The upper mold moves up and down along the sliding rod, so the upper and lower molds are always aligned.
To ensure the coins have a precise shape, the molds must also be precise.
The press can produce thirty coins with each push.
It presses approximately every three seconds.
Which means ten coins per second, six hundred per minute, thirty-six hundred per hour, over thirty thousand per day.
The produced copper coins are definitely sufficient.
As for how the molds were adjusted so well, Chen Chen spent a lot of effort.
The molds are all made of steel.
First, they are polished into flat steel plates.
The efficiency of the homemade grinding machine is quite good.
Then, the coin patterns are carved onto the steel plates.
First, the steel plates must be aligned correctly.
Then, the positions of each of the thirty coins must be aligned, which is particularly difficult.
How to align them so well?
