the problem with that is you wouldn't get enough weight in there to make any difference to the land.What about a 47kg propane cylinder with the ends cut off, you could weld 2 together if one is not long enough.
From memory they are about 15" in diameter.
Filled with sash weights cemented in would surely be heavy enough?the problem with that is you wouldn't get enough weight in there to make any difference to the land.
