Tried a wheat paste recipe from 1887 and my book covers looked completely different...
I was digging through this old bookbinding manual I found at a thrift store downtown, and it had a recipe for wheat paste that called for boiling the flour for 45 minutes straight. I figured hey, how different could it be from my usual 10 minute microwave method? Well, after I let that stuff cool overnight and used it the next morning, the glue was way more tacky and held the spine lining like a dream. Usually I get these little bubbles or warping after a day or two, but this batch stayed flat and smooth. The color was even different too, it dried a bit more matte instead of shiny. I'm wondering if the long boil breaks down the starches in a whole other way... has anyone else tried old school paste recipes that just blew their modern technique out of the water?