Gunpla Tools Guide: Nippers, Sanding, Decals and More (2026)

Gunpla tools start with one nipper and grow from there, one finishing step at a time. This guide is our hub for every tool beyond the box: nippers in depth, knives and mats, sanding, stickers and water decals, glue, panel lining and top coat. Specs come from the makers' pages where they exist, otherwise from shop listings and Q&A answers, labeled as such; US prices are shop listings we read on October 11, 2026. We have not tested these tools ourselves; where builders' opinions appear, they are quoted from product pages.

TL;DR: Buy a nipper first: Bandai's Entry Nipper was $12 at Newtype. Add $11.50 Kamiyasu sanding sticks and a $3.50 GM01 marker and you have a $27 kit. Single-edged nippers like GodHand's PN-120 ($49.34) and SPN-120 ($59.95 to $61.75) come later, with strict cutting limits. Snap-fit Gunpla need no glue. Knives, decal aids and top coat are finishing upgrades.

A generic side cutter, the tool family Gunpla nippers belong to. Photo: CSonic / Wikimedia Commons, CC BY-SA 3.0

Key Takeaways

• Start with a nipper. Bandai's assembly tips say some items, including Entry Grade, need no tools; for an HG, USA Gundam Store's listing says a hobby nipper is required.
• Price ladder for nippers: $12 (Bandai Entry Nipper), $48 (Tamiya 74123), $49.34 (GodHand PN-120), $59.95 to $61.75 (GodHand SPN-120).
• Read the limits. GodHand rates its single-edged nippers for 3 mm or less on standard kit plastic.
• No glue needed for snap-fit kits; cement is for modifying.
• Finishing is optional: panel lining and top coat each have their own guide below.

Overview: the Gunpla tools you need, in build order

Most builds follow the same order: cut parts off the runner, clean the leftover nub, mark the details, add stickers or decals, and optionally seal it all. The tools line up with those steps.

Diagram: PlamoDesk. Sources: Bandai assembly tips, GodHand and Newtype, Tamiya, GSI Creos FAQ, USA Gundam Store.

Bandai's own assembly tips start with "Before beginning assembly, check the set contents and read the assembly manual for a smooth process." They name three tool jobs: cutting, sanding ("For more clean finish, you can use sand the parts to remove rough edges") and tweezers for stickers ("It's easier to attach smaller decals with tweezers"). The rest of this guide expands those three jobs, then covers finishing.

If you only want the first-purchase list, the beginner tools guide linked under "More Tool Guides" below is the short version.

Gunpla nippers: the one tool you need

A nipper is a small cutter for plastic runners. It cuts the gate where a part meets the runner, and, as one Commons photographer puts it, the cut "leaves a plastic nub that has to be cleaned up."

Which Gunpla tools come first: Bandai Entry Nipper ($12)

Newtype had the Entry Nipper in stock at $12 on October 11, 2026. The box contains one nipper. It is the cheapest cutter we priced by a wide margin, which makes it the right first buy: it teaches you how you cut before you spend four to five times as much on a premium cutter.

Single-edged: GodHand PN-120 and SPN-120

GodHand sells two single-edged nippers through its US store.

• PN-120 "Blade One Nipper" (GodHand USA): "Best for your first single edged nipper. Protection Cap is included." Cutting capacity: "3mm or less (PS, PP, ABS, PE resin) 2mm or less (transparent, semi-transparent)". The page data showed $49.34.
• SPN-120 "Ultimate Nipper" (GodHand USA): "Ultra thin single edged! Ultimate Sharpness!" Cutting capacity: "3mm or less (PS, PP, ABS, PE resin) 1mm or less (transparent, semi-transparent)." It was $61.75 on GodHand USA's page data and $59.95, in stock, at Newtype.

Notice the clear-plastic limit: the thinner SPN-120 is rated for 1 mm on clear parts, half the PN-120's 2 mm.

Side cutters: Tamiya 74035 and 74123

Tamiya sells side cutters for plastic. The 74035 Sharp Pointed Side Cutter has thinner, sharper-pointed blades than Tamiya's 74001, made to be "used upon sprues with finer parts and less clearance, such as details on ship models." The 74123 "is designed to remove plastic model parts from their sprues"; Gunpla Style had it at $48 on October 11, 2026.

Graphic: PlamoDesk. Data: Newtype, GodHand USA, Gunpla Style, Tamiya and GodHand product pages, October 11, 2026.

Nipper care

Premium nippers come with rules. Newtype's SPN-120 listing lists them:

• It is designed only for plastic model runners: "do not use on metal, polycarbonate, or resin, as this may damage the blade."
• "Avoid twisting or cutting thick gates in one motion; instead, cut in two stages for best results."
• "store with the blade guard attached when not in use."
• "Keep out of reach of children and handle with care to prevent injury."

The same habits protect a $12 nipper.

Knives and cutting mats

A hobby knife trims what the nipper leaves. Tamiya's Modeler's Knife (74040) is "a medium size art knife, which comes in handy during plastic model construction." Tamiya says its "sharp and pointed 0.45mm thickness blade is ideal for intricate cutting, curving and shaving of plastic," and the knife "Comes with 25 spare blades." Replacement blades are sold as item 74075, 25 pieces.

Cut on a mat, not the table. Tamiya's Cutting Mat α (74144) "is made of semi-transparent blue resin with minimal odor." Its "3-ply composition features an internal hard layer sandwiched by softer outer layers, increasing knife blade longevity." The surface is 145 x 450 mm, 2 mm thick. Tamiya's page notes the information is current as of September 5, 2018.

GODEEPER: Choosing which kit to use these tools on? Gunpla grades explained →

Sanding: sticks, sponges and grits

Sanding removes the nub and any stress mark at the gate. Three options cover most builders:

• Kamiyasu soft sanding sticks. Newtype listed the Premium Ultra Precision Soft Sanding Stick full set (#400 to #7000) at $11.50, in stock. An answer in the page's Q&A says: "4 sticks per pack. Each stick is double-sided."
• Tamiya Sanding Sponge Sheet P320 (87163). Tamiya says it "features aluminum oxide particles and is backed on 5mm-thick sponge," is useful "when smoothing off cut joints," "can be cut into smaller sizes using a modeler's knife, and is OK to use for wet sanding." One sheet is 114 x 140 mm.
• GodHand KB10000 sanding sponges. $10 for five 2 mm sponges at Gundam Planet on October 11, 2026, as listed in our beginner tools guide.

Stickers, water decals and tweezers

Kits like the HGUC RX-78-2 come with a sticker sheet: its page lists a "Foil Seal ×1". The RG and MG RX-78-2 pages list realistic decals instead, and Bandai also sells decals separately.

Tweezers are the one marking tool Bandai names: "It's easier to attach smaller decals with tweezers."

Tweezers with slanted and flat tips. Photo: Evan-Amos / Wikimedia Commons, public domain.

Water decals are sold as separate items too. Bandai's December 2026 schedule includes the HG 1/100 VF-31F Siegfried (Messer Ihlefeld Use) Water Decals at 750 yen in Japan before tax, "A dedicated water-transfer decal designed to faithfully recreate the in-show version". The contents line reads "Waterslide Decal ×1," and the page adds: "Plenty of caution marks are also included."

Decal softener helps water decals on curves. Newtype describes Mr. Mark Softer (MS231) as "a softening agent for slidemarks. It has the effect of closely adhering slidemarks to curved surfaces." It was $4.99, out of stock, on October 11, 2026. An answer in the same page's Q&A: "On smooth surfaces, it can reduce silvering but is not strictly necessary."

Do you need glue?

Not for snap-fit Gunpla. Bandai's English beginner pages put it under "NO GLUE": "All of the parts can be easily put together without any glue." USA Gundam Store's listing for the HGUC RX-78-2 says: "No glue required for assembly, a hobby nipper is required to remove parts from runners." Its MG listing says the same in three words: "Snap-fit, no glue."

Cement is optional. Tamiya's Cement (87003) "is for use in assembling plastic (styrene) models" and holds 40ml. Its Extra Thin Cement (87038) is pitched as "No crevice is too small for this flowing adhesive," in a "40ml bottle" with "a pointed brush on the cap."

Finishing: panel lines and top coat

Two finishing steps have their own guides.

Panel lining darkens the molded lines. The cheapest route is a $3.50 GM01 marker and an eraser; the paint route is Tamiya's enamel accent color, which a fan tutorial warns can make bare plastic brittle if you use too much. Our panel-lining guide covers both, step by step.

Top coat is a clear spray that evens out the finish. GSI Creos, whose Mr. Hobby product list includes several top coats, says in its FAQ that white fogging is likely on hot, humid days, and separately that too much matte coating turns white, so you should "apply thin coat multiple times." Our top coat guide compares the cans and the shipping rules for aerosols.

A $27 starter set

Diagram: PlamoDesk. Data: Newtype and Gundam Planet listings, October 11, 2026.

At the prices we saw, a $12 Entry Nipper, $11.50 sanding sticks and a $3.50 GM01 marker come to $27. That covers cutting, cleanup and panel lines for your first several kits. Add tweezers when you reach small stickers, and a knife and mat when nubs start to bother you.

What builders say

These answers come from the questions sections of Newtype product pages, read that day.

• On the GodHand SPN-120, ZeonicTitan (July 4, 2023): "Always make perpendicular cuts as side cuts puts undue stress on the blade and may cause it to snap."
• On the same page, Billy (February 20, 2022): "Sharpening nippers may improve near term effectiveness at the cost of shortening the tool's lifespan."
• On the Kamiyasu sanding sticks, ZeonicTitan (January 5, 2023): "These are semi-rigid. The backing has a little bit of give, but it won't contour to round surfaces."

The first fits the listing's own warning against twisting or cutting thick gates in one motion. The third is a useful buying note: the sticks are for flat surfaces.

Analysis: where to spend and where to save

Put the prices next to the makers' limits and a clear order appears.

1. Spend little on the first nipper. $12 buys a cutter that does the job while you learn not to twist on thick gates.
2. Spend next on cleanup, not a better nipper. $11.50 of sanding sticks smooths the nubs that every cut leaves; a $49 to $62 nipper changes only the cut itself.
3. Buy the premium nipper when your habits are set. GodHand's limits (3 mm, 1 to 2 mm on clear parts) and Newtype's care list reward a careful cutter.
4. Skip glue unless you plan to modify kits.
5. Add finishing tools by project. Decal softener only matters once you use water decals; top coat only once you want an even finish.

Our take

On the makers' specs and the October 11 prices, the best Gunpla tools plan is cheap first, careful later: an Entry Nipper, sanding sticks and a GM01 marker for $27, then a single-edged nipper once you cut in two stages without thinking. The PN-120 is GodHand's own pick for a first single-edged nipper and cost $10.61 to $12.41 less than the SPN-120 on October 11. Tweezers, a knife and a mat are the next three buys; glue is optional for snap-fit kits.

Finishing Guides

• How to Panel Line Gunpla: Markers, Washes and Cleanup: marker and enamel-wash methods, cleanup, and what not to mix.
• Best Gunpla Top Coat for Beginners: Matte, Gloss or Semi: four matte cans compared, plus how to spray without fogging.

More Tool Guides

• Gunpla Tools for Beginners: What to Buy First (2026): the short first-purchase list, from a $12 nipper up.

How we checked this

On October 11, 2026 we read Tamiya's official pages for its side cutters, Modeler's Knife, Cutting Mat, sanding sponge sheet and cements; GodHand USA's PN-120 and SPN-120 pages; Bandai's English assembly tips and the VF-31F water decal item page; and Newtype, Gundam Planet and Gunpla Style listings for prices and stock. GodHand USA prices are from page data. Tamiya USA's site blocked automated reads, so no Tamiya MSRPs are quoted. The builder quotes are from Newtype product pages. We did not test the tools.

Frequently Asked Questions

What Gunpla tools do I actually need? Just a nipper for most kits. Bandai's assembly tips say some items, including Entry Grade, need no tools at all, and USA Gundam Store's HGUC listing says a hobby nipper is required to remove parts from runners. Bandai's Entry Nipper was $12 in stock at Newtype on October 11, 2026.

Is a single-edged nipper worth it? Later, not first. GodHand sells the PN-120 as the best first single-edged nipper, at $49.34 on its US site, and the thinner SPN-120 at $59.95 to $61.75. Both have cutting limits of 3 mm or less on standard kit plastic, and Newtype's SPN-120 listing warns against twisting or cutting thick gates in one motion.

Do I need glue for Gunpla? No, not for snap-fit kits. Bandai's English beginner pages say all of the parts can be easily put together without any glue, and USA Gundam Store's HGUC RX-78-2 listing says the same. Tamiya sells plastic cement for styrene models, including an Extra Thin Cement in a 40ml bottle with a pointed brush, for builders who want to join or modify parts.

What is the difference between stickers and water decals? Stickers come on a seal sheet (Bandai lists a foil seal with the HGUC RX-78-2); water decals are water-transfer markings. Bandai sells water decals as separate items, such as the HG 1/100 VF-31F Siegfried water decal set at 750 yen in Japan. Mr. Mark Softer, $4.99 at Newtype, helps decals sit on curved surfaces.

What sanding tools are best for Gunpla? Anything fine and flat for nubs. Newtype had Kamiyasu soft sanding sticks, a full set from 400 to 7000 grit, at $11.50 on October 11, 2026; a Q&A answer there says four double-sided sticks per pack. Tamiya's P320 sanding sponge sheet is 5 mm thick and safe for wet sanding, according to Tamiya.

Do I need a hobby knife for Gunpla? It helps with leftover nubs. Tamiya's Modeler's Knife has a 0.45 mm blade that Tamiya says is ideal for intricate cutting, curving and shaving of plastic, and it comes with 25 spare blades. Use it on a cutting mat; Tamiya's 3-ply mat has a hard inner layer that extends blade life.

Related Reading

• Best Beginner Gunpla Kits by Budget: kits to practice these tools on, under $20, $40 and $70.
• HG vs RG vs MG: how part counts and markings change from grade to grade.
• How to Spot Bootleg Gunpla: cheap tools and cheap kits share the same marketplace risks.

References

• Bandai Hobby: assembly tips and HG VF-31F Siegfried Water Decals item page
• Tamiya official pages: 74035 side cutter, 74123 side cutter, 74040 Modeler's Knife, 74144 Cutting Mat, 87163 Sanding Sponge Sheet, 87003 Cement, 87038 Extra Thin Cement
• GodHand USA: PN-120 and SPN-120
• Newtype: Entry Nipper, GodHand SPN-120, Kamiyasu sanding sticks, Mr. Mark Softer
• USA Gundam Store: HGUC RX-78-2 and MG RX-78-2 Ver.3.0 listings
• GSI Creos Mr. Hobby FAQ