do u find the fingernail test reliable?

[minuteopposite66]

just would like to share that even if i use my pinky, some paints if not all still scratches off. And this is even after weeks of drying it.

are there any other tests that you're doing to check your paint? or is there like an acrylic paint that will pass this pinky or thumbnail test? any inputs are very much welcome..

 

[UnderDog]

I usually use a simple thumb twist test. just twist your thumb against the paint. A properly cured coating will feel dry when you do tht

 

[Mr.Brush]

just would like to share that even if i use my pinky, some paints if not all still scratches off. And this is even after weeks of drying it.

are there any other tests that you're doing to check your paint? or is there like an acrylic paint that will pass this pinky or thumbnail test? any inputs are very much welcome..

Funny that you mention the fingernail test because someone just brought that up to me on a project too!
I actually just looked it up to see if it's common knowledge, and then I saw your post!
You're absolutely right that dry to the touch doesn't mean fully cured.
Acrylics, especially in thick layers, can take months to truly harden, so I wouldn't try the fingernail test myself.
I prefer to wait out the recommended curing time, which I know can take several months.
That's why I often advise people to build thin layers rather than a thick one.
Once it's cured, I'd also apply a removable varnish for added protection and durability against scratches, dust and UV light!

 

[Polishedman]

Yooo, I know the struggle, some paints just never fully cure right, I do the thumbnail test too, and honestly, most soft body acrylics fail it unless they're sealed, lol if you want it to really hold up, try a heavy body or artist grade acrylic and always topcoat with a good varnish

 

[Pikazzo1]

Honestly, I know a lot of people who use this technique, but I'd like to let is dry and don't bother too muhc checking it. I'm trying to plan ahead and leave it 24 hours and keep my mind at ease.