====== Cube ======

{{tag>assembly structure base}}

//The basic building block of the MoBil system — a 1,33 m aluminium tube-and-connector frame. Support, visibility, shelter or stage, depending on what you mount on it.//

  * **Type:** Structure
  * **Status:** In use
  * **Primary function:** support / visibility / shelter / stage

===== 1. At a glance =====

^ Specification      ^ Value          ^
| Footprint          | 1,33 x 1,33 m  |
| Height             | 1,33 m         |
| Volume             | 2,35 m3        |
| Total weight       | 30,7 kg        |
| Assembly time      | 1 person 10 min - 2 people 5 min |
| People needed      | 1-2            |
| Tools              | Hammer (optional, for pins) |

===== 2. 3D model & steps =====

{{url>https://mobil.brussels/wiki/three-viewer/viewer/index.html?p=cube 100%,720px noborder noscroll}}

//If the model doesn't load, [[https://mobil.brussels/wiki/three-viewer/viewer/index.html?p=cube|open it in a new tab]].//

===== 3. Parts (bill of materials) =====

Everything you need to build one cube. All tubes diameter 50 x 2 mm wall. Click a part for specs and handling.

^ Part ^ Qty ^ Spec ^
| [[mobil:parts:core_kit:short_tube|Straight tube]]      | 12 | 1329,4 mm |
| [[mobil:parts:core_kit:long_tube|Diagonal tube (45)]]  | 6  | 1880,1 mm |
| [[mobil:parts:core_kit:t_connector|T-connector]]       | 16 | 2 per connector node |
| [[mobil:parts:core_kit:x_connector|X-connector]]       | 8  | 1 per connector node |
| [[mobil:parts:core_kit:locking_pin|Locking pin]]       | .  | 1 per tube-connector joint |

  * **Connector nodes:** 8 (each = 2x T + 1x X)
  * **Tubes total:** 18 - **tube length:** 27,23 m
  * **Tube weight:** 22,2 kg - **connector weight:** 8,6 kg - **total:** 30,7 kg

//Source: MoBil builder. Locking-pin count to confirm.//

===== 4. Assembly =====

The cube is built from 8 corner nodes. Each node = the [[mobil:assemblies:structures:connector|connector]] assembly (2x T + 1x X), joined by tubes.

  - **Build the 8 connector nodes.** For each: take one T-connector upright (slot up), slide a second T-connector over it downward, slide an X-connector to the middle, rotate to lock.
  - **Make the bottom square.** Join 4 nodes with 4 straight tubes. Pin each joint.
  - **Add the 4 uprights.** One straight tube into each bottom node, pointing up.
  - **Close the top square.** 4 nodes + 4 straight tubes on top of the uprights. Pin.
  - **Brace with diagonals.** 6 diagonal tubes (45) for load and wind stability. Pin.

//Each step maps to a stage in the viewer above.//

===== 5. Safety & correct use =====

==== Build safety ====
  * Pinch points at every connector - keep fingers clear when seating joints.
  * Don't hammer pins with the frame unsupported; seat the joint by hand first.

==== Use & load limits ====
  * **Max vertical load (stage/roof):** . kg //(to define / test)//
  * **Do not climb** the frame unless rated and ballasted.
  * **Wind:** above . km/h, remove banners/roof and ballast or take down. //(define)//
  * Never leave a tall configuration up unattended in changing weather.

==== Ballast / anchoring ====
  * Footprint anchoring with [[mobil:parts:accessories:water_weight|water weights]] at the base corners for any raised or sail-bearing configuration.
  * [[mobil:parts:accessories:ropes|Ropes]] to fixed points where available.
  * Minimum ballast: . kg per corner //(define per configuration)//.

===== 6. Takedown & storage =====

  - Remove add-ons and ballast first.
  - Pull top pins, lift off top square.
  - Pull uprights.
  - Break bottom square.
  - Nodes can stay assembled for next time, or break to flat-pack.
  * **Packs into:** [[mobil:parts:logistics:normal_bike_trailer|normal bike trailer]] (tubes + euroboxes for connectors).
  * Store dry. Check pins aren't bent before repacking.

===== 7. Compatible add-ons =====

What this cube accepts:

  * [[mobil:assemblies:addons:roof|Roof]]
  * [[mobil:assemblies:addons:hamac|Hamac]]
  * [[mobil:assemblies:addons:banners|Banners]]
  * [[mobil:assemblies:addons:light_inflatable|Light inflatable]]
  * [[mobil:assemblies:addons:cinema_screen|Cinema screen]]

//Larger version: [[mobil:assemblies:structures:double_cube|Double cube]].//

===== 8. Media & credits =====

  * Photos - Drawings - Exploded diagram
  * Linked: [[mobil:assemblies:structures:connector|Connector]] (the core joint)

//Designed by . - Year . - Iteration . - Last updated: .//