Jump to content
Ultimaker Community of 3D Printing Experts
Shipbrook

Salt Masking to simulate rust or flaking paint

Recommended Posts

Apparently this is a well-known weathering technique amongst the scale modeling community, but I only recently learned of it and gave it a try (and it worked pretty well), so I figured I'd pass it along for anyone else who'd never heard of it either.

With salt masking, you start off by painting your object a rusty color (varying the tone for best results) and letting it dry.

Then, using a paintbrush, you moisten areas that you want to have rust on them. After moistening each spot, sprinkle coarse salt on it (it should stick). For heavy rust, cover it completely; for small rust flakes, sprinkle the salt lightly.

5a331ceee9928_SaltMask.thumb.jpg.12d26debe31874b7e7d2fa17634ce1d0.jpg

Allow the model to completely dry.

Then airbrush your intended colors over the model, painting salt and plastic alike. Once the final coat is dry, simply brush off the salt. Everywhere the salt was covering the surface (and therefore preventing the paint from reaching it), the "rust" will show through:

StimpackOnConcrete-Smaller.thumb.jpg.9b06444cec8d6ac621fd95bc7756be33.jpg

A similar effect can be used to simulate metal showing through flaking paint; just use a metallic paint as the base coat, rather than rust colors.

(Stimpack model printed in PLA on an Ultimaker 2.)

5a331ceee9928_SaltMask.thumb.jpg.12d26debe31874b7e7d2fa17634ce1d0.jpg

StimpackOnConcrete-Smaller.thumb.jpg.9b06444cec8d6ac621fd95bc7756be33.jpg

  • Like 4

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

  • Our picks

    • Ultimaker Cura | a new interface
      We're not only trying to always make Ultimaker Cura better with the usual new features and improvements we build, but we're also trying to make it more pleasant to operate. The interface was the focus for the upcoming release, from which we would already like to present you the first glance. 
        • Like
      • 130 replies
    • "Back To The Future" using Generative Design & Investment Casting
      Designing for light-weight parts is becoming more important, and I’m a firm believer in the need to produce lighter weight, less over-engineered parts for the future. This is for sustainability reasons because we need to be using less raw materials and, in things like transportation, it impacts the energy usage of the product during it’s service life.
        • Like
      • 12 replies
×

Important Information

Welcome to the Ultimaker Community of 3D printing experts. Visit the following links to read more about our Terms of Use or our Privacy Policy. Thank you!