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PPG Basecoat Blending Waterborne SOP PD0706WB
>> YOUR LINK HERE: ___ http://youtube.com/watch?v=ECZxW3ZjipI
This standard operating procedure (SOP) covers the process for successfully blending a basecoat using a waterborne finish. Before beginning any repair, it is important to always wear the recommended safety protection required for the job. • Follow along with the outlined process below for the first steps in achieving a flawless finish. • ---------- • PD-0706WB: BASECOAT BLENDING - WATERBORNE STANDARD OPERATING PROCEDURE • ---------- • 1. Identify Color Formula • Identifying the correct color formula is the essential first step in achieving a good match with waterborne basecoat. Look up the vehicle color using a color retrieval tool and identify the location of the corresponding chip deck in the waterborne color box. • 2. Check for Variant Chip • Check for a variant chip that provides an acceptable, blendable match. • 3. Prepare a Sprayout Card • If necessary, prepare a sprayout card, using the correct G-shade card recommended by the formula. Sprayout cards, or a letdown panel, are required for tri-coat, quad coat and translucent colors. • 4. Apply an Approved Sealer • After checking to determine that all panels have been prepared properly, apply an approved sealer, using the recommended G-shade for the basecoat color. Apply just enough sealer to cover the primer surfacer area. • 5. Blend the Sealer Edges • To create a smoother transition, melt in the sealer edges using a blending solvent. Or, after the sealer has dried thoroughly, lightly scuff the sealer edges with P800 grit sandpaper. • 6. Appy a Wet Bed to the Repair Area • Applying a color blender to the repair area—extending just beyond the color blend—will create a “wet bed”, which can also assist in blending, especially for metallic and pearl finishes. This process is spelled out in the product information bulletin. • 7. Mix the Basecoat • Mix the basecoat following the reduction instructions closely. • 8. Check the Viscosity • Once the color is mixed, check the viscosity using a DIN 4 cup. Ideal viscosity should fall between 23 and 28 seconds. • 9. Thin Viscosity if Needed • If the viscosity is greater than 28 seconds, it’s too thick. Thinner will need to be added. Start by adding 5% more. • 10. Apply the Basecoat • After tacking off the area, apply the basecoat. Keeping the gun 6-8 inches away from the surface, apply medium light coats with a 75% overlap. Keep the gun aimed straight at the repair—no wrist flicking. • 11. Applying Additional Coats • Use a handheld blower or similar tool to flash each coat to a matte finish before applying the next coat. Step out each coat further than the previous to create an invisible blend. • 12. Apply Control Coats • After checking for coverage and the color coats have dehydrated thoroughly, reduce the gun’s air pressure and apply 1 to 2 light “control” coats to achieve proper orientation of the metallics. • 13. Apply the Clearcoat • After flashing for 15 minutes and lightly tacking off the repair area, apply the clearcoat according to product instructions. • For more information, visit http://us.ppgrefinish.com/training.
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