Tin-brass sandwich
As opposed to the pictures below, I had to solder all the layers together. I used an aluminium mandril wisible below for this. Each layer was first tin coated using soldering iron. Then all the layers were stacked on the mandril and heated on a stove and squeezed in a vise.
The method is very time-consuming and gives poor results. Given the choice, I would buy die-cast metal wheels next time.
How to get brittle wheels...
Each wheel consists of 5 layers of 0.5mm thick brass sheet metal.
I assemble the wheel on turned aluminium jig. Before gueing it I smear the jig.
I smear the top layer with loctite, onto it I glue the next layer and insert a pin into crank
hole.
This is how a few layers look like. It is good to turn around the assembly after glueing each layer
to ensure that the central hole in perpendicular to the plane of the layers.
All the wheels - ready to be turned.
