Hi, It's too cold to go into the shed at night now, or even the back room(*), so looking for a kitchen-table-friendly project I pulled out the S scale bits I bought a while ago to see about a wagon or two. I found the wheels, spring and axlebox castings, and a bunch of wood strips and plastic card... and after checking some e-mails to confirm I did buy some W-iron etches I hunted them down in a different place than I'd stored all the other stuff. Looking at the W-iron etch I can recognise the w-irons and keeper plates, but what are those 4 rectangles with the holes in them? They fold in half, thus making a square with a hole in it. Are they meant to be bearings for the axles or something? Speaking of which, I have the W-irons and axlebox castings but nothing to keep the axles in place (unless that's what those squares are). Do I just make something up like some pin-point bearings and solder them to the W-irons? Regards, David Taylor. (*) While true, an equally true explanation is that everything I've touched in the shed lately has been a bloody disaster so I'm looking for another project I can start and not finish.