In ancient times, when there were no lathes, how were beads rounded?

In ancient times, there were no electric machines or lathes. How on earth were those beads ground into circles? I am also very curious about this issue, so I have done research very early on and discussed it with many friends in the industry. I will tell you about it today.

Modern production technology

The current production technology is generally divided into two types, one is completed by machine tools, and the other is completed by hand. Let’s talk about the whole machine tool first. First, make the wood into long strips.

Then put it into the machine, and the beads will come out at once.

Semi-automatic, you need to grind it manually with clips, first cut it into a cylindrical shape, and then put it on the machine

Ancient craftsmanship

The ancient craftsmanship is actually divided into two There are two evolved versions, one is hand grinding, and the other is these polishing methods. Let's take a look at the polishing method first:

Put the square wood into an iron container

Water, hard sand, rice bran, wheat bran and sawdust, and let the pot rotate.

The second method is to make it pull through a pull rod to function as an electric machine.