I made a Frankenstein bicycle when I was young.
The tire on the front was too big for my front brakes
but just small enough for my frame,
so I lived with only back brakes and my shoe for the front tire
(in an emergency).
I also had a bookrack on the back,
which I attempted to weld on with a can of hairspray and a lighter.
This is where I discovered that to weld something
you have to get it really hot, not just
hairspray-flamethrower hot.
However, I did make a very cool torch
and oh yeah
I melted the bottom of the seat.