How to make a barbell and dumbell

[Eye of the Tiger]

Just wandering if anyone knows how to make a 2" to 3" barbell and dumbell, also where might I buy I barral or possibly how to make one, same with sandbags.

 

Thanks a lot

[omnifinite]

I lived somewhere once where someone left some equipment they apparently made. They took metal rings and filled them with concrete (bigger thicker rings is heavier of course... I couldn't tell you what weighs what). In the middle of the concrete he'd put a hollow pipe/joint/whatever which I guess might be used in fence-building... and the metal bar (also the type you might see in a chain-link fence) would slide into those holes in each weight. Then you'd put a peg in a hole through the joint and the bar to keep them from sliding off. That would probably be pretty simple to do.