build_l_bracket
Create an L-shaped bracket with bolt holes on each leg for mounting sensors or components. Define leg lengths, width, thickness, and bolt specifications.
Instructions
Soporte / bracket en L — L-shaped autoparts bracket with bolt holes on each leg, in one call.
Junior workflow: "soporte L para fijar el sensor a la carcasa, 50×80×40mm con 2 barrenos M8 en cada cara". Wraps the extrude-L-profile + face-anchored-cut flow into one call. The most-common stamped autopart in the Mexican PYME shop floor.
Composes: create_sketch("front") + 6×create_line -> L-profile extrude_sketch(width) -> L body create_sketch_on_face × 2 + create_circle×N + extrude_cut × 2 -> bolt holes through each leg
Args: leg1_length_mm: Length of the first leg (vertical leg in the standard orientation). Must be > 2×thickness_mm. leg2_length_mm: Length of the second leg (horizontal leg). Must be > 2×thickness_mm. width_mm: Bracket depth (out-of-page in side view). Must be > 0. thickness_mm: Wall thickness — same for both legs. Default 5mm (typical stamped-steel autopart). leg1_bolt_count: Number of bolt holes through leg 1. 0..6. 0 = no bolts on this leg (one-sided bracket). Default 2. leg2_bolt_count: Same for leg 2. Default 2. bolt_hole_diameter_mm: Through-hole diameter for each bolt. Default 8.5mm = ISO 273 medium fit for M8. bolt_hole_inset_mm: Distance from leg edge to first/last bolt center (mm). Default 15. Constraint: 2×inset + bolt_hole_diameter must fit in each leg's length.
Returns dict: body: Feature info for the L-shape extrude (boss_extrude). leg1_bolts: Feature info for the leg-1 cut, or None if leg1_bolt_count=0. leg2_bolts: Feature info for the leg-2 cut, or None if leg2_bolt_count=0. leg1_length_mm, leg2_length_mm, width_mm, thickness_mm, leg1_bolt_count, leg2_bolt_count: echo back the input dimensions for LLM verification.
Geometry (orientation contract): - L-profile in Front plane (XY): leg1 along +Y, leg2 along +X - Inside corner of L at world (thickness, thickness, 0) - Body extruded +Z by width_mm - Outer face of leg 1 = -X face (X=0); bolts drilled in +X - Outer face of leg 2 = -Y face (Y=0); bolts drilled in +Y
Caveat (no inside fillet): the inside corner of the L is sharp.
For stress relief, post-process with fillet on the inside-corner
edge (use list_edges to find it) — typical R = 1×thickness.
Example — autoparts wall-bracket 60×80mm × 40 wide × 4mm thick, M6 bolts, 2 per leg: build_l_bracket( leg1_length_mm=60, leg2_length_mm=80, width_mm=40, thickness_mm=4, bolt_hole_diameter_mm=6.6, # M6 ISO 273 )
Input Schema
| Name | Required | Description | Default |
|---|---|---|---|
| width_mm | Yes | ||
| thickness_mm | No | ||
| leg1_length_mm | Yes | ||
| leg2_length_mm | Yes | ||
| leg1_bolt_count | No | ||
| leg2_bolt_count | No | ||
| bolt_hole_inset_mm | No | ||
| bolt_hole_diameter_mm | No |