Apply 3M™ VHB™ Surface Cleaner or 3M™ General Purpose Adhesive Cleaner 08984 using 3M™ Professional Panel Wipe 34567 to clean the area. Allow to dry completely.
Use 3M Roloc Disc P80 to smooth rough edges of broken tab.
Drill several holes of 3-6mm in diameter in the remaining part of the tab to increase the strength of the repair.
Coat tab area in 3M™ Polyolefin Adhesion Promoter 05917 and leave to dry for 10 minutes.
Apply 3M™ Superfast Plastic Adhesive 55045 using 3M™ Applicator 08190 to adhere broken tab, making sure to fill support holes. The adhesive will cure in 20 seconds.
Repeat on the reverse and allow to set for 5 minutes.