A couple of days ago I received a test etch for a replacement chassis for a Wrightlines Baldwin 4-6-0
It is designed round a high level 54:1 gearbox which will drive the rear coupled axle.
I'm building this to 14mm gauge although 16.5mm might be possible.
There's a chance it might also fit the CW railways 3D print, although I don't have one of these.
Each frame comprises 4 layers to achieve a scale thickness of the real loco's bar frames.
The layers are pinned together with small pieces of 0.45mm wire, 2 of the frame spacers and the bearings, then tack soldered together.
Once both frames have been assembled, the chassis looks like this
In these photos the rear bearings are soldered in place and the inside is filed back to the frames to allow space for the gearbox, the others are currently an interference fit until I have finished the rods, then I can check the spacings with jig axles and fix the bearings in place.
A couple of parts from the Wrightlines chassis will be needed, the crossheads and possibly the slidebars, although the slidebars may need to be done from scratch.
Finally, a photo of the chassis that was with the Wrighlines kit for comparison
Thanks for looking
Mike