for those who wax/polish by hand. which way is the best in your opinion? or does it even really matter? I use blackfire and it says to use small circular motion... but i've noticed some people (judging from the buff marks) do it in straight lines. should I use the same technique for QD spraying also?

 

I use Zaino and they recommend stright. Vertical on the sides and horizontal on other areas (i.e., hood and top).

 

Straight lines for me and Zaino. It doesn't matter for QD but I apply the same method anyway.

 

I recommend that ANY product that is applied to your paint be done so in a straight line. That will greatly reduce the risk of producing or enhancing swirl marks. And, of course, use a nice, fluffy microfiber or 100% cotton terry towel.

Sal Zaino suggests that the application be done in these directions for optimal light reflection and refraction:

 

but now wouldn't that make "straight marks" instead?? just assuming you're using the wrong towels. I'm using only MF towels and applicators on my Z.. so far so good.. except for the dealer that put some swirls

 

When hit by light straight line scratches will reflect less. Swirls will catch light from any/all angles. Just my $.02

 

Well put!!

 

ahhhh ok... good point

 

Definitely use straight motions. No matter how careful I was, I now see some straight swirl marks on my G. But, you can only see it under very bright lights and at only the right angle. If I had used circular motions, they would be 10X more noticeable. Time for some coats of Z5