Transparent Resin Color Dyeing Service

This process is an exclusive combined post‑treatment for Transparent 8001 Resin. It must be paired with oil spraying; the process sequence is oil spraying first, followed by thermal color dyeing, which is different from conventional process by directly immersing bare parts for dyeing.

After parts are coated with clear oil, they are thermally immersed in a constant‑temperature dye bath. Dye penetrates through the semi‑permeable oil layer to achieve coloration.

• Applicable only to 8001 fully‑transparent SLA resin; not compatible with other materials.
• Only whole‑part single‑color dyeing is supported. Partial / selected‑area dyeing and multi‑color effects on a single part are not achievable.
• The maximum overall outer dimension of the part shall be ≤200 mm along X, Y and Z axes.
• Seven standard colors are currently available: black, green, purple, brown, red, yellow and blue.

Complete Process Flow

SLA printing of 8001 parts → support removal → sequential wet fine sanding (320‑600‑800 grit) → blasting → oil spraying → color dyeing immersion → rinsing with room‑temperature clean water → air‑drying → visual color inspection.

Surface Finish

1. Finished parts retain the transparent texture of 8001 resin and present an overall translucent single‑color effect, which is visually distinct from fully opaque solid‑color sprayed finishes.
2. The outer layer is clear oil, delivering a smooth, glossy surface and fine tactile feel.
3. All exposed surfaces of the part, including grooves and inner cavities, will be dyed with the same color. Partial retention of original transparent areas cannot be realized.
4. Color depth can be adjusted within a certain range by modifying dye concentration and immersion time.

Process Advantages

1. Dye does not come into direct contact with bare resin substrate, which reduces the risk of swelling and corrosion of transparent resin caused by high‑temperature dye solution. The dimensional stability and intrinsic transparency of parts are better preserved.
2. Color penetrates into the oil layer. Compared with conventional surface painting, minor surface scratches are less likely to expose white substrate, providing improved wear resistance.
3. It delivers colored appearance while maintaining light‑transmitting property, suitable for translucent prototypes and decorative display parts.

Notes

1. Color dyeing must be paired with oil spraying. Color dyeing can only be selected when the post‑treatment option of oil spraying is enabled for 8001 resin.
2. Only whole‑part single‑color dyeing is supported. Selected‑area partial dyeing, multi‑color parts and partial transparent retention are not available.
3. Dimensional constraint: Parts for color dyeing shall not exceed 200 mm along X,Y and Z axes.
4. Reasonable color variation may occur, affected by oil film thickness, dye temperature, immersion time and other factors. Only color‑range consistency can be guaranteed; color difference may exist between batches.