First, shape it into a very standard geometric form.
This is to facilitate connection with other parts.
Then, carve a slot on its top surface and insert a sliding steel plate. The slot and the steel plate fit perfectly together.
The steel plate has two holes to adjust the two airways.
When the left hole connects with the left pipe, the right pipe is closed.
When the right hole connects with the right pipe, the left pipe is closed.
As Ma Lin completed this part, he began to feel concerned.
He had cut the air pipes into three parts.
Would it really be possible to connect them all during assembly without any leakage?
The pipes were holes drilled inside the iron blocks.
You couldn't see how they joined from the outside.
In Ma Lin's previous steam engine model, he thought this was where the issue arose.
