instruction:
In this task the focus is on physical knowledge about the world. Given the provided goal task in the input, describe a process that would lead to the asked outcome. This process often involves physical motions with objects, such as moving them, arranging them in a certain way, mixing them, shaking them, etc. 
question:
Making a Tanto Knife From Lawn Mower Blade.
answer:
Gather your materials including a lawn mower blade and cut the design using angle grinder, using  a bar of aluminium bolster the handle, using wood or ivory make the grip, paint.


question:
how do you switch things out?
answer:
replace one thing with another.


question:
To aide the process of power sanding metal.
answer:

Soapy water will help wash away particles and act as lubricant.