Minor Rust Repair Conclusion - Clear Coating
Posted by Jay Schneider. Filed under Automotive.
November 17, 2010
All of the ground work has been carefully laid out and the surface is now ready for clear coat. This is where the men are usually separated from the boys. Spot repair requires knowhow and technique to properly execute the repair as to not notice that any repair has been done. First and foremost, a clean surface is key. Removing any dust from the finish will prevent build ups of clear which would then need to be sanded out and buffed once the clear has cured. I like to use tack cloths just prior to applying the clear – this way there is less chance of dust landing on the surface. Mix the clear per manufacturer’s instructions and prepare the gun or airbrush. Generally applying the clear is accomplished in two ways: 1) applying two medium coats or 2) applying one light coat followed by one medium coat. Seek the manufacturers’ data sheet for proper application.
Apply the first coat just out to where the base coat stopped. This is the area where we sanded with 1000 – 1200 grit sand paper. Allow the clear to flash off – usually 10 to 15 minutes. Apply the second coat just past the first coat. Now, this is the “tricky” part. There are solvents available in the category of “Hot Blending Solvents”. These blending solvents, when sprayed directly onto the overspray, take the over sprayed clear droplets and flow them out – dissipating them and rendering themselves unnoticeable. There are two ways to accomplish this task: one gun and two gun methods. The one gun method: Once applying your last coat of clear, dump out the remaining clear into an approved waste disposal container and pour into the cup the blending solvent. Without any delay, lightly spray the over sprayed area with the blending solvent and transition over and onto the area where we previously have wet sanded with 1000 or 1200 grit sand paper. Carefully watch how the overspray magically disappears! The two gun method simply uses another gun which is standing by with blending solvent ready to go. Once the last coat of clear is sprayed, simply use the other gun to spray the over sprayed area. Let the surface fully cure. A buff free area should prevail if all of the above has been properly executed. If not, a little wet sanding and buffing will blend it out beautifully!
This concludes our blog on Minor Rust Repair – we hope you have learned a few things and are now knowledgeable enough to get you feet wet!
Scott S. Mc Lain
Lake Country Mfg.