Erase the eraser

Task types:
Mastertasks:
Mastertask notes:
In this version of the task, the contestants have 15 minutes to prepare, and must then attempt to erase as much of an eraser as possible in just 60 seconds.
Locations:
Task brief
The task brief is laid on the table in the lab. The brief for the task is as follows:
Erase as much of this eraser as possible in 60 seconds.
You have 15 minutes to prepare.
Most erased eraser wins.
Your 15 minutes starts now.
Task notes
- Also on the table, there is a plain white rectangular pencil eraser.
Task stats
Points
15
Disquals
0
Attempts
It looks like no task attempts have yet been written for this task. Someone's probably working on it, though!
