I have always used cyano adhesives when cutting multiple shapes from thin anything beit brass or ally.
A touch of heat afterwards (like 140 deg - solder temp) breaks the adhesive bond and the parts can be separated. Use the same trick on shims for lathe tools, where each tool is shimmed to the correct centre height. Yeah .. I know all about adjustable tool holders, but try that on an old 36" ctr lathe (circa 1930) - nothing modern fits
Neer mind ... never too old to learn new tricks I say!!
Iain