We once had a WT Wholesale Tool Store in our area. They were quite the resource as they carried everything from Cheap Chinese tools to name brands like Black Hawk and SK Wayne. The best part was that you could buy a single tool - not a set of tools like at HF. You could buy a single open end/ box end combo wrench or a socket in the size you needed. This allowed one to make modified or specialized tools for specific applications. They had inexpensive grinding wheels and entry level machine tools like bench grinders, small drill presses, etc.
Unfortunately, the store closed and now I can only mail order from them.
If you are lucky enough to have one of these WT Tool stores near you, you can buy a couple of 15 mm wrenches to modify into pedal spanners or cone wrenches. I modified a socket for use in dismantling Suntour derailleurs. They also had inexpensive, oversized open ended wrenches for large machine tool applications. These could be ground to metric dimensions for headset wrenches or Bottom bracket tools. sThe possibilities were limitless…