Update README.md

README.md

@@ -1,7 +1,45 @@
-The "Notch" System: * 1 Notch = The smallest offset (tightest).
+# 🏎️ PVC Overspray & Paint Booth Framework
 
-3 Notches = Your current "winners" (0.15 for 1" and 0.20 for 1/2").
+### Project Overview
+This repository contains the CAD files and documentation for a modular, collapsible paint booth frame. The system is designed for high-speed production on CoreXY 3D printers (specifically calibrated for the **Elegoo Centauri Carbon**) and utilizes standard PVC piping for the structural skeleton.
 
-6 Notches = The largest offset (loosest).
+---
 
-Documentation Entry: "Tolerance tests should be performed whenever switching filament brands or PVC manufacturers. Use the 10mm ring array; the '3-notch' ring represents the gold-standard fit for the current Centauri Carbon calibration."
+### 🛠 Hardware Specifications
+* **Main Structure:** 1" Schedule 40 PVC ($33.4mm$ OD)
+* **Stabilizer Rail:** 1/2" Schedule 40 PVC ($21.3mm$ OD)
+* **Base Mounts:** 2x4 Lumber (Footers)
+* **Connectors:** 3D Printed Custom Hubs (4.0mm Wall Thickness)
+
+### 📐 Structural Components
+1.  **Front Hubs (x2):** 3-Way 1" sockets for the booth entrance corners.
+2.  **Hybrid Rear Hubs (x2):** Transitions 1" vertical/side rails to a 1/2" rear cross-brace.
+3.  **Floor Flanges (x4):** Heavy-duty sockets with wide-bore screw holes for 2x4 footer attachment.
+
+---
+
+### 🚀 Printing & Calibration
+The integrity of this booth relies on a high-tolerance friction fit. Before printing the main hubs, you **must** perform a tolerance check.
+
+* **Tolerance Standard:** * **1" Pipe:** $+0.15mm$ offset
+    * **1/2" Pipe:** $+0.20mm$ offset
+* **Calibration Files:** See the [`/calibration`](./calibration/README.md) subfolder for ring-test arrays and notched identification guides.
+
+#### Recommended Print Settings:
+* **Walls:** 4 Minimum (for structural leverage)
+* **Infill:** 25% Gyroid
+* **Supports:** Tree Supports (Touching Buildplate)
+* **Orientation:** Vertical ("Standing") to maximize socket strength.
+
+---
+
+### 📝 Assembly Instructions
+1.  **Foundation:** Screw the 4 Floor Flanges into your 2x4 lumber footers.
+2.  **Verticals:** Insert 1" PVC uprights into the flanges.
+3.  **Skeleton:** Connect the top 1" side rails using the Front and Rear Hubs.
+4.  **Stabilize:** Slide the 1/2" PVC rail into the hybrid ports on the Rear Hubs.
+5.  **Enclosure:** Wrap the frame in 4-mil or 6-mil plastic sheeting and secure with clips or tape.
+
+### ⚠️ Maintenance & Safety
+* **No Glue Required:** The calibrated friction fit allows for tool-less knockdown and storage.
+* **Airflow:** If mounting an extraction fan, tether it directly to the 1/2" rear stabilizer rail for center-weight distribution.