Mike Phillips
Active member
- Dec 5, 2022
- 51,004
- 6
Are swirls circular scratches?
The answer is "no".
I explain what swirls are in 2008 on the MOL forum. Here's the explanation in detail.
Cobweb Scratches or Cobweb Swirls
Actually, the term cobweb swirls or spiderweb swirls comes from the fact that when you look at the paint in such a way as to place the reflection of the sun or another source of bright light so that it's on a painted panel, you'll see what looks like swirls and scratches forming in a circular pattern around the point of light.
Cobweb Scratches or Cobweb Swirls
Cobweb Scratches or Cobweb Swirls
Now if you move around a little bit so as to move the point of light around on the panel you'll see what looks as though the cobweb swirls are following the point of light. The cobweb swirls are not actually following the point of light what's really happening is that the entire finish is so filled with random scratches that wherever you place the point of light you'll see the circular or cobweb pattern show up because the random scratches will reflect the light back towards the center of this point of light. So as you move the point of light around on a painted panel it looks as though the cobweb swirls are following the point of light.
Does that make sense?
The scratches are not specifically circle scratches, they could be a all straight-line scratches but the effect is they look circular because the point of light is circular and the light hitting the hundreds of thousands of scratches are all reflecting back to the center of the point of light making it look as though the scratches are all circular when that's not the case.

The answer is "no".
I explain what swirls are in 2008 on the MOL forum. Here's the explanation in detail.
Cobweb Scratches or Cobweb Swirls
Actually, the term cobweb swirls or spiderweb swirls comes from the fact that when you look at the paint in such a way as to place the reflection of the sun or another source of bright light so that it's on a painted panel, you'll see what looks like swirls and scratches forming in a circular pattern around the point of light.
Cobweb Scratches or Cobweb Swirls

Cobweb Scratches or Cobweb Swirls

Now if you move around a little bit so as to move the point of light around on the panel you'll see what looks as though the cobweb swirls are following the point of light. The cobweb swirls are not actually following the point of light what's really happening is that the entire finish is so filled with random scratches that wherever you place the point of light you'll see the circular or cobweb pattern show up because the random scratches will reflect the light back towards the center of this point of light. So as you move the point of light around on a painted panel it looks as though the cobweb swirls are following the point of light.
Does that make sense?
The scratches are not specifically circle scratches, they could be a all straight-line scratches but the effect is they look circular because the point of light is circular and the light hitting the hundreds of thousands of scratches are all reflecting back to the center of the point of light making it look as though the scratches are all circular when that's not the case.
