Hong Kong · Est. 2026 · Prototype stage

Fiction,
function

We take props that were designed to look right for one shot — a ring that only had to glow, a watch that became a repulsor, a JARVIS that provides assistance — and engineer them into objects you can actually carry, charge and drop.

MK-I Lanterns RingMK-II WebshooterMK-III HUD OrnamentMK-IV Repulsor Watch
Fig. 01 — Repulsor lens assemblyScale 2:1
04
Units in development
±0.05
mm target tolerance
02
Disciplines — mechanical, electronic
17
Co-founders' age
01 — The premise

A prop only has to survive one shot. A product has to survive Tuesday.

Every screen prop is a compromise. It is hollow, it is glued, it is painted to read correctly from one camera angle — and it falls apart the moment somebody picks it up. That is not a flaw. It was never asked to do anything else.

We start where the film stops. Each unit gets a real mechanism, a real power source and a real reason to leave the shelf — then it gets carried, dropped and recharged until the fiction is gone and only the function is left.

02 — The units

Four props. Four problems to solve.

Every figure below is a design target, not a launch spec. Numbers move as prototypes fail.

MK-IPrototype 03

Lanterns Ring

On screen it only had to glow. Rebuilt as a ring with a real 60-lumen emitter and a four-night cell, so the light you point at something actually lights it.

Output
60 lm
Cell
90 mAh
Runtime
4 nights
Body
Gr5 titanium

Turned titanium blank, machined light channel, pogo-pin charge dock, polycarbonate diffuser pressed into the bezel.

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MK-IIPrototype 01

TASM Webshooter

A wrist prop that has to actually deploy something. Cartridge-fed tether spool with an adjustable friction brake and a tool-free band — fires six metres of line you can wind back in.

Tether
6 m Dyneema
Cartridge
12 g swap
Brake
Manual drag
Body
6061 / steel

Machined housing, four-stage spool with friction brake, sprung actuator, ballistic-nylon band with tool-free buckle.

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MK-IIIConcepted / CAD

HUD Jarvis Desk Ornament

The interface that lived on a film screen, built for a desk. A small holographic disc that floats your calendar, weather and a live clock above a machined bronze base.

Display
5 in HUD
Feed
Wi-Fi 2.4
Power
USB-C 15W
Base
Machined bronze

Bronze base, glass dome over a rotating reflector array, single machined dial for brightness, silent thermal path.

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MK-IVBench testing

Iron Man Repulsor Watch

A repulsor that has to tell the time first. Three watts of focused light on a gesture-controlled emitter, with a magnetic quick-release so it comes off the band in one motion — and a real watch face when the light is off.

Emitter
3W LED
Runtime
14 h
Movement
Quartz
Body
6061 aluminium

Machined housing with a diffused polycarbonate lens, magnetic quick-release, haptic click on every gesture.

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03 — Engineering

Two disciplines, one object.

Mechanics

01
  • Turned 6061-T6 aluminium bodies, with brass and Grade 5 titanium where wear actually happens.
  • Every joint is a real thread, bearing or detent. Nothing load-bearing is held by glue.
  • Mating faces held to ±0.05 mm, then hand-finished so the seals close on the first turn.
  • Parts are designed around the machines I can reach: lathe, mill, printer, hand tools.

Electronics

02
  • Constant-current LED drivers, so output stays flat instead of dimming as the cell drains.
  • USB-C PD in and out — the device charges, and can hand power back to your phone.
  • IMU-driven gesture control with haptic feedback, so nothing needs a screen.
  • Cells and chips sit in replaceable modules. A dead battery should never kill the object.
Design target: 10,000 cycles per mechanism2 m drop, six faces40 → 45 °C thermal ceiling
04 — Process

Screen to pocket, in four passes.

01

Screen study

Rewatch the scene, freeze the frames that matter, and write down what the object was doing on set versus what a real one would need to do.

02

CAD

Parametric models with real fasteners, real wall thicknesses and real clearances. If a part cannot be machined, the model is wrong — not the workshop.

03

Bench

Thermal, drop, water and drain tests on the actual prototype. A spec sheet has never once been the thing you put in your pocket.

04

Carry

Two weeks in a school bag, every day. If it becomes annoying, it goes back into CAD and the cycle starts again.

Fig. 04 — Bench, 01:40, school night
05 — Co-Founders

Three of us. Seventeen. In a school workshop.

We build Offscreen between IB classes at Diocesan Boys' School. It started with a prop none of us could stop looking at: the ring that was never going to open anything, and the question of whether it could.

Design Technology gave us the CAD and the lathe access. The rest is late nights, bench tests, and a drawer of prints that were 0.3 mm too big.

Right now there is no shop, no factory and no investors. There are four objects that have to actually work before any one of them gets sold — and a log of every failure on the way there.

DBS · IB DiplomaDesign TechnologyHong Kong
06 — Pitch a prop

What should we take off the screen next?

Every unit on this page started as someone pointing at a film and saying "I want that, but real." Tell us which one, why it matters to you, and what it would have to do to earn its place on your desk or wrist.

  • — One prop per entry, as specific as you can make it
  • — The story matters as much as the mechanism
  • — Shortlisted ideas get CAD time on our bench
07 — Request a unit

First refusal, before anything is for sale.

Nothing ships yet. Add your name to the list and you get the bench notes as each unit clears testing — plus the first chance at the small initial run.

  • — No newsletter, no spam, no reselling your address
  • — Built and assembled in Hong Kong
  • — You can leave the list any time