The spiders you've been fighting aren't exactly small. This silk seems like it can be used to build things.
Art By:
Phaethon
Attacking And Defending
Can Be Attacked
When you click this in the game:
Attack Silk

HP: 1

Defense: 0
Assembly
Can Be Assembled
Needs to be assembled in an object
Assembled In
Manufacturer

.
Tick Count: 10
Required For Assembly:
Research Required For Assembly:
No research required
Assembled As Object Type (Will Stack)
Used To Assemble
Researching
Can Be Researched
Every research requires 20 Ticks
This needs to be researched 20 times to be completed
Complexity: 14
Is Dropped By
Properties
Can Be Picked Up
Can Be Walked On
Complexity: 14