Is this 3D model free to download?

Yes, Coupler for 4" duct is free to download from MakerWorld. Open it in the free Thinger app, or use the "Download from MakerWorld" link to open the original listing by the creator.

Where do I download the STL file?

The download is hosted by MakerWorld. Use the "Download from MakerWorld" link on this page to open the original listing and grab the file, or save it to your print queue in the free Thinger app.

Designed by ScottE, published on MakerWorld. Please credit the creator when sharing your print.

Can I print this at home?

Yes. This is a printable 3D model intended for home FDM and resin printers. Check the original listing for suggested print settings.

Coupler for 4" duct 3D printable model by ScottE

Coupler for 4" duct

Source: MakerWorld by ScottE

The Coupler for 4" duct is a free printable 3D model from MakerWorld by ScottE. This is a quick-n-dirty connector for coupling 4" duct parts directly - parts that are intended to be connected to 4" ducting used for venting ABS fumes from my printer. You can download the STL file from the original listing below and print it at home.

Open in Thinger (free) Download from MakerWorld

295 saves Source: MakerWorld Updated 2026-10-27 Print time: 1h 39m Filament: 92 g License: CC-BY · commercial OK ★ 4.9 (14) 181 makes Category: 3D Printer

Tags: duct, coupler, connector

About this model

This is a quick-n-dirty connector for coupling 4" duct parts directly - parts that are intended to be connected to 4" ducting used for venting ABS fumes from my printer. The coupler is tapered for a tight fit, though it turned out a bit tighter than intended. It worked for my case, the FreeCAD source is included to tweak to your needs.

Frequently asked questions

Is this 3D model free to download?: Yes. Coupler for 4" duct is free to download from MakerWorld. Open it in the free Thinger app, or use the "Download from MakerWorld" link above to open the original listing.
Where is the STL hosted?: The download is hosted by MakerWorld, not by Thinger. We link you directly to the original listing by ScottE.
Who made this model?: Designed by ScottE, published on MakerWorld. Please credit the creator when sharing your print online.
Can I print this at home?: Yes. This model is intended for home FDM and resin 3D printers. Check the original listing for suggested print settings like layer height and supports.