Have KATO cancelled their Double Fairlie?

[Welshbloke]

The main kit manufacturer to look at is Dundas Models. They were Parkside Dundas, but sold the O, OO and N tooling and the Parkside brand to Peco a few years ago (the same kits now come in packaging branded "Parkside by Peco"). The 009 range stayed put as Dundas.

 

One caveat, the kits aren't exactly up to Tamiya standard and can need some fettling to make everything fit nicely. You will also need to figure out how to attach couplers - I find the "Greenwich" couplers work well, they come as an etched brass fret you cut out and fold up (with a few drops of superglue or solder to secure folds), then bend the mounting "tail" so they sit at the right height when it's glued to the wagon.

 

There is also a 3d print file to make a loaded slate wagon on Thingiverse, I've printed a few and left them on our club 009 layout. You need to find wheels, couplers and some ballast weight to go inside the slate loads, but a decent length train of them is cheap enough and looks pretty good.