Large Whale MOC Build Guide: Shaping a Curved Body From Scratch
Short answer first: the trick to a large whale MOC is to build the curved frame from technic pieces first, then fill in the exterior with small bricks layer by layer. That way you get a smooth silhouette that is also strong enough to hold together. Following the method below, roughly 1,200 parts and 6 to 8 hours will get you a 55 cm humpback whale. It suits builders with at least six months of experience; complete beginners should try a smaller version first.
Step 1: Prepare the parts and tools
The humpback in this tutorial needs 1,260 parts in total. The main groups: about 150 technic pieces (beams and pins) for the internal frame; about 180 curved bricks and wedge bricks for the head and dorsal fin; about 400 plain tiles for filling in the skin. The color scheme is mainly white, dark grey and light blue, and the whole parts order lands around 350 yuan. As for tools, a brick separator and tweezers are enough, and clear tape is handy for temporarily holding structures that keep coming apart.
Step 2: Build the internal curved frame
The frame carries the weight of the whole whale MOC and absolutely cannot be skipped. Start with a technic beam running lengthwise from head to tail, 55 cm long, split into 4 sections joined with pins — make sure every section is fully engaged. Then add curved beams symmetrically on both sides of the main beam, about 20 per side, spaced 2 studs apart, to form the outline of the ribs. Note that the tail has to taper: the last two pairs of curved beams need a stronger curve so the body narrows ahead of the flukes. This step sets the whale's posture.
Step 3: Fill the body and shape the head
Once the frame is done, start filling the exterior from the head. Wrap the snout in wedge bricks and work gradually back into the body; press each layer flat with tiles so the outer wall stays level. Outline the mouth line on both sides of the head with dark grey curved bricks, about 6 cm long, which instantly makes the whale recognizable. When filling the middle of the body, keep thickness at 2 to 3 studs — too thick looks bloated, too thin lets the frame color show through.
Step 4: Build the dorsal fin, pectoral fins and flukes
Stack three curved bricks into a streamlined dorsal fin and mount it about one-third of the way along the back, tilted slightly backward for a more natural look. The pectoral fins are separate sub-assemblies: build them flat first, then attach them to the sides with hinge pieces so they can swing up and down and add play value. Build the tail flukes symmetrically from wedge bricks in a fan shape, sandwiching a layer of technic pieces in the middle to stop them sagging over time.
Step 5: Details and finishing
Last come the eyes, the light belly stripes and the blowhole. Two or three small transparent cylinders make a simple, recognizable blowhole; belly stripes can be laid with 1x2 light blue tiles at intervals. When everything is on, take one photo from directly above and one from the side to check whether the curve flows, and fill any hollows with 1x1 bricks. Total build time is about 7 hours — 3 for the frame, 4 for the exterior shaping — and it is more relaxing spread over two days.
FAQ
Q: How many parts and how much money does a large whale MOC need?
A: About 1,260 parts and a 350 yuan budget as described here. Of those, roughly 150 are technic frame parts, 180 are curved bricks, and the rest are filler and exterior pieces. To save money you can substitute parts of your own loose-parts stock for the plain tiles, which cuts about 80 yuan.
Q: How do I build the curved body so it doesn't collapse?
A: The key is the internal technic frame: the main beam in 4 pinned sections, side curved beams spaced 2 studs apart. Always frame first, fill later — stacking bricks without the frame will make a 55 cm model sag in the middle.
Q: Can a beginner build this whale MOC?
A: Six months of building experience is recommended. The hard parts are keeping the curved structure symmetrical and narrowing the tail. Beginners can build a 30 cm version first, get comfortable with curved beams, then take on the 55 cm model.
Q: What can replace curved bricks in a whale MOC?
A: If you don't have curved bricks, hinge plates plus small bricks can create a faceted curve, or you can stagger several wedge bricks. The result looks slightly worse than real curved bricks, but the parts are easier to gather and the cost drops by about 20%.
Q: How long can the finished whale stay on display? Will it fall apart?
A: With the frame reinforced as described, it can stay on display long term and will not fall apart in normal display. Avoid moving it often and keep it out of direct sunlight; if the flukes start to droop, add a technic support beam and it will stay solid for years.