# 🏎️ PVC Overspray & Paint Booth Framework

### 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.

---

### 🛠 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.