Step 1: Obtain an electric blender working or not
One blender I tried didn't work though because I couldn't remove the top wheel from the shaft. This is the only thing that will prohibit the blender from being used- is if the components won't disassemble after trying EVERYTHING!!
I used a blender that was relatively old. I don't have a picture of it in its original state but the idea is you want a blender who's bottom can be removed and mechanical insides exposed to be modified.