On Thursday, November 5, 2015 at 9:59:26 PM UTC-5, Oren wrote:

Battle ships need a torch.

Well........not necessarily.

I saw a guy cut a hole through the armor of a tank.

Actually I saw it just after he finished, it took him two years of weekends and inviting friends for beer.

The armor had to be close to a foot thick. It was a working tank so he couldn't use a torch, but it needed a window in front for legal reasons, to prevent possible nefarious use should it be stolen.

In the corner of the garage was a very large pile of wornout drill bits and cutoff saw blades. He drilled lots of holes next to each other then connected them with a cutoff saw.