I glued up a cutting board on top of my tablesaw. A few drops of squeeze out landed on the saw table. In spite of the table being waxed, the glue turned black or at least very dark brown over night. The stuff on the none steel parts turned light brown.
My question is, could I add a few iron filings collected from my grinder with a magnet to the glue and use it to glue walnut? Would the iron weaken the glue?