Vaxalon said:
One of my old DM's took the 20-sider from his dice set (this is back in the days of the "low impact plastic" dice in the basic set) and rounded all the corners except those opposite the "20". He thought it would make the 20 come up more often. The joke was on him. He never rolled a 20 on that die again.
True story (because I did it).
It was the early '80s (maybe 1983 or 1984 I think), and I decided to try an experiment. This was back when a d20 just had the numbers 0 to 9 twice and you had to ink or crayon them to tell which ones were 1-10 and which were 11-20.
The fad at the time was to ink one entire side high and the other low, instead of mixing the numbers up. This could be done because each side had a set of 0-9, centered on the zero.
So I took one of my d20s and filed down the edges on the high numbers side. My hypothesis was that it would tend to roll past those edges and stick or end on the 'hard' normal edges, placing the low numbers down and the high numbers up.
Well, I confided what I had done to one of my friends, but not the DM. We played that evening and my friend and I were amazed at how excellently I rolled. Instead of rolling a single digit half the time, I was above ten at least three quarters of the night. All rolls were made in the open and everyone noticed how great I was rolling. I had effectively loaded the die and it worked great. No one except the one other guy who knew ever noticed anything funny about the die except how high it was rolling.
After the game was over, my buddy and I were convinced that I had made a cheating die. I 'fessed up to the DM and the other players and showed them what I had done. I then took an Xacto knife to the die and drilled a hole through it, so no one (me especially) would be tempted to use that die again.
As exciting as it was to spend the entire evening rolling great, I was never tempted to modify any of my other dice. The excitment was in the rolling and the 'nobody else knows' exclusive knowledge, but it made the game itself less fun.
-Dave
Dang, I had almost forgotten that story. I still have the die, though, in my dice bag.