What Is REAL_Gripper_Blade
A 68 mm Fin-Ray blade that nobody currently remembers supplying — and that the entire v4 geometry chain is still built on top of. Here is everything the repo knows about it.
It was not archived, because the live build imports it
generate_blade_arcsweep.scad:22 sets src = "REAL_Gripper_Blade.stl".
Every v4 mesh descends from it. Archiving it with the other 59 superseded STLs would break
the build outright, so it stayed — but it fits the profile of the old files that should not
be trusted as a measurement reference.
Suggested and not yet done: keep it, rename it to something that states what it is
(e.g. SOURCE-ONLY_operator_3mf_blade_68mm.stl), and note in
AUTHORITATIVE.md that it is a geometry source, never a dimension reference.
The rename touches four scad files.
01 — What it looks like
Rendered from the file itself
A classic Fin-Ray: triangular frame tapering to a point, a ladder of ribs across the middle, and a row of small friction nubs down the grip edge.
02 — What the repo says about it
| Source | What it claims |
|---|---|
| HARDWARE.md:627 | "the blade extracted from the 3MF the operator supplied" |
| CONTINUE.md:820 | "the operator's own original file" |
| generate_blade_fan_cradle.scad:40 | "the operator's supplied 3MF, object_4" |
| AUTHORITATIVE.md:24 | the mounting foot (z ≤ −27) of the parametric blade is still this file's real mesh |
| AUTHORITATIVE.md:65 | distinguishes it from the generic upstream download, which has a different long axis (Y, 92 mm) and full-height ribs at ≈11.5 mm pitch |
| git 13d9384 | committed 2026-08-18, commit message "hh" |
03 — Who depends on it
| File | How |
|---|---|
| generate_blade_arcsweep.scad | src = — the v4 chain |
| generate_blade_fan_cradle.scad | src = |
| generate_blade_parametric_converge.scad | src = |
| generate_integrated_w90.scad | extension built on the 68 mm stock |