Is this 3D model free to download?

Yes, DuPont Polarizing Pin Plug is free to download from Thingiverse. Open it in the free Thinger app, or use the "Download from Thingiverse" link to open the original listing by the creator.

Where do I download the STL file?

The download is hosted by Thingiverse. Use the "Download from Thingiverse" 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 davidhbrown, published on Thingiverse. 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.

DuPont Polarizing Pin Plug 3D printable model by davidhbrown

DuPont Polarizing Pin Plug

Source: Thingiverse by davidhbrown

The DuPont Polarizing Pin Plug is a free printable 3D model from Thingiverse by davidhbrown. These tiny items fit into Dupont(R)-style pin header housings to prevent plugging it in unless a pin has been omitted in that location. You can download the STL file from the original listing below and print it at home.

Open in Thinger (free) Download from Thingiverse

142 saves Source: Thingiverse Updated 2026-10-17 License: CC-BY-NC-SA · non-commercial Category: Gadgets & Electronics

Tags: Created with FreeCAD, female wire connector, header, pin header

About this model

These tiny items fit into Dupont(R)-style pin header housings to prevent plugging it in unless a pin has been omitted in that location. This allows reasonable polarization protection while using common 0.1" (2.54mm) pin headers that normally could be plugged in backwards. This worked great for a 3-conductor cable; I just used a four-position housing and plugged up one of the interior holes. The first picture shows that preventing backwards connection. For a 6-pin cable, I didn't want to add just one position because 7-position housings are uncommon. So I added 2 positions and made a double plug for convenience. This is shown in the second picture. I had been using JST's MHT connectors on the board because they are polarized. But scaling this up proved a problem because the US$40 crimping p…

Frequently asked questions

Is this 3D model free to download?: Yes. DuPont Polarizing Pin Plug is free to download from Thingiverse. Open it in the free Thinger app, or use the "Download from Thingiverse" link above to open the original listing.
Where is the STL hosted?: The download is hosted by Thingiverse, not by Thinger. We link you directly to the original listing by davidhbrown.
Who made this model?: Designed by davidhbrown, published on Thingiverse. 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.