Forearm Cuff Socket V1

implemented unverified

Wave A1 swap driver: the forearm cuff with a SWAPPABLE payload — the integrated snap-C of forearm_cuff_v1 is replaced by a female dovetail socket crown. Payload adapters (flashlight clip, accessory plate, future GoPro/LED/sensor feet) slide in along the arm axis; the cuff body never changes when the payload does. Same body_fit sizing, strap closure, TPU pads and comfort fillets as the P2 cuff; same sideprint discipline. Axial retention of the adapter is friction-only in v1 — stated by the dovetail joint report, not hidden.

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_forearm_cuff_socket
archetype: forearm_cuff_socket_v1@1

params:
  arm_circumference: expr(body_circumference)
  cuff_l: expr(min(body_length * 0.35, 90))
  groove_top_w: 12mm

modifiers:
  - id: add_strap_slots
    target: strap_land_left

Parameters

parameter	type	default	range	role
`arm_circumference`forearm circumference — defaults to the body_fit block	`length`	`expr(body_circumference)`	`150mm … 450mm`	functional	exposed
`arm_clearance`	`length`	`expr(body_clearance)`	`2mm … 12mm`	functional
`cuff_l`	`length`	`expr(min(body_length * 0.35, 90))`	`40mm … 120mm`	structural	exposed
`strap_w`	`length`	`expr(body_strap_width)`	`15mm … 40mm`	assembly
`wall`	`length`	`4mm`	`expr(2 * printer_min_wall) … 8mm`	structural
`arm_capture_deg`	`number`	`240`	`210 … 262`	functional
`land_angle`	`number`	`45`	`25 … 60`	functional
`land_w`	`length`	`14mm`	`8mm … 20mm`	functional
`pad_recess`	`length`	`1.5mm`	`0.8mm … 2.5mm`	functional
`comfort_edge_r`	`length`	`2mm`	`1.2mm … 4mm`	functional
`tab_t`	`length`	`4mm`	`3mm … 6mm`	structural
`tab_len`	`length`	`26mm`	`20mm … 40mm`	structural
`payload_mount`this variant IS the socket	`choice`	`dovetail_socket`	`dovetail_socket`	assembly
`groove_top_w`dovetail groove opening — the adapter standard dimension	`length`	`12mm`	`8mm … 20mm`	assembly	exposed
`groove_bottom_w`groove bottom (wider — the undercut that retains)	`length`	`17mm`	`10mm … 26mm`	assembly
`groove_depth`	`length`	`6mm`	`4mm … 10mm`	assembly
`crown_wall`	`length`	`3.5mm`	`3mm … 6mm`	structural
`crown_floor`	`length`	`3mm`	`2.5mm … 6mm`	structural