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Living Hinge Plate V1

implemented unverified

One-piece folding plate: a thin plate with a transverse living-hinge groove — the blank for card cases, glasses pouches and snap wallets. The flex web is the whole mechanism: its thickness is measured against the fold-without-tearing band, and the honesty check states what AF cannot measure — fold-cycle life is a material property (PETG/PLA folds tens of times; polypropylene is the real living hinge).

Built from a real example — orbit to inspect.

Declaration example

A minimal product declaration for this archetype — exposed parameters at their defaults. Validate and build it with forge validate / forge build.

schema: product/v1
id: my_living_hinge_plate
archetype: living_hinge_plate_v1@1

params:
  plate_l: 120mm
  plate_w: 70mm
  web_t: 0.5mm

modifiers:
  - id: fillet_soften
    target: blank_lightening

Parameters

parametertypedefaultrangerole
plate_llength120mm40mm … 220mmfunctionalexposed
plate_wlength70mm25mm … 160mmfunctionalexposed
tplate thickness — living hinges live on THIN plateslength1.6mm1.2mm … 3mmstructural
corner_rlength4mm1mm … 10mmaesthetic
web_tlength0.5mm0.3mm … 0.8mmfunctionalexposed
groove_wlength3mm1.5mm … 6mmfunctional
hinge_xfold line position (0 = the middle)length0mm-80mm … 80mmfunctional

Regions

  • blank mounting surface
  • blank_lightening aesthetic lightening

Contract

Guarantees

must-have features and invariants — verified on every build

  • mounting_plate_body
  • living_hinge_web
  • web_t < t - 0.4

Will refuse

explicit prohibitions — the engine refuses to build these

  • none declared

Not claimed

what passing validation does not mean

  • Provided “as is” under Apache-2.0 — no warranty of fitness for a particular purpose.

Built from operations

rounded_plateliving_hinge_groove

Allowed modifiers

fillet_soften

Subscribed validators (6)

form.holes_within_outlineform.living_hinge_web_okform.living_hinge_fatigue_unverifiedform.cuts_respect_keepoutstopology.cutout_presenttopology.single_connected_solid