After folding over I make sure a good dab of solder is put on the back - where the hole is - place them in position with tweezers, then hold them in place with the tip of a scalpel blade while applying the iron till the solder runs (aided by some liquid flux) and then keeping pressure on till the solder hardens. It probably helps that I use a small 15watt iron with a very fine 1mm tip but once you get the hang of it, then it does get easier to do. Many of the 2mm etched kits have axleboxes like this, and I actually prefer them to cast ones as it gives the easy ability to choose which types/fronts to use.

If for any reason they move or mis-align when attaching then moving them around with the scalpel tip while re-applying the iron is fairly easy to do. Of course it goes without saying that I hold the chassis at 90 degrees on the work mat so the w-irons/ springs are flat using using any one of a number of tools.

Izzy

The images linked below show some early 16t minerals in Trafford Park in 1949.

They include LNER, LMS, MoT types and early BR ones too; one is branded for iron ore.

https://thetransportlibrary.co.uk/index.php?route=product/product&product_id=119095&search=Trafford+Park

https://thetransportlibrary.co.uk/index.php?route=product/product&product_id=119094&search=Trafford+Park
https://thetransportlibrary.co.uk/index.php?route=product/product&product_id=119092&search=Trafford+Park

https://thetransportlibrary.co.uk/index.php?route=product/product&product_id=119090&search=Trafford+Park

https://thetransportlibrary.co.uk/index.php?route=product/product&product_id=119091&search=Trafford+Park
https://thetransportlibrary.co.uk/index.php?route=product/product&product_id=119089&search=Trafford+Park
https://thetransportlibrary.co.uk/index.php?route=product/product&product_id=119088&search=Trafford+Park&page=2
https://thetransportlibrary.co.uk/index.php?route=product/product&product_id=119087&search=Trafford+Park&page=2
https://thetransportlibrary.co.uk/index.php?route=product/product&product_id=119086&search=Trafford+Park&page=2

Ideal for those who fancy some design variants in the train!