¶ Wiki Article By Arcade Classroom
Spray paint hydro dipping is a great way to give 3D printed objects a marbled appearance. This technique can be used for any object – provided the surface texture can absorb color. To ensure color absorption, use sandpaper to get a suitable and smooth surface for hydro dipping. Next, tape all the parts that you don’t want to hydro dip. You can even create handles from tape to make it easier to dip your 3D printed objects.
When printing for hydrodipping it is important to consider layer height as thicker layers can become more visible after hydro dipping. For printing with FDM printers set the layer height to <0.2mm. There are no filament restrictions or requirements for hydro dipping, although some materials require more sanding for color absorption.
- Fill a large bin with water, be careful to make sure that it is deep enough to completely submerge the object you are hydro dipping.
- Next create the marbling appearance by spraying generously onto the surface of the water. Any acrylic spray paint will work; however, for best results use one with a gloss finish. Continue spraying until you are satisfied with the pattern and look of the paint.
- Make sure you are wearing gloves to prevent hydro dipping your hands. Gently dip the 3D printed object slowly into the water until it is fully submerged. Angling your object will help to ensure the color and pattern adhere to your object.
- Push away all remaining paint on the surface with your other hand to prevent a second coat of paint from distorting the original pattern.
- Allow your object to dry overnight, be careful not to handle it until the paint is no longer tacky.
- Using a spray lacquer or other polyurethane finish to protect the hydro dipped finish.
[1] Instructables Hydro Dip Painting
[2] Best Paint to Use for Hydro Dipping
[3] Hydro Dipping and Hydrographics