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Surface Finish Options in Multi Jet Fusion Technology

For every 3D printing project, our customers have five surface finishing options. Depending on the choice of finish, the parts receive a different visual effect, ranging from matte and rougher ones to smooth ones with a delicate shine.

In this article, we will describe four finishing options for Multi Jet Fusion technology.

1. Sandblasting with or without graphite

Sandblasting is the default processing method, which is included in every project estimate. The difference in both variants (with or without graphite) only affects the visual effect. The use of graphite results in a darker shade, and without graphite, the elements obtain a slightly lighter gray color.

Piaskowanie bez grafitu
Sandblasting without graphite
Piaskowanie z grafitem
Sandblasting with graphite

This method is used in almost all types of projects, regardless of the industry and part application.

Sample project with sandblasting finish: InnovationAG

2. Dip dyeing

Dip dyeing is an additional service that includes standard sandblasting. After sandblasting, the parts are colored black, which provides an aesthetic, matte visual effect.

Barwienie Zanurzeniowe
Dip Dyeing

In the case of this finish, we add an additional 10-15% to the quote.

3. Polyshot

This finishing consists of two stages. First, the parts are dip-dyed black and then sandblasted with special glass beads. The final result is a shiny, scratch-resistant surface, which works great for housings and other external elements.

Polyshot
Polyshot

In the case of this finish, we add an additional 30-40% to the quote.

Sample project with polyshot finish: Berger & Kraft.

4. Chemical processing

Chemical processing involves placing the parts in a chamber and using solvent vapors. As a result, the top layer of the part melts evenly, and the pores are closed, which ensures a very high surface smoothness, similar to parts created using injection technology. Additionally, it increases the durability of the parts.

Chemical processing
Chemical processing

However, it should be mentioned that the corners of the elements are rounded during the machining process, which minimally affects the part’s original dimensions.

In the case of this finish, we add an additional +50% to the quote.

Sample project with chemical finishing: Cortivision

What finish will be perfect for your project?

The choice of finish is primarily visual. Standard sandblasting is the ideal solution for format parts and other elements for which appearance is not important.

However, if we are dealing with the design of a casing or other element that needs to look good, it is worth considering chemical or polyshot finishing.

If you have additional questions about finishes or other concerns regarding your orders, write to us

Maciek Stefańczyk

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