Windshield Repair Forum

I know that in a regular repair i has to use the method of pressure and then vacuum but when repairing long crack i set up the pressure cycle let the resin run down a crack until it reach the mini bulls eyes created at the end of the crack.what i want to know is,do i have to do a vacuum cycle like in a regular repair?can i use a sewer machine neddle to create a bullseyes i the hole at the end of the crack or is to sharp for that?

Start your repair at the bullseye. When you do you will need to proceed with vaccum and pressure. However the crack will normally be surfaced so there is no need to pull a vaccum, just use pressure along the entire crack.