Beachcomber wrote:
I need to dispose of a treadmill that is mostly composed of hollow
steel pipes and channels, mostly welded together.

Beachcomber



This may be way too obvious, but have you tried giving it away - they
haul? An adv. in the paper would be cheaper than renting a saw or torch
set and spending several frustrating hours trying to cut it up, followed
by hauling to the recycelr for a few bucks.