Branch Clamp Lower V1

implemented unverified

Biomorphic pack Bio-1 (docs/BIOMORPHIC.md): lower half of the split branch/pipe clamp — the functional core a lamp arm or tool mount hangs from a living branch with. Constant YZ section extruded along X (X = the branch axis), printed on its section (side_profile, support-free by construction). The open saddle notch is HALF the nominal branch circle whose center sits compression_gap/2 beyond the mating plane, so the bolted pair always squeezes the branch and never closes a hole around it (the split-clamp law — a tree grows). Two flat pad lands recessed into the saddle take glued TPU strips; two heatset bolt columns in the wings (id mount_pilot_* — the screw_joint pilot convention) receive the upper half; a cord slot pair near the saddle center takes a shock cord for one-handed mounting. The clamp_mate datum bakes the compression gap in (joints land datum-on-datum and cannot express offsets). The outer shell is an exoskeleton_panel canvas — the bio skin grows there in Bio-3+.

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_branch_clamp_lower
archetype: branch_clamp_lower_v1@1

params:
  nominal_branch_d: 60mm
  clamp_w: 40mm

modifiers:
  - id: apply_biomorphic_exoskeleton
    target: outer_shell

Parameters

parameter	type	default	range	role
`nominal_branch_d`nominal branch/pipe diameter at the clamping point	`length`	`60mm`	`30mm … 100mm`	functional	exposed
`clamp_w`clamp body width along the branch axis	`length`	`40mm`	`32mm … 120mm`	structural	exposed
`compression_gap`designed daylight between the bolted mating faces: the TPU pads always stay compressed, the faces never bottom out	`length`	`3mm`	`1.5mm … 6mm`	functional
`screw`clamp bolts (heatset inserts in this half)	`choice`	`M4`	`M4`	assembly
`base_t`floor thickness under the deepest saddle point	`length`	`8mm`	`5mm … 14mm`	structural
`flange_t`bolt wing thickness at the mating plane	`length`	`10mm`	`8mm … 14mm`	structural
`wall`minimum wall between the saddle and the outer shell	`length`	`4mm`	`3mm … 8mm`	structural
`bolt_web`web between the saddle edge and the bolt axis — form.saddle_geometry_ok fails a bolt placed over the open mouth	`length`	`8mm`	`0mm … 20mm`	structural
`edge_m`wing material beyond the bolt axis	`length`	`10mm`	`6mm … 16mm`	structural
`corner_r`	`length`	`2.5mm`	`1mm … 5mm`	aesthetic
`land_angle`pad land positions, degrees from the saddle bottom — with the upper apex land this is three-point contact by construction	`number`	`50`	`30 … 65`	functional
`land_w`flat width of each TPU pad land	`length`	`14mm`	`8mm … 20mm`	functional
`pad_recess`radial recess of the pad lands (glued TPU strip thickness)	`length`	`1.2mm`	`0.6mm … 2mm`	functional
`insert_depth`heatset insert pocket depth in the wings	`length`	`6mm`	`5mm … 8mm`	assembly
`cord_y`cord slot offset from the saddle centerline	`length`	`6mm`	`4mm … 10mm`	functional