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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](https://www.amazon.com/AC-Infinity-Reduction-Stainless-Flexible/dp/B0B6JPT3BB)
4” Inline Fan (Example Used):
Vivosun 4” – ~196 CFM
4” Ducting (Hot/Cold Rated Recommended):
AC Infinity 4-layer ventilation duct
If running hot air, avoid cheap ducting.
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](https://www.amazon.com/gp/aw/d/B0DWT1JZPT)
What’s Included
- Top funnel with 4” connector
- Main cylindrical filter housing with hook mount
- Bottom base with hook mount
- Screw-together system enclosing the filter between the top and bottom sections
Installation Overview
- Print 3 parts
- Glue funnel to filter body
- Insert cylindrical filter
- Screw top and bottom together
- Attach 4” fan via clamp or duct
- Orient fan based on use case
Ideal For
- 3D printing ABS / ASA / Nylon
- Resin printing room air cleaning
- Laser cutting light materials
- Grow tent odor control
- Print farms
- Small workshops
- Apartment-safe ventilation setups
Future Roadmap
- 6” duct coupler version
- Core 600S oversized model
- Wall mount brackets
- Manifold adapter for multi-printer farms
- Quick-release latch version
