All ChatGPT created, I just was scrivener and Feerless Leader.

README.md

@@ -1,3 +1,45 @@
-# filament-drybox-cost
+# Filament Drybox Cost Model
 
-Ascertain the out-of-pocket costs to create one or more dryboxes.
+20260319 ChatGPT  
+$Header$
+
+## Purpose
+
+This project provides a transparent and reproducible cost model for the
+"Filament Storage 2026" drybox project by GunplaMark.
+
+The model is intended to answer questions such as:
+
+- What is the out-of-pocket cost to build 1 drybox?
+- How does the per-unit cost change when building 4 dryboxes?
+- How does the per-unit cost change when building 12 dryboxes?
+- What inventory remains after each build scenario?
+- How much do filament and electricity contribute to the total?
+
+The model accounts for:
+
+- lot-based purchasing
+- per-box usage
+- printed part filament cost
+- electrical cost of printing
+- optional waste factor
+
+See video at https://youtu.be/lJDoVH7qTKs?si=cQMhUda7RQcuIDJU  by user GunplaMark entitled "Filament Storage 2026 - The Final Boss of My Drybox Journey".
+
+ 
+## Repository Layout
+
+```text
+.
+├── LICENSE
+├── README.md
+├── data
+│   ├── assumptions.json
+│   └── bom.json
+├── export
+├── tools
+│   └── generate_csv.pl
+└── web
+    ├── app.js
+    ├── index.html
+    └── style.css