Tamiya's Liquid Surface Primer is perfect for smoothing over small scratches, holes, and gaps, and can be easily applied with a modeling brush. Furthermore, it can be thinned using separately available Tamiya Lacquer Thinner and applied with an airbrush, making this a very versatile tool for craft and hobby use. White color means it will not interfere with light colored paint finishes. Comes in a 40ml glass bottle.
Tamiya White Liquid Surface Primer ( 40 ml )
Tutorials — Blog — Child of Mecha
Vallejo 20ml Tube Plastic Putty
Tamiya, Putty -Basic Type- Texturing Tutorial
Woodgrain Painting Technique by Eric Larson
Mikey's Modeling Pages
6 Ways to Use Primer When Painting Gunpla - Gunpla 101
X marks the Gundam Spot: The Importance of Sanding and Priming
1/35 M4 Sherman detailing tutorial: How to add cast textures and Weld seams