2. why did we use a drill bit that was wider than the body of the
bolt used to hold the arduino?
3. why do people use drill bits that are smaller or the same size as
- existing holes in circuit boards, like the blue arduino?
+ existing holes in circuit boards, like the holes in the blue
+ arduino?
4. why did we drill through the arduino, rather than marking holes
and using the drill to make holes where the marks were?
5. how does the drill hold onto the drill bit?