I want to know the answer to the following question:
In Max Schoop's method, what was used to create the flame-sprayed pattern on the board?
All the background I'm provided with is that "Arthur Berry in 1913 patented a print-and-etch method in Britain, and in the United States Max Schoop obtained a patent to flame-spray metal onto a board through a patterned mask.". Is that enough to answer the question?
Answer: yes