How to achieve this kind of finish

A popular aftermarket treatment of plastic gun grips involves “stippling”.  I’ve never done this, but I can attest to the fact that the plastic grips on a Glock can get slippery if your hands are sweating. 

The technique, I believe, involves a heated needle that is impressed into the resin.
https://www.google.com/search?q=stippling plastic&ie=utf-8&oe=utf-8&client=firefox-b-1-m

Glock-17-Grip-Stipple-1024x769.jpg
 
Packard said:
A popular aftermarket treatment of plastic gun grips involves “stippling”.  I’ve never done this, but I can attest to the fact that the plastic grips on a Glock can get slippery if your hands are sweating. 

The technique, I believe, involves a heated needle that is impressed into the resin.
https://www.google.com/search?q=stippling plastic&ie=utf-8&oe=utf-8&client=firefox-b-1-m

Glock-17-Grip-Stipple-1024x769.jpg
That would be too time consuming and too coarse for my liking. But a great idea. Someone mention earlier stippling paint and stippling brush. Another area for my research to go to!

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Cheese said:
sebr023 said:
I know there’s a paint by SEM which is called trim black. But maybe they make a paint for that type of texture too.

Edit: after a quick search, SEM makes a texture spray, and they have a video on how to apply for different effect.

Link:https://www.semproducts.com/product/texture-coating/39853#product-details

This is from the SEM bumper prep brochure.

[attachimg=1]
https://manage.semproducts.com/public/content/techsheets/TEXTC_3985 Texture Coating Flyer_0316.pdf
Make sense. Will go and get a can and try this project I believe. From what I’ve tried of the SEM product line up, I loved it.

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Packard said:
I suspect that the original wrinkled finish was the result from a paint application error.

I had such an error many years ago.

Spray enamel (rattle can) will carry instructions such as:  Re-coat times:  Within 1 hour or after 24 hours.

I recoated about 3 hours later.  That allowed the original coat to skin over, with the underlying finish remaining un-cured.  The application of a second coat at that time partially dissolved the top layer causing the finish to wrinkle. 

I suspect that someone many years ago did the same on some engine valve cover.  He moaned that he was going to have to sand off all the old finish and start over, but someone else said, “That looks soooo cool!”  And so wrinkled finish was born.

(Note:  The above is strictly a product of my imagination.  I have no idea how the finish came to be.  It is the antithesis of what an “ideal” finish should look like.)
That might be it.

But if I recall correctly, some sport version of cars came from factory with wrinkle paint valve cover. Like Honda SIR or Acura intégra type R comes to mind. But I may be wrong too.

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My cousin, who is a well-known artist (he did the art installations at the new World Trade Center) became known for his series on “doorways”.  He took photographs of doorways and then “enlarged” to full size by using a 000 paint brush and painting tiny dots on the paper.  Each image took months to produce. Another instance of “stippling”.

These images were reproduced as lithographs.  They are a part of the Smithsonian Art and Artists collection (Smithsonian Museum).

You can see them here, but you cannot appreciate them unless you view them up close.
https://americanart.si.edu/artwork/doorways-13802
 
Packard said:
I suspect that the original wrinkled finish was the result from a paint application error.

I had such an error many years ago.

Spray enamel (rattle can) will carry instructions such as:  Re-coat times:  Within 1 hour or after 24 hours.

I recoated about 3 hours later.  That allowed the original coat to skin over, with the underlying finish remaining un-cured.  The application of a second coat at that time partially dissolved the top layer causing the finish to wrinkle. 

I suspect that someone many years ago did the same on some engine valve cover.  He moaned that he was going to have to sand off all the old finish and start over, but someone else said, “That looks soooo cool!”  And so wrinkled finish was born.

(Note:  The above is strictly a product of my imagination.  I have no idea how the finish came to be.  It is the antithesis of what an “ideal” finish should look like.)

I'm thinking old Smith Corona and Royal typewriters from the 30's came with an original factory black wrinkle finish.

While working on cars in the 60's I accidentally "wrinkle finished" various items when I sprayed the wrong top coat on an existing finish. There was a definite order of paint types that needed to be adhered to otherwise wrinkle finish would be the result.

Was it lacquer first & then enamel...or was it enamel first and then lacquer? [scratch chin]

 
I don’t know the order either, but it is the same “defect”.  The second finish partially dissolves the first creating the wrinkle effect.
 
Also, cast iron has that kind of 'rough' texture too. I'll also check if truck bed liner can be thinned out to a more fine texture. thanks
 
The original picture is probably hair cell ABS as this is what the majority of auto plastic parts.
 
rst said:
The original picture is probably hair cell ABS as this is what the majority of auto plastic parts.
Thank you!

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