Local steel supplier, for the food grill I placed the existing food grill on top of the weld mesh and drew around it with a marker then cut it with an angle grinder
For the charcoal basket I used the coal grate from a smaller BBQ and got some weld mesh, I think, 13" wide, I then just rolled it into a tube and used nuts and bolts to fasten it like that so that it wouldn't unwind then stood it on its end and welded it to the base.
My build doc so you can see what I mean about the basket
https://www.dropbox.com/s/7lndnbdgkom2h ... w%20To.pdf