Edging
I
edged the entire car, edging means to go around and remove the sanding marks from all the edges leaving only the major portions of the panels left to compound.
Most people just compound the entire panel from start to finish and that approach works and is used in body shops all the time, but I like to edge all the panels for a couple of reasons.
1) This isn't my car and for that reason I want to be very careful. If it were my car I would edge it, even though it's not my car
I treat it like it is my car.
2) Removing the sanding marks around all the edges using a 4" pad is actually very easy to do and gives you GREAT control over the process, especially if you have the Flex 3403 or a lightweight and small rotary buffer to work with. You remove most of the risk for burning and edge or a high point due to the control factor.
Here's the roof edged,
After I finished edging the roof, I was finished edging the entire car. The next step is to remove the sanding marks out of the center portions of the roof, the major portions of the panel. Using #3000 Grit Foam Finishing Discs, means it only takes a just a few minutes to compound out the major flat portions of the roof using the Makita with a W5000 Double Sided Wool Cutting pad with the M105.
Next I machine polished the roof 3 times with the rotary and then once with the DA and then I sealed it with M21. I probably won't get those pictures uploaded and inserted however as I'm going back out to finish compounding the major portions of the rest of the panels on the car.
I usually work the roof of a car all the way to wax, or paint sealant and the tackle all the panels below it afterwards. I'll share why tomorrow but feel free to take a guess as to why someone would work a sand, cut and buff project like this?
Here's a
1951 Desoto I actually Damp Sanded before Damp Sanding was a term, I did this one with Richard Lin.
If you look carefully at the roof, you'll see it has a soft, flannel sheet taped onto it, that's because we sanded, cut, polished and sealed the paint before tackling the lower portions of the car. We damp-sanded the entire thing at one time, but did the buff-out on the roof from compounding all the way through to sealing in one process and then covered it to prevent dust from accumulating on the finish.