HIVE-L - Core One L Internal Carbon / Particulate Filter

HIVE-L Filter for the Prusa CORE One L Why does this Exist? HIVE-L brings my HIVE filter design to the larger Prusa CORE One L. It draws air from the print area through dual particulate filters and a multi-stage activated-carbon stack, then redistributes it near the bottom of the chamber. The goal is to reduce airborne particles and VOCs while retaining chamber heat and encouraging more consistent temperatures throughout the enclosure. Especially useful when printing ABS, ASA, PC, PA, and other temperature-sensitive materials. What’s Different? - Redesigned to fit the CORE One L, making slightly more use of the space inside the side panel.

- Updated components based on lessons learned from the original HIVE.

- A beefier side handle to make handling the printer easier.

Otherwise, it uses the same filtration arrangement, hardware assortment, and print settings as the original. Matching updates for the CORE One version are coming soon! Current Release Status I wanted to get the design into your hands while I finish the supporting files. These items are coming SOON (as of 10/22/2026): - Preconfigured 3MFs for parts requiring special slicing, particularly the filter grates.

- A multi-piece, printable side panel. Only the steel side panel DXF is included right now, so this release currently requires a fabricated panel.

- Detailed photo instructions for both HIVE-L and the original HIVE!

The required print settings and a short assembly overview are below. Features - Dual robot vacuum–style particulate filters.

- Large, multi-stage activated-carbon canister.

- Dual 40 mm PWM fans: 4028 recommended, or 4020 with the included spacer.

- Curved ducting to redistribute filtered air within the chamber.

- Magnetically retained components.

- Uses the printer’s existing chamber filtration fan connection, with no firmware modification required.

Hardware Required The hardware quantities are unchanged from the original HIVE. - Prusa CORE One L

- 2× robot vacuum particulate filters

- Activated-carbon pellets

- 2× 40 mm, 4-wire PWM fans. 4028 recommended; 4020 supported with the spacer. Use 24 V fans, or 12 V fans with a buck converter.

- M3 Voron heat-set inserts

- M3×8 mm screws

- M3x12 mm screws

- M3×35 mm screws

- 6×3 mm magnets

- Buck converter, required for 12 V fans ONLY

- 4-pin JST-XH fan splitter, optional but highly recommended

- 4-wire Molex Clik-Mate jumper cable for the Buddy board connection

- ASA or ABS filament (PETG may be fine)

- Side panel fabricated from the included DXF; 1.5 mm steel recommended (aluminum MAY be fine)

Files Included - Multi-piece and single-piece main body options.

- Carbon vessel, filter housing, grates, connectors, fan mounts, and side handle.

- Steel side panel DXF

Printing compatibility: All currently included printable parts fit on a CORE One or CORE One L except the single-piece main bodies. Those require roughly a 400 mm-class bed. Use the multi-piece versions for "smaller" printers. Print Settings ASA or ABS recommended throughout. PETG may work but remains untested for fitment and use. Main Bodies - 3 Perimeters / Walls