This homemade lathe is foot-operated.
Beside the stable spindle, there's a wooden stick parallel to it.
He can rest his hand holding the tool on the stick and slide it back and forth along the stick.
This way, his hand doesn't shake.
The nails without screws were first cast using molds and then polished.
To craft screws, he deliberately reduced the spindle speed of the lathe, making it easier to operate by hand.
Currently, he has no auxiliary tools.
There are no gears either.
So, he can only use this clumsy method.
His idea is to initially craft all the equipment and parts by hand and then use them to create more machinery.
Ma Lin had an idea completely different from when he was in school.
He knew that manual dexterity could gradually improve and that his craftsmanship would become increasingly refined.
Therefore, he believed that even with his crude equipment, he could still manufacture usable screws that would fasten two pieces of steel without matching nuts.
