How do you fix mistakes and imperfections on ABS prints after sanding and painting?

1 Choose the right tools

Before you start fixing your ABS prints, make sure you have the right tools and materials. You will need sandpaper of different grits, from coarse to fine, to remove excess material and smooth out the surface. You will also need a filler, such as epoxy, putty, or ABS glue, to fill in any gaps or holes. A primer is essential to prepare the surface for painting and prevent cracking or peeling. And of course, you will need paint, preferably acrylic or enamel, that matches your desired color and finish.

2 Sand carefully

Sanding is a crucial step to fix mistakes and imperfections on ABS prints, but it can also cause more damage if done incorrectly. To avoid over-sanding or creating new scratches, follow these guidelines: start with a low grit sandpaper and work your way up to a higher grit, using circular motions and light pressure. Sand evenly and avoid sanding too much in one spot. Use a damp cloth or a soft brush to wipe away any dust or debris. Check your progress frequently and stop when you are satisfied with the smoothness and shape of your print.

3 Fill in the gaps

If your ABS print has any gaps, holes, or cracks, you will need to fill them in with a suitable filler. Depending on the size and location of the imperfection, you can use epoxy, putty, or ABS glue to create a smooth and seamless surface. Apply the filler with a spatula, a toothpick, or a syringe, depending on the precision and amount needed. Smooth out the excess filler with a wet finger or a damp cloth. Let the filler dry completely before sanding it lightly with a fine grit sandpaper.

4 Prime before painting

Priming your ABS print is an important step to ensure a good adhesion and coverage of the paint. Priming also helps to hide any remaining imperfections and create a uniform surface. Choose a primer that is compatible with ABS and your paint type, and follow the instructions on the label. Spray or brush the primer evenly over your print, covering all the areas that you want to paint. Let the primer dry completely before applying the paint.

5 Paint with patience

Painting your ABS print can be a fun and creative way to customize and enhance your project, but it can also be frustrating and messy if done hastily or poorly. To avoid common painting problems, such as drips, bubbles, or uneven colors, follow these tips: shake or stir your paint well before using it. Apply thin and even coats of paint, letting each coat dry before adding another one. Use a spray can, an airbrush, or a fine brush, depending on the size and detail of your print. Follow the directions on the paint label for curing and sealing your print.

6 Enjoy your result

After following these steps, you should have a smooth and flawless ABS print that looks like a professional product. You can admire your work, show it off to your friends, or use it for your intended purpose. You can also experiment with different techniques and effects, such as weathering, glossing, or decaling, to add more realism and character to your print. The possibilities are endless with ABS prints and some sanding and painting skills.

7 Here’s what else to consider

This is a space to share examples, stories, or insights that don’t fit into any of the previous sections. What else would you like to add?