I bought a 10 foot PVC PIPE. I also used duct tape on the end of the PVC pipes. I add the sand inside the PVC pipes. I filled it up and taped it off with duct tape again.
Then I had to tape and roped one end of the PVC pipe to my ergo curved bar. I then asked my wife to help with the heat gun heating the PVC pipes while I bend it little by little to get the result I wanted.
It was a headache I tell you. It wouldn't budge at first so I turned up the heat then finally I could feel the nice bend to start happening.