How to Paint Your 3D Prints

If you’re an engineer or product designer creating concept models, a prop or set designer, artist, or an educator looking to add incorporate a bit more creativity into your classroom 3D printing activities, painting your models can be a great solution.

In this tutorial, we’ll show you how to create a nearly automotive quality paint job on any of your 3D printed objects.

Working time will vary depending on your model. Including drying time, the process shown took us about 6 hours from start to finish.


Step 1: Prepare & Print Model

When preparing models for painting in MakerBot Print, keep in mind how your print settings will affect the quality of your paint job.

Consider: Print settings, print orientation, number of build plates


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Surfaces printed in the Z axis will have the smoothest surface finish.


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Printing models in 100 micron layer resolution will result in a slightly smoother surface finish, but will take significantly longer.


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If possible, avoid placing support material in places you intend to paint as they will require more post processing to remove completely.


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Find more detailed information here on gluing and sanding.


Step 5: Primer/Filler

Whether you have chosen to sand your model and apply filler or you are simply painting a rough PLA model printed at high resolution, a few layers of primer/filler will fill any small surface imperfections before painting.

Primer filler is a high build spray filler that comes in aerosol form and can be purchased at most local hardware stores.


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Before spraying remember to wear gloves, eye protection, and a respiratory mask.


Be sure to:

Shake well before use
Use wide strokes beginning and ending in space outside of the model
Hold the can 10-12 inches from the model
Paint in thin layers using a misting technique

Avoid:

Painting in thick layers
Holding the can in any spot for a long time
Holding the can too close to the model


Step 6: Allow Model to Dry

Once you’ve sprayed 2-3 layers of primer/filler, allow your model to dry for 30-40 minutes.


Step 7: Sand

A. Lightly sand your model with 1000 grit sandpaper (dry). This will smooth the surface of the model as the primer filler tends to create a rough surface texture similar to sandpaper.

B. Evaluate for quality.

C. If there are still surface imperfections you would like to smooth, continue to apply consecutive layers of primer/filler, and sand.

Once you are happy with the model surface, move on to painting.


Step 8: Paint

When choosing paint, you typically have a large degree of freedom as to which color and type of paint you use. Make sure to pick something that adheres well to plastic.

A. Choose a paint


B. Test for color in an inconspicuous location before painting the entire model

C. Let the paint sit overnight to cure


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Typically the paint will be dry to touch within an hour or so, and ready to polish within 24-48 hours.


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If you’d like to protect the surface of your painted model, you can also apply a thin clear coat at this point.


What's Next

Visit one of our other applications pages for tips on how to take your print even further.

We recommend that you visit our pages on:

Gluing
Sanding
Inserts

Last but not least, remember to share your work with us on Thingiverse and social media @MakerBot.

We can’t wait to see what you make!


Attribution

Hair Dryer Shell
Ferro
10/2/2015
https://grabcad.com/library/hair-dryer-shell-1

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