Rob -
It's kind of amazing, and gratifying, first, to have you feel comfortable enough with the Festool community to open up like you did at a difficult time, and second, to see the many kind responses from all around the world. I lost my Dad in 1985 at age 70 (also too young), and it was really difficult to deal with. It was satisfying to know that we loved and respected each other; it would be much more difficult to handle if a lot had remained unsaid until it was too late. You don't say too much about this, but reading between the lines, your relationship was clearly rewarding for both of you.
Coincidentally, a good friend just lost his father this morning as well. He was 82 and in poor health for quite awhile, so 'it was time' . . . but that doesn't make it any easier, either. Just take it one day at a time, remember the good times, and give yourself plenty of breathing room. Unfortunately, there are no shortcuts (nor should there be). You'll find along the way that each anniversary, birthday, and special holiday brings both good memories and renewed grieving at the same time; a mixed blessing to be sure, but something that everyone goes through. The next year is a lot easier, but he'll be in your thoughts a lot. Mine still is, after more than 20 years.
Take care, and God bless.
Ed Gallaher