Mr. Hobby Pour Type Gundam Marker Black GM301P | GSI Creos Gundam Marker

Overview

Discover a dedicated pour-type marker from Mr. Hobby designed to add precise shading to panel lines and other tight spaces. The ink flows via capillary action to emulate the subtle shadows of metal plates, grime, and dirt, giving scale models a more nuanced look. This tool is especially useful for subtle edge work and recessed details where a traditional brush might struggle to reach.

How it works and what to expect

• Capillary action delivers color into narrow grooves, producing natural-looking shadows and depth.
• Simple use: knock the pen tip on scrap paper to moisten, then touch the tip to the mold or seam to apply.
• Ink flows smoothly into recessed areas and can be smudged or blended for soft transitions.
• The protruding ink line can be erased or cleaned up with an eraser or the GM300 Gundam Marker Eraser Pen (sold separately).

This marker is compatible with bare plastic surfaces, and its design supports controlled application where you want a restrained tint rather than a broad coat. The Black variant provides a neutral shadow tone that pairs well with many color schemes.

Real-life use cases and benefits

• Enhance panel lines on kit interiors or exterior panels to simulate metallic reflections and wear without heavy weathering.
• Create grime and dirt accents in recessed areas for a more authentic model look.
• Wipe away excess ink on bare plastic with a rubber eraser for quick cleanups during construction or testing.
• Adjust shading by smearing the ink after application to achieve soft gradients or sharper lines as needed.

Usage cautions and tips

• Do not overcoat with other colors such as Mr. Color to preserve control over the effect.
• When used over painted surfaces, the ink may dissolve the base paint; test on a swatch first.
• If a coating agent is applied after painting, the ink may bleed beyond intended areas.
• On plated parts, ink interaction may affect the plating finish; use with care on metallic surfaces.

Included considerations help you plan shading and detailing with confidence, knowing you can adjust or erase where needed. This marker is a versatile addition to any builder’s toolkit for adding subtle, believable depth to models.

What you get and care notes

• Two key advantages: capillary-driven color delivery and clean erase-ability on bare plastic.
• Erasing capability is supported by the GM300 Eraser Pen (sold separately) for quick edits during builds.