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Stationary Glass Pinchweld Preparation - New Panel

Stationary Glass Pinchweld Preparation - New Panel

When dealing with stationary glass, should I refinish the area where the urethane will be applied to a new pinchweld? Should I remove the E-coat in that area? Let's take a look at some pinchweld prep best practices for new panel installation; like a quarter panel for example.

As a best practice, mask the bonding area on the replaced panel pinchweld from basecoat/clearcoat. Solvents still need to escape even after baking the finish in a spraybooth. The bond of the new finish will not be at full strength and could develop a leak or worse, affect the overall structural integrity of the vehicle. Bare metal areas on the new pinchweld require application of the adhesive maker's bare metal body primer.

Also as a best practice, keep as much of the E-coat intact on the pinchweld as possible. This will provide a layer of corrosion protection on the pinchweld. However, keep in mind that pinchweld primer application is required on the E-coat surface following the product maker's instructions.