Original Video from ZACH Chase https://youtu.be/pkB0bWwmL70
"CONTINUATION
16. OUTSIDE OF THE WINDOW Mask using wide masking tape overhanging the edge of the window. Overhang will be cut later with razorblades
17. OUTSIDE of the window: cut the overhang 1/8"" approximately keeping the razorblade at an angle. Cutting at an angle allows to keep the radius clear.
18. Terminal of last tape goes UNDER the edge of the first tape.
19. Clean using ALCOHOL, NO ACETONE.
20. Sand the INSIDE using index finger as a guide to avoid touchin the tape DONT TOUCH OR SAND THE MASKING TAPE. USE 80 Grit. (ALFIO Recommends 220). DONT OVERDUE, TESTED SIKAFLEX 295 on unprepared materials and it sticks very well STICKS ON UNSANDE MATERIAL WELL."