Stock metal has a 101% duty fee on it from McMaster
For a local supplier to make sense it has to be cheaper than McMaster-Carr with a 101% duty. It should be easy to find cheaper metal.
There items from the HCR-5100 were purchased from Mr Metal in Etobicoke
We are still in desperate need of this tube: https://www.mcmaster.com/9056K42/ but in cold drawn.