UFO MOC Build Guide: SNOT Disc Body and Glowing Cockpit
The short version: the hard part of any brick UFO is turning square studs into a smooth disc. That means SNOT — studs pointing sideways — a ring of 2x2 bricks with side studs around the rim, a transparent glowing cockpit stacked on top, and landing gear underneath. Everything else is refinement.
Disc Body: A Clean Curve with SNOT
The disc is where most UFO builds fall apart, because you cannot fake a circle with studs-up bricks. Use SNOT (Studs Not On Top). Start by ringing the rim with 2x2 bricks that have studs on the side, with those side studs facing outward. Hang 1xN smooth tiles horizontally off those studs, then repeat ring by ring outward, and the silhouette closes into something close to a true circle.
Layering matters as much as the outline. Each ring further out should be one layer thinner than the one inside it, so the disc tapers from thick at the centre to thin at the edge. That taper is what reads as a hovering craft rather than a flat plate. If you want a cleaner edge, close the outermost ring with curved pieces such as 1x4 curved bricks — the arc looks rounder and catches a highlight under display lighting, which does a lot of the sci-fi work for you.
Glowing Cockpit: Layering Transparent Parts
The cockpit is the detail people remember. Build it like an onion: an outer 4x4 hemispherical dome in trans-orange or trans-light blue, a 2x2 trans-yellow brick in the middle as the core, and a light source at the very centre.
There are three ways to light it: a light brick, an LED string, or transparent parts combined with reflective paper. If you use a light brick you already own, seat it inside a ring of 1x1 bricks with holes so the light spreads evenly through the dome instead of blowing out one hot spot. Then wrap the cockpit with a ring of trans 1x2 bricks as portholes — the dome and the portholes together give you a two-layer glow. In daylight it reads as clear glass; with the room lights off it reads as a visiting craft.
Underside and Landing Gear
Do not leave the bottom as a bare flat plate. Add three things.
First, a recessed underside: invert a 6x6 or 8x8 plate, sink the middle by half a brick, and draw the edge inward with a ring of slope pieces to get the classic bowl-shaped belly.
Second, landing gear: three legs made from 1x1 round bars topped with 2x2 round plates, attached to the base through hinge pieces. Hinges let the legs fold, so the model can either hover on a stand or sit solidly on a shelf.
Third, a hidden light exit: leave a 2x2 opening in the centre of the base so the light brick throws a beam straight down, like a tractor beam. Keep the legs symmetrical — 120 degrees apart — and use a turntable piece to locate them; it is the easiest way to get the spacing right.
Colour Scheme: Silver-Grey Body with Neon Accents
The classic brick UFO palette is a silver-grey body with fluorescent accents. Alternate light grey and dark grey in layers to suggest metal panelling. Use trans-blue or trans-orange for the portholes and cockpit so the warm and cool tones contrast against the grey. Add a ring of 1x1 round plates in neon green or neon yellow along the top as navigation lights, and scatter a few trans-red bricks around the rim.
For a harder-edged look, add 2x4 wedge plates across the disc as armour ridges, or 1x2 printed tiles as instrument detail. Keep the whole model to three or four main colours — too many and the disc starts to look cluttered rather than fast.
FAQ
How do I build the disc of a brick UFO? SNOT is mandatory: ring the rim with 2x2 bricks with side studs, clip plates onto those side studs, and close the outline layer by layer. Square bricks stacked studs-up will never give you a smooth disc.
How do I make the glowing cockpit? Work in layers. A large transparent curved piece forms the canopy, a fluorescent or light-blue transparent layer sits inside it, and a light brick goes at the bottom. Stack all three and the light diffuses into a hovering glow.
How do I decide the colour scheme? Silver-grey body, fluorescent accents. Light grey and metallic silver for the disc, trans light blue for the canopy, and small amounts of neon green or neon orange at the edges. Keep accent colours to about a tenth of the surface so the UFO stays clean.
How do I build the underside and landing gear? Start with a load-bearing cross frame underneath, then build three or four legs that can fold up. Connect the legs with hinge pieces so they retract, and keep them all the same length when deployed or the craft will sit crooked.
Three problems come up again and again: an out-of-round disc, light leaking out of the cockpit, and a centre of gravity that tips. The disc goes oval because SNOT brick spacing and tile lengths do not match — sketch a circle on a baseplate and count bricks per ring before you commit. Light leaks because there is a gap between the light and the dome; raise the light on a 1x1 transparent brick and it stops. An unstable model is usually a weight problem: put the heaviest light brick and battery box directly over the centre of the disc.
When it is finished, two display options work well. A clear stand lifting the craft about 10 cm with lighting underneath sells the hover. Or run a thin transparent rod up from the base as a hidden support — from most angles you will not see it at all. Once yours is built, post the plans on BrickPlan; there are plenty of sci-fi builders in the community, and you may end up assembling a small alien fleet.