I'm low budget. I use a regular hand saw to saw through thick foam.
Also, the hardware store sells a steel wire garrett type of thang that can be looped around pvc and "sawed" back and forth to cut it. I'd look into that for a low cost, no heat option.

Also, the hardware store sells a steel wire garrett type of thang that can be looped around pvc and "sawed" back and forth to cut it. I'd look into that for a low cost, no heat option.