The Fabri-Tac is good for an aluminium grille (covered with celluloid or paint on the outside). If the grille is wood or celluloid, use white (pva) glue. If the grille is celluloid then you can absolutely not use any glue with acetone as it will dissolve the celluloid!
Never apply the glue directly to the grille. You apply the glue onto a sheet of paper or a piece of cloth (not the decorative cloth for the grille) and then press the paper or cloth on the inside of the grille to transfer the glue to the grille only where the glue needs to go. Remove the paper/cloth and then put the decorative cloth on.