Gunprimer Model Tools & Supplies

RASER, the name comes from combining "gate" and "eraser," and that's exactly what Gunprimer's signature tool does: removes gate marks (nub marks) from Gunpla parts without leaving a single scratch. Rivals Corner's Gunprimer collection covers that Raser line alongside Balancer, Grida, panel line guides and runner clips, all built around achieving a genuinely professional finish. Free tracked UK shipping applies on orders over £99.

A Scratch-Free Finish, By Design

RASER, Gunprimer's own name for it, literally combines "gate" and "eraser." That's the whole idea: remove a kit's gate marks (the little nubs left where parts connect to the sprue) without leaving a scratch behind, using tempered glass and what Gunprimer calls Super-Nano Technology. Rivals Corner's collection covers that Raser line alongside Balancer polishing tools, Grida sanding kits, panel line guides and runner clips, everything built around the same finishing philosophy.

Sand a gate mark with the Raser and the surface actually turns glossier than before you started, not duller. Follow with Balancer to even out that gloss level, then Recover to restore the original finish. Skip a step and the surface can look patchy under paint. Follow the full three-step process and the seam genuinely disappears.

Which tool's worth starting with? Gunprimer Raser Plus is the exact product Rivals Corner already ranks #1 for organically, a heavier-duty version built for thick gate marks. Gunprimer Grida [Starter Kit] bundles sanding essentials into one set if you're building your toolkit from scratch. Gunprimer Runner Clip solves a smaller but genuinely annoying problem, holding sprues steady while you cut. Reddit's r/advancedGunpla and r/Gunpla both have long-running threads comparing Raser against cheaper glass-file alternatives, so you're not the only one weighing this up.

New to finishing techniques generally? Tools & Supplies covers the wider range these tools sit alongside. Building your first kit and not sure what you actually need yet? Entry Grade [EG] is the natural starting point before finishing tools become relevant.

Shop Related Collections

Frequently Asked Questions

What is Gunprimer Raser?

Raser is Gunprimer's signature sanding tool for removing gate marks (nub marks) from Gunpla parts. The name combines "gate" and "eraser." Made from tempered glass with what the brand calls Super-Nano Technology, it's designed to remove nubs cleanly without leaving scratches, unlike a standard glass file.

What's the difference between Raser, Raser Plus and Raser Origin?

Raser Origin is the original design, roughly 400 grit. Raser Plus is the heavier-duty version, 5mm thicker with a stronger grip, aimed at thick gate marks at 220 grit. Both use the same scratch-free approach, Plus is simply built for tougher jobs.

Do I need the whole Gate Remover Set, or just the Raser on its own?

For clear parts, Gunprimer's own guidance says the Raser alone is usually enough. For coloured plastic, the full three-step set (Raser, Balancer, Recover) gives a more even, consistent finish, since Balancer and Recover handle the gloss-levelling the Raser alone doesn't fully address.

Is Gunprimer worth it over a cheap glass file?

It depends how much finishing quality matters to you. Gunprimer's tempered glass and rounded edges are specifically designed to avoid the scratching that standard glass files can cause at an off-angle. Builders on forums like r/advancedGunpla generally rate it well against cheaper alternatives, though a basic glass file will still get a kit built.

Can I use Gunprimer tools on any Gunpla grade?

Yes, these are general finishing tools, not tied to a specific grade. They work the same way whether you're finishing an Entry Grade kit or a Perfect Grade build, the tools address the plastic itself, not the kit's complexity.