Combination Safe Enlarged Ends

Here's a slight modification to the lid and bottom pieces of the original to make it a little easier to grip and pull the pieces apart. I really like the design of the original, very well thought out and prints great; I just couldn't get a good grip on the lid to pull it out of the sleeve. That issue might not be as big of a deal if the safe was scaled up like [SavageRodent](http://www.thingiverse.com/SavageRodent) mentions was the end goal for his design. I personally like the size as is.