How Long Does It Take to Build a Gunpla?

EG kits are built for speed. Fewer than 60 parts, thick tabs, no tools required, most parts snap off the runner with your fingers. I have handed one to a total beginner and watched them finish in under half an hour with zero instruction beyond the manual.

The RX-78-2 EG is the classic example. It looks good straight out of the box, no paint, no nippers, no glue, and it is genuinely the fastest way to hold a finished Gundam in your hands the same day you buy it.

HG is where most builders live, and for good reason. A typical HG runs somewhere between 150 and 300 parts depending on the kit, with more articulation points, more color separation, and small pieces that actually reward using a pair of nippers instead of twisting them off the runner.

I usually plan on an evening, roughly two to four hours depending on how careful I am about nub marks and gate cuts. Newer HG kits with polycap-free joints or complex frame inside armor designs (a lot of the recent Gundam SEED and Witch from Mercury lines) run toward the longer end of that window.

RG kits pack MG level detail into HG scale, which means small parts, an inner frame, and a part count that regularly clears 300 to 400 pieces. The frame assembly alone can take as long as an entire HG build.

This is the grade where patience actually shows in the final result. Rush an RG and you will fight with tiny frame joints and thin armor panels that stress crack if you force them. Take your time and you get an articulated, screen accurate looking kit in 1/144 scale.

MG is the grade where build time stops being predictable from grade alone. A simpler MG (something like an older Gundam or Zaku reissue) can be a comfortable weekend project around 8 to 10 hours. A dense modern MG with full inner frame, multiple weapon loadouts, and layered armor can run past 20 hours once you count sprue cleanup and test fitting.

Most people split an MG across several sessions rather than one sitting. That is normal and honestly better for your hands and your patience.

PG kits are 1/60 scale with full internal frames, working pistons in some cases, and part counts that can run past 1,000. These are not a single evening project. Most builders I have talked to block out a full weekend, sometimes spread across multiple weekends, especially the first time through a PG.

If you are picking your first PG, budget more time than you think you need. The payoff is a display piece with joint articulation and detail that no smaller grade can match.

Panel lining is the single biggest add-on. A careful pass with a fine liner pen or panel line accent color can add 30 minutes on an HG and well over an hour on an MG or PG, and it is worth it for how much depth it adds to the finished kit.

Painting is the real time multiplier. Even a light panel wash and a simple top coat pushes a straight build into a multi-day project once you factor in drying time between coats. Full custom painting with an airbrush turns any kit, even an HG, into a project measured in days rather than hours.

Nub and gate cleanup matters too. Nipping parts close to the runner and shaving the remaining nub flat takes real time, especially on kits with hundreds of small pieces, but it is what separates a builder's finish from a straight-out-of-the-box look.