It's considerably cheaper to build your own gym equipment than ever buying it. I remember reading someones efforts to build a human hamster wheel, built from st

It's considerably cheaper to build your own gym equipment than ever buying it. I remember reading someones efforts to build a human hamster wheel, built from steel tubing which cost ~$300. I know I saw a wooden one built for ~$50 of lumber. IIRC the wooden saw took a mitre saw and a single wood chisel, so with tools included it likely cost less than $100. The wooden human hamster wheel looked considerably sturdier than most wooden furniture capable of holding several people. Exercise and 'medical' equipment go through rigorous testing, mostly to absolve the developer of liability.