Ding Ring

Need some insight. Every now and then when feathering out a ding I get a lighter ring around  the edges of sand or gloss coat. Anyway to avoid this? Is it simply technique? It’s not burned down to the cloth so I’m not quite sure why it happens. Will styrene take it out?

    Howzit larry, A picture would help but either you are sanding into the hotcoat on a gloss but if it's a sanded finish I have no idea.Aloha,Kokua

If it’s what I’m thinking it is, it has to do with the sanding of the repair area. If you use a coarse grit paper to prep sand, you get the halo. Once the patched area is hotcoated and you go to sand, the more you sand as you feather the edge, the smaller the circle of patch, the smaller the halo, right? Make sure you fine sand the area around the ding when you prep so when you sand through the hotcoat and feather the edge you don’t exposed the rough grooves below the hotcoat/patch around the edge.

Did that make sense?

I think I know what you’re talking about. You’re sanding away some of the glass yellowing during the repair and there’s not really anything you can do about it.

 

 

I think its bc you didn’t prep sand the area and the hotcoat is peeling instead of sanding so it doesn’t blend with the layer below it but can’t say without good pics.

   Howzit nj,Having a hard time making sense and the only time I have seen weird things is when the sanding doesn't go into the preped area and you see the edge of the hotcoat over non sanded preped area. Aloha,Kokua