tweaks

lib/moon_model/generator.rb

@@ -166,6 +166,7 @@ module MoonModel
 
         - Mode: #{result.segmented? ? "eight section" : "one piece"} (#{result.mode_source})
         - Purpose: #{config["purpose"]}
+        - Interior: #{result.statistics["interior"] == "solid" ? "solid slicer volume (use configured infill)" : "hollow shell"}
         - Datum diameter: #{format("%.2f", result.statistics["diameter_mm"])} mm (#{format("%.3f", result.statistics["diameter_mm"] / 25.4)} in)
         - Final terrain envelope: #{format("%.2f", result.statistics["final_envelope_mm"])} mm (#{format("%.3f", result.statistics["final_envelope_mm"] / 25.4)} in)
         - Vertical exaggeration: #{config["vertical_exaggeration"]}×
@@ -186,7 +187,7 @@ module MoonModel
         |---|---|---:|
         #{bodies}
 
-        The structural shell remains separate from the colored surface. Both the structure and the first-color surface use filament 1, so an N-color Moon can contain N+1 bodies. The 3MF contains standard material names/colors plus Bambu Studio part names and slot assignments; confirm physical AMS or external-spool mappings in the slicer. The stand intentionally has no material assignment.
+        The structural volume remains separate from the colored surface. Both the structure and the first-color surface use filament 1, so an N-color Moon can contain N+1 bodies. The 3MF contains standard material names/colors plus Bambu Studio part names and slot assignments; confirm physical AMS or external-spool mappings in the slicer. The stand intentionally has no material assignment.
 
         ## Files
 
@@ -241,7 +242,15 @@ module MoonModel
           4. Apply adhesive to the recessed equatorial land, align longitude seams, and close the second hemisphere from the outside.
         MD
       else
-        "# Printing\n\nThe one-piece hollow Moon requires slicer-generated build-plate adhesion and support appropriate to the selected material.\n"
+        if result.statistics["interior"] == "solid"
+          <<~MD
+            # Printing
+
+            The one-piece Moon is a watertight solid slicer volume. Select the desired sparse infill pattern and percentage in the slicer; no internal cavity supports are required. Configure build-plate adhesion and external support for the lower surface as appropriate to the selected material and printer.
+          MD
+        else
+          "# Printing\n\nThe one-piece hollow Moon requires slicer-generated build-plate adhesion and support appropriate to the selected material. Internal supports may be difficult to remove and can break loose inside the finished Moon.\n"
+        end
       end
       path = File.join(write_dir, "ASSEMBLY.md")
       File.write(path, text)