I've just come up with an improvement that would be sell-able....hmmmm
I've just come up with an improvement that would be sell-able....hmmmm
If I was going to build something like this I'd probably use threaded rods with nuts and washers so that it was sturdier and also adjustable.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.