It's not clear to me if the "up to" only applies to the length / radius, or if it's meant to apply to the height and width as well. If the latter, it would've been more clear if they'd repeated the "up to". As written, it can be interpreted that the wall must be:Ya, I say the "up to" so that gives some flexibility.
Exactly. That's why I wouldn't allow wiggly walls. It's either a straight line or a circle.... but allowing a lot of bending could really be abused.
I dunno. I'm really just wondering if it's possible.Out of curiosity, why would you ever want the wall to be thinner? Shorter I can understand, especially indoors, but why thinner?
Because if you argue the spell makes a fixed volume of firewall, then making it thinner means you can make it longer, or higher, etc. So, if the wall is just as effective if it is 1/10": thick, then you just made the 'area' (length and height) of the wall 10 times more.Out of curiosity, why would you ever want the wall to be thinner? Shorter I can understand, especially indoors, but why thinner?