Cleaning resin parts

[topside]

Bought some resin parts from Fireball for a Super Bee build.

Washed everything with dish soap & warm water.

The white parts took Tamiya primer fine, but a couple of parts that came in grey fish-eyed pretty badly.

What did I screw up, and what's the fix ?

Thanks in advance.

[mopar]

I soak my resin parts in one of the bleach white cleaners and then wash them off with soap and water.

[mopar]

[topside]

OK- I have the purple stuff, but I'll hit AutoZone for the Bleche-Wite.

[mopar]

I let the parts soak for about 30 minutes and use a soft brush when I’m rinsing them off.

[superstock]

do what mopar said....also yall can usa the tape trick....stick tape to resin parts..if it sticks to part, it is clean...if doesnot stick to part..it is not clean....superstock

[topside]

Thanks for the replies - and the tape trick makes sense.
I need to correct myself: The resin parts from Fireball have a grey color. This is the 1st time I've had an issue.
The other resin parts are from Harts Parts, white in color, no issues.

[BUCKY]

Are the grey parts 3D printed and the white parts cast resin? I'm just speculating, but that might make a difference. I've not messed with resin parts much, and I've not had any 3D stuff, yet.

[topside]

I don't think they're 3D printed, but I've had 3D parts that took primer & paint without issues.
Probably just a mold-release agent that I under-estimated...

[Mr. E]

I use the Purple stuff to clean my parts and have not had any issues. Just soak them for a half hour or so then wash with dish soap and water.

[tubbs]

good to know. i heard wesleys is good for cleaning any parts.