saltylab-firmware/cad/tether_anchor.scad
salty 02217443ea chore: merge CAD files and design docs from seb/saltylab seed repo
Consolidating seb/saltylab into saltylab-firmware before deleting the seed repo.
- 16 OpenSCAD CAD models → cad/
- Design docs (SALTYLAB.md, PLATFORM.md, AGENTS.md, board-viz.html) → docs/
2026-03-07 10:04:24 -05:00

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// ============================================
// SaltyLab — Tether Anchor Point
// 50×50×20mm PETG 100% infill
// For ceiling tether during balance testing
// Must be STRONG — 100% infill mandatory
// ============================================
include <dimensions.scad>
anchor_w = 50;
anchor_d = 50;
anchor_h = 20;
ring_dia = 30; // Carabiner ring outer
ring_hole = 15; // Carabiner hook clearance
ring_h = 8;
module tether_anchor() {
difference() {
union() {
// Base (clamps to 2020 extrusion)
translate([-anchor_w/2, -anchor_d/2, 0])
cube([anchor_w, anchor_d, anchor_h - ring_h]);
// Tether ring (stands up from base)
translate([0, 0, anchor_h - ring_h])
cylinder(d=ring_dia, h=ring_h, $fn=50);
}
// Ring hole (for carabiner)
translate([0, 0, anchor_h - ring_h - 1])
cylinder(d=ring_hole, h=ring_h + 2, $fn=40);
// 2020 extrusion channel (through base)
translate([-extrusion_w/2 - tol, -extrusion_w/2 - tol, -1])
cube([extrusion_w + tol*2, extrusion_w + tol*2, anchor_h - ring_h + 2]);
// Clamp bolt holes (M5, through sides)
for (angle = [0, 90]) {
rotate([0, 0, angle])
translate([0, anchor_d/2 + 1, (anchor_h - ring_h)/2])
rotate([90, 0, 0])
cylinder(d=m5_clear, h=anchor_d + 2, $fn=25);
}
}
}
tether_anchor();