I've been watching on and off the Templot developments for 3D printed chairs in either 3D printed or laser-cut sleepers. The big interest for fellow true gauge aficionados is it is meant to work in any gauge or scale. I think the chairs are defined by a CAD file so it should be possible to produce 14mm track with all variants of Welsh chairs.
?
The following link on WT is probably easier to follow than the Templot forum itself:
On this thread there are also details of someone who will print and lasercut track from Templot files as a service.
?
I have to confess I have a love-hate relationship with Templot (more of a hate if truth be told) but I understand it has got slightly easier to use of late.
?
John