Blue tape and superglue will do the trick. Tons of videos on YouTube showing how to do it. I use this all the time and it works great.
if nothing else works you could drill a few screws into the work piece and when done clue a plug or dowel in the hole and sand flush. if screws small enough use ca glue to plug themI’ve made a 24 inch diameter circle gluing 16 trapezoids together but each time I go to route the inside my piece moves! I’ve used gorilla two sided tape along with blocks screwed to butt up against the circle. Still moves!! Suggestions??