View new posts | View your posts Paint still tacky

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Why is the paint still tacky after sitting all night? Could it be because of sitting outside in the chiller temperature? Or could it be the rubbery, silicone type material? It's the door stopper piece that goes between the frame and the mobo. It doesn't make much sense to me. I thought paint was supposed to dry regardless. If anyone has any explanations, I'm listening.

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Nobody knows what paint you used, what exactly you painted, temperatures, conditions etc. All contributing factors to your needed reason.

If I was you I would say bring it inside where its warmer and let it sit until no longer tacky. If that doesnt happen in app 24 hours, sand it down, start again. If your painting rubber I recommend you use bulldog adhesion promoter. It will make the paint more flexible, you'll get a better bond and shouldnt have any drying problems.

If it is the rubber piece it is probably the material. A lot of time you need to paint that rubber/ vinyl type of material with a special paint. I would suggest using a clear coat to see if that helps. If that doesn't get the job done you might try rolling it around in some dirt.

if the paint is staying on it, put some talc on it.

That will get rid of the tackiness

Thanks for the pointers, guys. I was just concerned and wanted to get some feedback before I started into painting the pack itself. I'm using Krylon Satin Black and Krylon Grey primer. Any better suggestions on paint?

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That paint is good stuff, however it takes a long time to dry. I cant express just how good that bulldog adhesion promoter is. Ifyour pack is fiberglass though you should be fine with what your using.

There are a couple of materials that standard enamel paint just won't work with. Rubbery materials and polymer clays will sometimes stay tacky forever, with some softer plastics and chrome the paint will dry but flake or scratch off easily (like old house paint), and some foam materials will begin to dissolve.

Before painting a project, you should always test to see how the paint will react with the materials you're using (either by testing it on scraps from your project, or painting some hidden portion of the project that no one will see).

Although I don't have a ton of experience, I have had luck painting rubber with "Krylon Fusion". It's primarily formulated to bond with plastics (even the afore mentioned tricky ones that reject enamel), but it works on other materials as well. I used it to paint a rubber furniture leg tip, and it dried without any tackiness (it's usually safe to handle the object you've painted after an hour or so, but for best results give the paint a week to fully set up).

I've only used gloss and flat white in Fusion. Both go on pretty thin so they're a little difficult to work with, but that seems to be my experience with white pigments in general. I'm sure a darker color like black would be easier to use.

I tried using fusion on one of those door stoppers. Literally 3 months later, it was still tacky to the point of getting paint on my fingers. Fusion works for just about every surface imaginable (including INSIDE a saltwater aquarium!) but not that particular rubber.

TBH I'd skip the doorstop and get some rubber half-spheres from mcmaster-carr. Like these:

Thanks everyone! Useful info. I may just stick with the doorstop for now, since only touches the frame. But I may graduate to the mcmaster eventually.

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