The making of tools is essential to get desired cuts and scrapes. Flea market chisels and old files are excellent tools to modify to scrapers. A simple propane torch will throw enough heat to smith the cheap and broken tools. Inexpensive grinder, stone, a cheap vise, file and emery paper and you are in business. I would visit you tube on heating, annealing and tempering tools with a propane torch. Sure, takes time, when I began building guns I had very little in the way of tools, probably more than the mountain gunsmiths of the 1800's. A coffee can of broken, rusted chisels and a propane torch ( the most expensive of the lot. I had an old brace and bits from the tool shed and a broken carpenters hammer. Just remember, what looks like a bunch of wood to hog out may just be a few thousands.