Estes Rockets sells a model space shuttle you can build, launch, fly and recover by parachute. I built and flew two of them. I also worked as a NASA contractor on the Space Shuttle External tanks in New Orleans.
1981 - 1991.
I did a quick search and it appears they don't offer the Space Shuttle model any more.
Found one on ebay
You can go above the "D" engines provided by Estes. Once you get into the "E" and above they are usually empty reusable shells that you can use and reload. I loaded up to an "F" engine. I also witnessed a "J" launch where they had to call the local air traffic control for clearance. It is a whole 'nother hobby from making model engines.Estes rockets where one of the great blasts from my childhood. I never had a lot of money growing up so each flight was a carefully planned expense. After a bit the whole neighborhood (well two residents in driving range) wanted to watch to the extent the old retired guy actually purchased a few engines for me. Since my rockets where on the small size it was easy to over engine them. More than a couple flew completely out of sight one of which I found years later, still high up in a tree, while hunting.
Model rocketry is a different sort of hobby with a different sort of engine that leads to lots of excitement for a young kid.
Rocket engines are a form of internal combustion engines. The big difference being the fuel also supplies the oxygen.You can go above the "D" engines provided by Estes. Once you get into the "E" and above they are usually empty reusable shells that you can use and reload. I loaded up to an "F" engine. I also witnessed a "J" launch where they had to call the local air traffic control for clearance. It is a whole 'nother hobby from making model engines.
McKinnon Metals in Toronto does this. Not sure I got 50% off but $20 got me a lot of CR steel and 6061 Al off cuts.I buy most of my metals at the metal mart where commercial and industrial customers buy there metal, they are crops or pieces left over from these orders that are too small for commercial sale EG: CR steel bar 1" dia 16" long and I pay 50% of new price, your local metal guys may do the same, I buy steel various grades, aluminum various grades, brass, bronze, copper, stainless. yes they don't always have exactly the piece I want but it really works pretty well and you then know exactly what you are getting, buying 1440 you get 1440... Make chips not more work