Looking to reinvent Laffitte welding plate that was sold over a
Interesting quest. Laffitte sounded french to me, so I googled a bit
in that direction.
Here’s a link to old french publicity of the Laffitte company:
Googling further using the formal name of the company, “Societe des
plaques et poudres E0 souder”, brings quite some
especially Google Books has some in different languages, among the
french and US patents.
They obviously also had a welding powder that was spread over the
already red-hot metal which were then, again, hammer welded to join