Re: Touching Up Body Panels - Advice Please



When doing the wings you may be better doing the panel as they are off the car, most places even say they need to do the entire roof to get a good finish if they are repairing a scratch.
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Like the other guy said, most profesional body shops will only do entire panels. Some insist on doing the ones next to a damaged panel so that they can 'blend in' the new and old paintwork (they do this by fading out the spray and then compounding the panel back to a high gloss). But it sounds like you are working with an aerosol spray system and so this approach is not realistic.
As a method of avoiding a lip between the newly painted area and the old paint, you could lift the edge of the masking tape by 4mm or so. This help to prevent a sharp edge. However, the paint underneath the lifted masking tape will be slightly dustly looking rather than super shiny. You can get rid of this (after a week or so) by first sanding the whole area with 1200 grit wet and dry paper and then polishing with a cutting compound such as Farecla G3 using a Gmop applicator fitted to a drill. For a supplier see: http://www.bodyshopwarehouse.co.uk/default.asp?go=1 &shop=&dep=&cat=&prodid%49 Wicks do a M14 adaptor so that you can fit the Gmop into a drill.
If your old paintwork is a bit faded you may well have to compound the entire roof to blend the new area in with the old but you should be left with a no visible lines between the new and old paintwork.
Hope this helps
DaveW
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