small mod

cases/attitude-w-battery/README.md

@@ -8,7 +8,7 @@ Generated by the Feather Case Wizard.
 - 1/4-20 insert: yes
 - Approximate exterior: 88.6 × 61.1 × 34.4 mm
 - Formats: 3mf
-- Parts: `body`, `lid`
+- Parts: `body`, `lid`, `lid_base`, `lid_accent`
 - Custom cutouts: 0
 
 Run `ruby build.rb` in this directory to regenerate exports and previews.
@@ -23,3 +23,9 @@ openscad -p parameters.json -P attitude-w-battery source/feather_case.scad
 
 The 3MF files contain portable geometry only. Choose printer, filament,
 plate, and slicing settings in Bambu Studio.
+
+For a two-color lid, open `exports/3mf/lid_multicolor.3mf` as one
+multipart object. Assign “Lid base — Filament 1” and “Accent inlays —
+Filament 2” to the desired filaments. `lid.3mf` is the complete
+single-color fallback; `lid_base.3mf` and `lid_accent.3mf` are also
+provided separately.