3D Printer Air Filter

Modular 3D Printer Air Scrubber—HEPA + Carbon Filter | Room or Enclosure Use

From Radical Idea to Rapid Prototype—Innovating at the Speed of Home Manufacturing.

Take control of your 3D printing environment with this high-performance modular air scrubber system designed specifically for makers, print farms, enclosed printers, tented setups, and small workshops. It also works for hydroponic setups.

This design supports a 10" x 11" cylindrical HEPA + carbon filter (LEVOIT Core 400S size) and pairs perfectly with a 4" inline ventilation fan like the Vivosun D4 (196 CFM) .

It can be configured as:

- 🔥 Enclosed 3D printer exhaust system (CoreXY printers, UV printers, bedslingers enclosed in tents, etc.) …) - 🌫️ VOC/toxin air scrubber - 🏠 Small room air purifier - 🌱 Tented hydroponics ventilation filter - 🔬 Low-power laser cutter fume extractor Designed To Work With:

- LEVOIT Core 400S Replacement Filter (10” x 11”) - Toxin absorber/VOC carbon filters - 4” inline ventilation fans (~196 CFM recommended) - 4” ducting systems - Compatible with any CoreXY printer exhaust adapters on Makerworld. - Here is my design for the Elegoo CC. Two Configurations (Important!)

1️⃣ Pull from Enclosed Printer (Recommended for VOC Extraction)

Fan orientation: Printer → 4” duct → Fan → Filter → Clean air exhaust

This pulls fumes directly from:

- CoreXY printers - Enclosed Bambu setups - Tented printers - Multi-printer duct manifolds - Hydroponics tents

2️⃣ Room Scrubber Mode

Flip the fan orientation: Room air → Filter → Fan → Clean air exhaust upward

This works like commercial air scrubbers:

- Pre-filter catches dust/pet hair - HEPA traps particulates - Carbon absorbs VOCs and odors

For rooms: General sizing rule = ~0.8–1 CFM per sq ft

196 CFM ≈ 100–200 sq ft room coverage Larger rooms or longer duct runs? Consider upgrading to a 6” fan (future version coming).

Key Features

✅ Modular 3-part print (prints on 3 plates) ✅ Screw-together top & bottom for easy filter replacement ✅ 4” duct compatible ✅ Hook system (top + bottom) for hanging installation ✅ Floor, desk, or suspended mounting options ✅ Compatible with toxin absorber filter variants ✅ Upgrade path to 12” x 13” Core 600S filter (future upscale version)

Why This Design Is Better

Unlike DIY bucket filters or passive systems:

- Uses high-quality commercial HEPA + carbon filters you can order online - Scalable airflow via inline fan - Cleaner airflow path with funnel design - Easy serviceability - Modular and upgrade-friendly - Home-manufacturable but performance-focused Print Profile Recommendations

Material:

- PLA (recommended for standard use) - PETG (recommended if pulling hot air or exposed to UV lights such as in a hydroponic tent) If exhausting hotter air directly or using it in a hydroponic humid environment with UV lights, use PETG .

Print Settings:

- Layer Height: 0.28mm (fast) or 0.24mm (cleaner finish) - Walls: 5 or more perimeters - Infill: 50% or higher (gyroid, triangle, or cubic) to help with air tightness and strength. - Top/Bottom Layers: 5+ - No supports required (main body) - 4” connector: - Print slower for cleaner overhang - OR use light supports for best finish Airtightness Recommendation (Very Important)

Because FDM printing can have micro gaps:

Seal the funnel/top section using:

- Clear UV-resistant spray (Krylon Clear Coat) - Siraya Tech Aegis Clear - Any clear polyurethane sealing spray This ensures: ✔ Air flows ONLY through the filter ✔ No micro-leaks ✔ Maximum VOC filtration performance

Recommended Parts

4” Noise Reduction Clamp (AC Infinity Style): https://www.amazon.com/AC-Infinity-Reduction-Stainless-Flexible/dp/B0B6JPT3BB

4” Inline Fan (Example Used): Vivosun 4” – ~196 CFM

https://www.amazon.com/VIVOSUN-Inch-Inline-Ventilation-Blower/dp/B01M7S46YZ

4” Ducting (Hot/Cold Rated Recommended): AC Infinity 4-layer ventilation duct

If running hot air, avoid cheap ducting.

https://www.amazon.com/AC-Infinity-Heavy-Duty-Four-Layer-Ventilation/dp/B07WNK7N7F

Filter Options

Current Design:

- ~10” Diameter - ~12” Height - LEVOIT Core 400S size example of the filter I use: https://www.amazon.com/gp/aw/d/B0DWT1JZPT

What’s Included