Step 3Hollow out the Erasers!!!
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This has got to be the hardest part of the whole project. It make the biggest mess, and I shold have done it differently. I chose to use a drill with a 3/32 bit. I assumed that the drill bit would go through and pull out chunks of debris like it was meant to do with wood, but it didn't. It just went in and made hole that closed up after I removed the bit. It took me a good 40 minutes to hollow out the main case alone. I accidentally drilled through the eraser a few times, but luckily they closed up after I pulled the drill out.
Anywho, You want to go as far into the eraser as you can without drilling through it. You also want to make the slot about 1/8in tall, and about 9/16in wide. same goes for the lid.
I recommend using a rotary dremmel instead of a drill. I didn't have one so I used what I had in my closet.