When I’m turning bowls using a faceplate, I mount the bowl blank to a piece of 3/4″ scrap and screw the faceplate to the scrap. An easy way to make a sturdy, yet breakable joint between the scrap and blank is to coat the scrap with Duco® Cement and apply a sheet of newspaper to it. Press the paper firmly to the blank. Then use more cement to glue the bowl blank to the newspaper facing, and let it dry overnight. After you’ve finished your turning, a couple sharp raps with a mallet and a paint scraper will split the paper joint easily to release the bowl. A little acetone cleans off any paper residue.
– Monroe J. Mechling