I use this website as an aid in figuring out a character's current damage cap.
AnyDice: Dice Probability Calculator
In the field marked output you can write in any dice combination (for example, d10+d12+4). Click on calculate and it will give you the mean, deviation, maximum and minimum results. Add together the maximum and minimum results, divide by two, and you have the character's current damage cap.
Cheers,
Tim
I realized I forgot a step in my instructions. After you click on calculate, you would need to click on summary to get the mean, deviation, maximum and minimum results. Once you've clicked on summary, you can change the input values and click calculate to get the updated data.
Cheers,
Tim
This is really cool. Thanks for sharing.