, bead-blasted, and primed grey.
Primed All
All accessible surfaces are sanded, bead-blasted, and primed grey.
Painted
All accessible surfaces are sanded, bead-blasted, primed, and painted (provide a drawing with your paint specifications).
Custom
Custom finish. Let us know if your project requires special finishing. Please fill out our engineer-assisted quote form.
Process
Description
Natural
Support faces are sanded, and layer lines are visible.
Standard
Support faces are sanded, and the entire part is bead-blasted for a matte/opaque finish with some layer lines visible (black will appear grey).
Improved Exterior
Exterior (cosmetic) surfaces are sanded, and the entire part is bead-blasted for a smooth matte finish.
Improved All
All accessible surfaces are sanded, and the entire part is bead-blasted for a smooth matte finish.
Clear
Natural finish with clear coat. The layer lines are still visible.
Improved Clear
All accessible surfaces are sanded smooth with a clear coat for optimal clarity on transparent materials.
Primed Exterior
Exterior (cosmetic) surfaces are sanded, bead-blasted, and primed grey.
Primed All
All accessible surfaces are sanded, bead-blasted, and primed grey.
Painted
All accessible surfaces are sanded, bead-blasted, primed, and painted (provide a drawing with your paint specifications).
Custom
Custom finish. Let us know if your project requires special finishing. Please fill out our engineer-assisted quote form.
Process
Description
Natural
Support faces are sanded, and layer lines are visible.
Standard
Support faces are sanded, and the entire part is bead-blasted for a matte/opaque finish with some layer lines visible (black will appear grey).
Improved Exterior
Exterior (cosmetic) surfaces are sanded, and the entire part is bead-blasted for a smooth matte finish.
Improved All
All accessible surfaces are sanded, and the entire part is bead-blasted for a smooth matte finish.
Clear
Natural finish with clear coat. The layer lines are still visible.
Improved Clear
All accessible surfaces are sanded smooth with a clear coat for optimal clarity on transparent materials.
Primed Exterior
Exterior (cosmetic) surfaces are sanded, bead-blasted, and primed grey.
Primed All
All accessible surfaces are sanded, bead-blasted, and primed grey.
Painted
All accessible surfaces are sanded, bead-blasted, primed, and painted (provide a drawing with your paint specifications).
Custom
Custom finish. Let us know if your project requires special finishing. Please fill out our engineer-assisted quote form.
Process
Description
Natural
Supports are removed. Parts will have visible layer lines.
Improved Exterior
Exterior (cosmetic) surfaces are sanded to reduce layer lines.
Smoothed & Sealed
Vapor smoothed and sealed for a watertight finish. May modify the geometry slightly.
Primed Exterior
Exterior (cosmetic) surfaces are smoothed to reduce layer lines and coated in grey primer.
Painted
Parts are smoothed to reduce layer lines, primed, and painted (provide drawing with paint specifications).
Custom
Custom finish. Let us know if your project requires special finishing. Please fill out our engineer-assisted quote form.
Process
Description
Natural
Support faces are sanded, and layer lines are visible.
Standard
Support faces are sanded, and the entire part is bead-blasted for a matte/opaque finish with some layer lines visible (black will appear grey).
Improved Exterior
Exterior (cosmetic) surfaces are sanded, and the entire part is bead-blasted for a smooth matte finish.
Improved All
All accessible surfaces are sanded, and the entire part is bead-blasted for a smooth matte finish.
Clear
Natural finish with clear coat. The layer lines are still visible.
Improved Clear
All accessible surfaces are sanded smooth with a clear coat for optimal clarity on transparent materials.
Primed Exterior
Exterior (cosmetic) surfaces are sanded, bead-blasted, and primed grey.
Primed All
All accessible surfaces are sanded, bead-blasted, and primed grey.
Painted
All accessible surfaces are sanded, bead-blasted, primed, and painted (provide a drawing with your paint specifications).
Custom
Custom finish. Let us know if your project requires special finishing. Please fill out our engineer-assisted quote form.
Process
Technologies
Description
Soft Touch
All Technologies
Soft, rubberlike part coating.
Light Bleaching
Material Jetting
UV treatment is used to enhance the clarity of Vero Clear material.
Vacuum Plating
Other AM technologies upon consultation.
Aluminum
Electroplating
Other AM technologies upon consultation
Copper and nickel are available.
Electromagnetic (EMI) Shielding
All technologies
A conductive paint coating is applied to the part.
Are you ready to get a quote?
Automated Post-Processing
PostPro3D
Additive Manufacturing Technologies (AMT) has developed the next step in the digital manufacturing world, an automated finishing solution. The Postpro3D not only offers an ultra-smooth finish it boosts no loss to tensile strength, increased elongation at break, and less porosity. Midwest Prototyping has found this technology so handy we have a whole fleet ready to speed up your post-processing and finishing needs. We’ve found our clients are extremely happy with the results and the automation helps us build and finish more quality parts in a shorter timeframe.

Process
AMT developed the BLAST (Boundary Layer Automated Smoothing Technology) process to smooth various thermoplastic polymers using a physio-chemical treatment. Using condensation of chemicals onto the part’s surface, the polymer reacts to reflow, and irregularities and sealing occur. During the curing phase, the substances evaporate, causing the surface to solidify.
Surface Quality
The BLAST process has been used on everything from glasses frames to medical applications and can be used for industries from automotive to aerospace. The Postpro3D can create a surface finish with a Ra of less than 1 micron.
PostproDP Pro
Additive Manufacturing Technologies (AMT) has bridged the gap between completed LS and MJF parts and their vapor smoothing PostPro3D with the PostproDP Pro. This machine speeds up the de-powdering process by up to 60%, tremendously cutting down the cost and human error by automation. We can process hundreds, even thousands of parts, with consistency.

What is a "recipe," and how does that help ensure more consistency?
A “recipe” is one or a combination of standard abrasives such as corundum, glass beads, ceramics, nutshells, plastic, and fine grain sizes of stainless steel and steel that can be used to de-powder your part. We can save the recipe and use them repeatedly to effectively create consistency between batches and serial runs, allowing us to move toward larger production runs.