Sewing Machine: the whole path

1
Tools & MakingI
Stone Tools
The first cutting edge
3.3 Mya
2
Fire & ShelterI
Control of Fire
Light, heat and cooked food
1 Mya
3
Fire & ShelterI
Rope & Cordage
Twisted fibres that hold the world
50,000 years ago
4
Materials & ChemistryII
Pottery
Clay turned to stone by fire
18,000 years ago
needs 2
5
Textiles & Everyday LifeII
Weaving
Threads crossed into cloth
c. 6,700 BCE
needs 3
6
Materials & ChemistryII
Charcoal
Wood cooked slowly under earth
c. 4,500 BCE
needs 1, 2
7
Materials & ChemistryIII
Bronze
Copper and tin, harder together
c. 3,300 BCE
needs 2, 4, 6
8
Materials & ChemistryIII
Iron Smelting
Wider adoption around 1200 BCE; ore, charcoal and a bloomery
c. 1,200 BCE
needs 6, 7
9
Materials & ChemistryIII
Steel
Iron with just enough carbon
c. 1,000 BCE
needs 6, 8
10
MechanicsIII
Gears
Teeth that trade speed for force
c. 300 BCE
needs 7
11
Textiles & Everyday LifeIV
Sewing Machine
A thousand stitches a minute
1830
Goal · needs 5, 8, 9, 10