How do I achieve this textured finish?

[Jelly_Sheffield]

Like this:

Kinda looks like stone-chip, but it's thicker and more textured, so I think it's a different product.



For background, having done the most pressing rust repairs on the MX5, there's another "fix now or regret later" section to address in the rear quarter panel:

However that goes into the textured paint that runs along the door bottom and outer cill, and the owner is very keen than any repairs should look as original as possible.

So I have been tasked with:

1) finding out what product is used to achieve that finish,

2) practicing on some sheet steel until I can demonstrate that it will come out as desired,

3) repairing it.

Any help greatly appreciated.

 

[Jelly_Sheffield]

I just bumped into the chap from our local motor factors who suggested "UPOL Gravitex Plus HS" which is a 1K that has to be gun-sprayed.

The specifically recommended against any of the rattle-can stone chips that he stocks in the shop if I wanted to replicate the OEM finish.

Anyone got experience of that product, or recommendations on application from experience of spraying similar?

 

[Pete.]

I can do that no problem - when I'm trying my best not to

 

[hotponyshoes]

Spraying from further away gives a rougher
texture.

If your using aerosol cans try preheating the panel and chilling the can.

 

[brightspark]

sp[ray the paint on un thinned and you will end up with orange peel

 

[Jelly_Sheffield]

Spraying from further away gives a rougher
texture.

Is this specific to the textured paint products?

In which case I will need to work out the optimal distance to replicate the OEM finish by trial and error, then give myself a guide for where to hold the gun so I maintain it.

If your using aerosol cans try preheating the panel and chilling the can.

I will spray it with a gun.

Probably the mini gravity feed gun for the textured undercoat, and a pressure pot for the basecoat and clearcoat.

sp[ray the paint on un thinned and you will end up with orange peel

I don't think that deliberately doing a bad job will work here, I will just receive instructions to sand it back and try again...

 

[hotponyshoes]

The proper guns are cheap enough and would get you a lot closer to the factory finish a lot quicker

 

[hotponyshoes]

Also invest in some soft-edge (round) masking tape or double some wide tape back on itself to bleed out the edges (unless the originals are sharp?)

 

[julianf]

Spray too close and too heavy.

 

[Jelly_Sheffield]

The proper guns are cheap enough and would get you a lot closer to the factory finish a lot quicker

I was going to ask what you meant by the proper guns...

But looking at UPol's TDS for Gravitex, it didn't specify a nozzle size and referred (not particularly clearly) to "UPol Gun/1"

A little bit of googling later, and that's apparently a "Raptor" branded gun specifically for spraying schutz type coatings.

Also invest in some soft-edge (round) masking tape or double some wide tape back on itself to bleed out the edges (unless the originals are sharp?)

Thanks, this is also good info, the original has a rounded edge and I wasn't really sure how to recreate that.

I also wasn't aware soft edge tape was a thing.

When it comes to this kind of painting I am 100% in "knows enough to be dangerous" territory, but I won't learn if I don't jump in and try right?

 

[Misterg]

I also have an MX5. I have heard previously that Gravitex was the stuff to use to replicate the OEM texture.

 

[Erie Fred]

I can do that no problem - when I'm trying my best not to

"that's not orange peel son.....that's banana peel"

 

[Slowcoach]

Are you 100% sure that’s the original finish? The finish in the first picture looks the same above the line as below. Are there stonechips that you can apply with a spray gun now as it used to be either the Shultz gun or an aerosol.

 

[Ali]

I always assumed the gravel chip area was paint on top of a protective material.

 

[Jelly_Sheffield]

Are you 100% sure that’s the original finish? The finish in the first picture looks the same above the line as below.

If you mean is the stone-chip OEM, yes all the NB MX5's seem to have it.

In terms of the recommended paint, Gravitex is apparently formulated to replicate this kind of OEM stone-chip layer, and is designed to be overcoated.

I'll be overcoating it with solvent basecoat and 1k clearcoat.

Are there stonechips that you can apply with a spray gun now as it used to be either the Shultz gun or an aerosol.

UPol has their own gun for applying it which appears to be an evolution of the Shultz gun.

I always assumed the gravel chip area was paint on top of a protective material.

That's how Toyota did it on my Hilux, which actually created a horrid rust-trap as soon as it got damaged enough to let water in.

Mazda used some kind of high-build stone-chip type paint between the primer and final finish.

 

[Farside]

If that's the original paint, it's one of the worst factory finishes I've seen.
Friday afternoon car?

 

[ajlelectronics]

If that's the original paint, it's one of the worst factory finishes I've seen.
Friday afternoon car?

My initial reaction was that it was merely a very poor paint job.

 

[steveo3002]

stonechip like gravitex via a spraygun and thinned a little bit , lower the pressure so it splatters out

used to do this exact finish on the older fords ..mk3 fiesta front panel etc

 

[RaceDiagnostics]

I used a gun like this for stone chip.

It's easy to replicate different finishes depending on the pressure used.

My preferred product is Dinitrol 447 as it's rubberised.

Here's are a couple of examples.

 

[prepman]

If that's the original paint, it's one of the worst factory finishes I've seen.
Friday afternoon car?

My 70's new Capri was...