I found a giant Thoth at the local bookstore and bought it.
Then I proceeded to Hobby Lobby and purchased a large corner cutter and instead of using scissors, I purchased a straight edge cutting board that has a sliding cutter on it......
WOW it works perfectly!!!!
I am getting the cards done in about 90 seconds each and they are almost identically sized......very little room for error!!!!
No blisters! No accidental slips! and the final result is a circumsized Thoth that is NORMAL SIZED!!!
ohhh....that last sentence sounds kinda bad......