BOGIES 11
Bogies are made from aluminium or plastic channel. Aluminium is more rigid by care has to be taken with insulation between axle and wheels.
Axles are held in slots, basically hole opend downwards. A strip of plastic glued to the side below the wheels holds the axle in place. On the example here the sides are built to enable a side plate to be fitted representing the side plate of the full size bogie.