Collector Endcap V1

implemented unverified

Vertical Farm Pack (tilted flush row canon, VF-4.2): the Collector/Drain Endcap — a sloped catch tray under the LAST rail's lap lip on a STURDY U-frame (two full side walls carry the cantilever, not thin columns). The tray drains through a VERTICAL bore out the sump bottom: the push-in tube enters from below and routes under the row (no sagging horizontal ceiling). The lip continuing the channel floor plane is the drip edge, its protrusion IS the air gap. Droplets detach at the lip tip, fall into the tray mouth, run down the tray floor to a push-in drain bore enclosed below the rim at the floor's lowest point — the tray empties completely, verified not postulated (form.collector_tray_drains + topology.fluid_path_open). Hangs tool-free on the rail FRONT wall: arm over the wall top, side cheeks outside the drip band, dry tongue riding the outlet corridor ABOVE the exiting water. Mates the rail's drain_edge port. Prints as modeled. Local frame: y=0 = the rail front face; the catch datum sits at the lip tip on the handover plane.

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_collector_endcap
archetype: collector_endcap_v1@1

params:
  tray_w: 20mm
  tube_od: 9mm
  dock_magnets: False
  screen_seat: False

Parameters

parameter	type	default	range	role
`tray_w`tray inner width — wider than the rail channel's drip band	`length`	`20mm`	`16mm … 180mm`	functional	exposed
`tube_od`outer diameter of the silicone drain tube (hardware, BOM)	`length`	`9mm`	`6mm … 13mm`	assembly	exposed
`bore_clearance`	`length`	`0.4mm`	`0.2mm … 0.8mm`	manufacturing
`cassette_w`	`length`	`177mm`	`160mm … 236mm`	assembly
`seat_clearance`	`length`	`0.75mm`	`0.5mm … 1mm`	assembly
`module_w`	`length`	`205mm`	`200mm … 250mm`	assembly
`seat_depth`	`length`	`14mm`	`10mm … 20mm`	assembly
`channel_d`	`length`	`5mm`	`4mm … 8mm`	assembly
`lip_t`shared rail lap-lip thickness — the handover plane is the lip tip underside	`length`	`1.4mm`	`1.2mm … 1.6mm`	assembly
`lip_len`shared rail lap-lip protrusion (same name as the rail's parameter — shared: injects both) — how far outside the wall face the drip edge and the catch datum sit	`length`	`4mm`	`3mm … 6mm`	assembly
`channel_w`	`length`	`16mm`	`12mm … 20mm`	assembly
`tongue_w`dry locator tongue width — must fit INSIDE the rail channel	`length`	`14mm`	`8mm … 18mm`	functional
`tray_slope_deg`tray floor slope toward the drain — the drain sits at the tray's low point so the floor empties to it (VF-7); the mounted row tilt adds to this	`number`	`2.5`	`0.8 … 3.0`	functional
`catch_fall`drop from the lip to the tray floor — deep enough to enclose the drain bore below the rim	`length`	`8.5mm`	`6mm … 12mm`	functional
`capture_depth`receiver capture past the rail face — the lip tip must keep >= 2 to the apron wall (VF-4.1 end receiver)	`length`	`8mm`	`6mm … 8mm`	functional
`drain_extension`sump length past the mouth so the VERTICAL drain has solid body to grip the push-in tube (VF-4.2)	`length`	`10mm`	`8mm … 14mm`	functional
`wall_extra`extra U-frame side wall thickness beyond a molded skin — carries the cantilevered tray as a wall, not a column	`length`	`3mm`	`1.6mm … 4mm`	structural
`saddle_fit`	`length`	`0.4mm`	`0.2mm … 0.8mm`	manufacturing
`corner_r`	`length`	`3mm`	`2mm … 6mm`	aesthetic
`dock_magnets`VF-6: dock the collector arm onto the LAST rail's front wall-top magnets (rail needs endcap_dock: front) — alignment only	`bool`	`False`	`—`	assembly	exposed
`dock_x`dock magnet centers at +-dock_x — must match the rail	`length`	`22mm`	`14mm … 40mm`	assembly
`dock_inset`dock pocket step inboard from the rail face — match the rail	`length`	`7mm`	`4mm … 12mm`	assembly
`dock_fit`diametral press-fit of the d6x2 dock magnet	`length`	`0.2mm`	`0.1mm … 0.3mm`	manufacturing
`screen_seat`VF-8: carve a LOWERED sump WELL fed by a radial funnel — the tray floor slopes to the drain from every side, the drain sits at the absolute low point, and a drop-in strainer basket seats in the well over it. The seat keys are always published; the funnel + well are cut only when this is on (and the drain shifts to the tray centre)	`bool`	`False`	`—`	assembly	exposed
`screen_seat_w`strainer basket OUTER footprint across X; the funnel well mouth is this + 2*clearance (match the drain_screen basket screen_l)	`length`	`24mm`	`18mm … 90mm`	assembly
`screen_seat_d`strainer basket footprint along Y — must overhang the drain bore so water passes only through the mesh (fits the shallow sump)	`length`	`13mm`	`10mm … 24mm`	assembly
`screen_sump_depth`how far the sump well floor drops below the tray floor — the radial funnel converges over this depth to the drain (absolute low)	`length`	`5mm`	`3mm … 9mm`	assembly
`screen_funnel_w`the funnel opening width across X — the tray floor slopes in from here to the well mouth (clamped to the tray interior)	`length`	`74mm`	`40mm … 120mm`	assembly
`screen_seat_clearance`	`length`	`0.75mm`	`0.5mm … 2mm`	assembly