Our Crackmaster long crack repair structure slides along so the injector can inject resin into the crack from the surface. The Crackmaster for long cracks is designed so it can slide from the tip/point of the crack to the edge of the windshield. With the stabilizing bolts it is self-leveling and the pressure is controlled so to not push the crack closed as long cracks are surfaced. The pressure bolt allows you to temporarily increase pressure while at the drill hole so you can get our 400 crack resin to fill the tapped bullseye and start into the crack.
A windshield is only 5 mm thick. The outer layer you are repairing is only 2 mm thick. It will flex easily. This tool's design allows for sliding and does not flex the glass so to push the crack closed. Tools used to repair chips have too much pressure and will flex the glass and push the crack closed so that it will under-fill or spot the repair. It boils down to the physics of the tool: length, compression, mechanical advantage, size and durometer of the cups.
The two stabilizing bolts allow for automatic leveling. Just push the cup down, level the injector and your ready to go.
You must have a crack-opener to use this tool. The crack-opener tool is the secret to easy and fast long crack repair. Here again it must be of proper size to allow for leverage and mechanical advantage without causing the crack to spread. Our crack-opener symmetrically opens the crack to create an overfill. You will see resin come out of the top (surface ) of the crack when you release it. That is what you want, for a complete fill you must overfill!
Repairing long cracks puts you in the repair vs replacement market. You can put an ad in the Yellow-Pages or Google Adwords and see a profit, which you cannot do just repairing stone-breaks/chips.
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