In addition to the cars I also made a train for this series. Same design principles as the rest of the series. It was basic enough to make several and just enough to challenge to learn and try new things.
The main learning came from the large dowels. I needed to put a flat surface on them. The last time I did this I attached it to a board and ran it through a band saw. This worked ok. It did not remain as flat after I sanded away the tooling marks. This time I had a plane, but I did not have a sturdy workbench or reference plane. That is where the table saw came in. it is a flat surface with a ripping fence. It worked great.
The holes on the chassis for the cars also proved to be a challenge. One is ¼” and the other is 9/32” both should be drilled at the same time. I really did not want to guess which side to put the groove. I ended up only drilling part way through. This way the side that was not drilled, was the side I grooved.
I really liked how the train turned out. It is 22 inches long and about 4 ½” tall.