Homebrew PCBs

I had to check a couple of stores to find HCl - Wal-Mart and Home
Depot didn't have anything, but Lowes and True Value did (in both
cases, in the paint dept).  Only True Value had NaOH, in the kitchen
dept.  For sodium carbonate, I ended up getting some at a small Market
Basket because the big supermarkets didn't have it.