Chipex scratch repair kit - deep scratch

[ITP]

Got some deep vandal scratches on the old family bus. Doesn’t need to be perfect as it’s 18 years old 150k miles so I thought I’d just improve the look by using this kit to add some paint as I’m pretty sure it’s through the clear coat.
Question being, is it worth using a bit of, say 2000 grit first to knock off the rough edges of the scratch?
Kit says just to add paint to above surface the use blending solution to bring back, but I’m guessing it may be less noticeable with a smoother transition?

(The scumbag did both sides by the way, all 4 doors and a couple of wings too!)

[Dog Biscuit]

No, looking at that pic I'd start applying and building up layers

You can consider a light flatting at the end of the process if needed

[E-bmw]

Not usually a fan of their stuff but Halfrauds touch up kits have a little glass-fibre brush for removing loose paint bits, and in the colour/primer/clearcoat there are VERY fine brushes that are excellent for exactly that kind of scratch.

They are basically about 4/5 eye-lash sized hairs and they are excellent on fine scratches like that.

I have used them several times to pretty good results if you take your time & do lots of thin passes rather than a few thicker ones.

There is also a very fine abrasive foam pad that is great for when you are getting to the end of the coats.

[ITP]

The chipex kit brushes are not like hairs, just a small blob so puts a more of blob on the scratch, maybe it’s better for chips, we’ll see.

[E-bmw]

ITP said:

The chipex kit brushes are not like hairs, just a small blob so puts a more of blob on the scratch, maybe it s better for chips, we ll see.

The Halfrauds kits have a tiny "syringe-like-tip" for chips also, the "lid" comes off 2 different ways one is the chip end, one is the fine brush end.

[Peanut Gallery]

I had a reasonable result from using a toothpick as a paintbrush, then using a very fine sanding block to sand it back to flat.

I used this type of sanding block - Meguiar's K1500 Mirror Glaze Professional Unigrit Sanding Block - Wet Sanding.

Def took it from a key scratch that stood out like a sore thumb to one that could only be seen from close up. (then someone threw brake fluid over the car)

[E-bmw]

Peanut Gallery said:

Def took it from a key scratch that stood out like a sore thumb to one that could only be seen from close up. (then someone threw brake fluid over the car)

Where do you live?

I will make sure to avoid the area!