SLS 3D 打印部件染色指南

When choosing a dyeing system, one should consider the part size, quantities, price, and levels of color consistency required. Dyeing systems range from a few hundred dollars to tens of thousands of dollars, and the price is often commensurate with the level of quality and consistency achievable. The four most common methods for dyeing 3D printed parts each have distinct advantages, and it’s important to set expectations regarding color quality and budget before choosing a method.

The hardware that we recommend for dyeing is the ESVC-28 - Spectrum Thermal Circulator from Winco. This machine is affordable, available from multiple sources, and is easy to set up and use.

US Source: $699.99

EMEA Source: €659.99

APAC Source: $299

Any system that is able to reach the necessary temperatures of 80 °C to 90 °C as well as circulate the solution should be adequate for dyeing. We also recommend having stainless steel tongs nearby to assist in removing parts from the dye bath.

There are also industrial solutions available on the market for dyeing SLS parts, like the Dyemansion DM60, that are cost-effective for high volumes of parts and when extremely consistent results are necessary. This product is capable of holding up to 60 L of components per dyeing batch and will automatically inject the dye as well as rinse the parts post-dye.

The DM60 confers a much higher degree of consistency when compared to pot dyeing as well as improved UV stability of the dyes. An additional service offered by Dyemansion is tailored color development. For users with a strict color requirement or who are looking to dye a very high volume of parts (end-use parts, production runs of 1000+ units), using an industrial machine such as the DM60 may be a good choice.

These larger format solutions take much of the manual labor out of the dyeing process and include programmed settings for different types of parts and colors. However, higher upfront costs mean the return on investment will be faster for those printing very high volumes of parts.

When choosing a dyeing system, one should consider the part size, quantities, price, and levels of color consistency required. Dyeing systems range from a few hundred dollars to tens of thousands of dollars, and the price is often commensurate with the level of quality and consistency achievable. The four most common methods for dyeing 3D printed parts each have distinct advantages, and it’s important to set expectations regarding color quality and budget before choosing a method.

When choosing a dyeing system, one should consider the part size, quantities, price, and levels of color consistency required. Dyeing systems range from a few hundred dollars to tens of thousands of dollars, and the price is often commensurate with the level of quality and consistency achievable. The four most common methods for dyeing 3D printed parts each have distinct advantages, and it’s important to set expectations regarding color quality and budget before choosing a method.

It is essential to ensure that parts are properly cleaned prior to dyeing. Loose powder remaining on the surface of the part may absorb dye differently from sintered powder, leading to a less controlled, nonuniform dye finish, and making the part less wash-safe. We recommend cleaning parts with the Fuse Blast automated cleaning and polishing solution. This will ensure that all loose powder is removed from the part without adding additional labor time to the workflow. Alternatively, a manual media blaster can be used to ensure the parts are clean.

When cleaning parts printed with Nylon 12 White Powder, a blasting cabinet that was previously used for gray powders is not recommended as the residual powder can give the white parts a grey sheen.

It is essential to ensure that parts are properly cleaned prior to dyeing. Loose powder remaining on the surface of the part may absorb dye differently from sintered powder, leading to a less controlled, nonuniform dye finish, and making the part less wash-safe. We recommend cleaning parts with the Fuse Blast automated cleaning and polishing solution. This will ensure that all loose powder is removed from the part without adding additional labor time to the workflow. Alternatively, a manual media blaster can be used to ensure the parts are clean.

When cleaning parts printed with Nylon 12 White Powder, a blasting cabinet that was previously used for gray powders is not recommended as the residual powder can give the white parts a grey sheen.

Temperature and time have a huge impact on the final part color. Based on our tests, higher temperatures lead to a more saturated color in a shorter amount of time.

If a lighter shade is desired, consider reducing the dye solution temperature to 70 °C or lower. At higher temperatures, saturation can occur extremely quickly, leaving very little margin for deviation and potentially resulting in variance of finished parts. There is an increase in part uptake of dye over time but this trend plateaus at 20-25 minutes as the part reaches a saturation point where no more dye can penetrate the surface.

Changing Dye Bath Colors

When changing the colors of a dye bath, first drain the entirety of the current solution and dispose of it according to local regulations and the dye’s safety data sheet (SDS). Alternatively, the dye bath can also be stored in liquid form to be used at a later date, according to local safety regulations.

As a dye solution is heated and cycled, some settling can occur. Due to this, the walls and base of the tank should be wiped down after draining to ensure no cross-contamination of colors occurs. Once these two steps are completed, a rinse with clean water is recommended to make sure any remaining dye in the circulation system is removed.

Only after the machine is cleaned should a new dye solution be prepared. If multiple colors are going to be used frequently, getting multiple circulators to prevent frequent swapping is an option.

Ken Pillonel designed an easy workaround for this step, using large flasks filled with dye solution within the tank, and a rotating magnet on the bottom of them to agitate the liquid. This way, he can use different flasks for each dye color, without waiting for cooling and cleaning. To learn more about his method and this workaround, watch his video, shared at the end of the article. 

It is essential to ensure that parts are properly cleaned prior to dyeing. Loose powder remaining on the surface of the part may absorb dye differently from sintered powder, leading to a less controlled, nonuniform dye finish, and making the part less wash-safe. We recommend cleaning parts with the Fuse Blast automated cleaning and polishing solution. This will ensure that all loose powder is removed from the part without adding additional labor time to the workflow. Alternatively, a manual media blaster can be used to ensure the parts are clean.

When cleaning parts printed with Nylon 12 White Powder, a blasting cabinet that was previously used for gray powders is not recommended as the residual powder can give the white parts a grey sheen.

The equipment required to bring dyeing in-house is highly accessible. Once the equipment has been sourced, the cost of running dye trials is incredibly low. Due to this, dyeing is more cost-effective than paints and coatings in the majority of situations.

The equipment required to bring dyeing in-house is highly accessible. Once the equipment has been sourced, the cost of running dye trials is incredibly low. Due to this, dyeing is more cost-effective than paints and coatings in the majority of situations.

The equipment required to bring dyeing in-house is highly accessible. Once the equipment has been sourced, the cost of running dye trials is incredibly low. Due to this, dyeing is more cost-effective than paints and coatings in the majority of situations.

The equipment required to bring dyeing in-house is highly accessible. Once the equipment has been sourced, the cost of running dye trials is incredibly low. Due to this, dyeing is more cost-effective than paints and coatings in the majority of situations.

The equipment required to bring dyeing in-house is highly accessible. Once the equipment has been sourced, the cost of running dye trials is incredibly low. Due to this, dyeing is more cost-effective than paints and coatings in the majority of situations.

The equipment required to bring dyeing in-house is highly accessible. Once the equipment has been sourced, the cost of running dye trials is incredibly low. Due to this, dyeing is more cost-effective than paints and coatings in the majority of situations.

The equipment required to bring dyeing in-house is highly accessible. Once the equipment has been sourced, the cost of running dye trials is incredibly low. Due to this, dyeing is more cost-effective than paints and coatings in the majority of situations.

^{Dyeing is ideal for both functional prototyping and end-use production of parts with custom colors to match brand aesthetics.}