Saw the PVC lengths according to the length and quantity desired. Typical barbell lengths are around five feet in length. Cutting more than one can give you a set of varying weight, dependent on the material you use to fill the tubes.
Apply the PVC bonding cement to one end of the piping and attach an end cap. Mix the concrete in a small bucket according to the directions on the package. Use the trowel to shovel the mix into the PVC pipe, stopping once the bar is a quarter full. Insert a pre-cut piece of rebar into the pipe.
Continue filling the PVC pipe with the Quikcrete until the pipe if full. Apply the bond on the top end and attach the end cap. Allow to set for a few minutes before sanding the pipe surface, which textures the surface and allows for a better grip.