OO Wide Couplings: X9660, X8031, Dovetail. Hornby, Dapol, Bachmann 3D printable model by MrBunsy
OO Wide Couplings: X9660, X8031, Dovetail. Hornby, Dapol, Bachmann photo 1 OO Wide Couplings: X9660, X8031, Dovetail. Hornby, Dapol, Bachmann photo 2 OO Wide Couplings: X9660, X8031, Dovetail. Hornby, Dapol, Bachmann photo 3 OO Wide Couplings: X9660, X8031, Dovetail. Hornby, Dapol, Bachmann photo 4 OO Wide Couplings: X9660, X8031, Dovetail. Hornby, Dapol, Bachmann photo 5 OO Wide Couplings: X9660, X8031, Dovetail. Hornby, Dapol, Bachmann photo 6

OO Wide Couplings: X9660, X8031, Dovetail. Hornby, Dapol, Bachmann

Source: Thingiverse by MrBunsy

The OO Wide Couplings: X9660, X8031, Dovetail. Hornby, Dapol, Bachmann is a free printable 3D model from Thingiverse by MrBunsy. This configurable coupling generator (couplings_parametric.scad) is capable of producing an X8031 (Hornby/Bachmann), X9660 (Dapol/Hornby/Airfix) and Hornby dovetail (hornby's NEM. You can download the STL file from the original listing below and print it at home.

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47 saves Source: Thingiverse Updated 2026-09-24 License: GPL · commercial OK Category: Vehicles & RC

Tags: Bachmann, Hornby, Model Trains, OO gauge

About this model

This configurable coupling generator (couplings_parametric.scad) is capable of producing an X8031 (Hornby/Bachmann), X9660 (Dapol/Hornby/Airfix) and Hornby dovetail (hornby's NEM socket socket), with and without hooks. Usually the real dovetail fixing creates a NEM socket, but I've skipped the middleman and produced a coupling that can slot straight into the Hornby chassis. In my experience, the real dovetail connectors fall out far too easily, especially when pulling a long train. The printed version isn't perfect, but stays in better than the real Hornby ones I've used (when fitted with a wide coupling). I've uploaded the most useful STL files. The Dapol coupling will need printing in something flexible. PLA snapped when trying to insert it, PETG worked well. The hooks seem to work best …

Frequently asked questions

Is this 3D model free to download?
Yes. OO Wide Couplings: X9660, X8031, Dovetail. Hornby, Dapol, Bachmann 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 MrBunsy.
Who made this model?
Designed by MrBunsy, 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.

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