Primer interaction

[BarleyBop]

Got a bunch of aftermarket accessories together, mostly resin. Along with two 'sacks' in a more rubbery material.
Primed with Army Painter black primer from rattle can.
One hour later, retrieved from spray booth, all felt dry to the touch.
Two days later, the sacs are glossy, sticky and definitely not dry!

Close inspection of paint label reveals ingredients:

Probably not salvageable, but any suggestions on either how to stabilize, or remove the paint before it dissolves the sacs?

 

[urumomo]

haha , dissolve them ?
what are those made of ?
thermoset or are they injection molded .
I looked up that company ,, interesting .

https://storage.googleapis.com/cdn_tap/safety_sheets/SDS Colour Primer EN 03122025.pdf

 

[BarleyBop]

Yup, I have a knack for digging up "interesting"!

• They have a seam which runs all the way around.
• Also what looks like an injection point on the bottom.
• They are rubbery enough that I can bend them and they bounce back.

Bought these years ago on clearance table for railroad and dio supplies.

 

[urumomo]

mmm , that xylene is the only one out of that 3 that could be the issue
You can probably just scrub it all off with a toothbrush and soapy water

 

[BarleyBop]

Will try that, thanks. Then I have to figure out what will stick to paint them!

 

[urumomo]

it's def an alkyd with all that dimethylbenzene in there , so any alkali solution like super clean , oven cleaner etc if it won't come off with just bristle violence in the sink

 

[Ron2]

Will try that, thanks. Then I have to figure out what will stick to paint them!

I use this and have ever had an issue.

 

[Ron2]

This stuff is also good but it goes on a bit thick

 

[BarleyBop]

I use this and have ever had an issue.

Yup, have used Mr Surfacer too.
Picked up the Army Painter last year when other wasn't available in LHS.

 

[Wig41]

It's amazing how many different chemicals we somehow manage to get into with this hobby and when they are labeled the way this Army Painter Colour Primer is we just blindly go about or hobby and fall into these pitfalls. I hope you can find something that will work on these sacks. Bummer of a way to learn things.

 

[49thStateRT]

It's amazing how many different chemicals we somehow manage to get into with this hobby and when they are labeled the way this Army Painter Colour Primer is we just blindly go about or hobby and fall into these pitfalls. I hope you can find something that will work on these sacks. Bummer of a way to learn things.

Ha I was just thinking how nice they actually list the ingredients. So many of our hobby products do not list even those basics, probably not enough room with all the warnings, or maybe they are in Japanese. So we just guess and then screw up and ask on this forum and get our chemistry education for the day.

 

[BarleyBop]

Bummer

... rough paper towel with a bit of generic (oil) solvent took it all off. Followed by wash and rinse with mild soap and water.
Funny thing is that the primer worked great on the resin and plastic parts.

Let's see if I can get paint to stick!