Remove primer paint from bodywork

[cedrichn]

Good morning all,

I am a "not too bad" DIY mechanic, but pretty rubbish at taking care of the bodywork of my cars...maybe that's why I bought some with already scratches on them

Anyway, I recently repainted the wheel arches of my car due to rust (Mazda MX5 - Light grey color) and repainted them with rust protection + etch primer + Hammerite light grey (good enough for the arches ).
Sadly, I thought I protected the bodywork well enough, but when removing the newspaper, I realized that I have few "patches" (approx. 5x5 cm) of primer on the bodywork of the car :/

I did some research, but I am kind of lost between how harsh the polish need to be (if it is polish I need?), how to apply it (I only have my hands), if I need to use sandpaper (1500? wet ?) before, and how to protect it after (wax?).
Youtube is now, to my mind, a mess: too many informations, too many videos, to many "sponsored" ones....

So I thought of here Just need a good result, doesn't need to be amazing at all Just trying to improve my DIY skills and bought some products I can re-use after

Thanks a lot !

[LennyM1984]

Assuming that the oversprayed patches weren't keyed beforehand, you may want to try a claybar as your first step.

[steveo3002]

cellulose thinners will wipe it off if its over orig paint

will destroy it if its been rattle canned

[cedrichn]

Thanks for your feedbacks !

To give more details:
- The etch primer was applied by can
- The primer in "unwanted area" is on original paint (I guess )

[paintman]

Quick removal involves thinner on a rag.
Downside is it could take lots of other stuff with it.

Bit slower is 'Clutch & brake cleaner'.
Not as aggressive as thinner but can still take other stuff with it.

Much slower is compound on a polishing cloth. Use the cloth on your finger much the same as bulling boots/shoes (if you don't know what that is ask any member of your family that has been in the services )
More precise & it takes much longer but you have the option of instantly stopping if it starts taking other stuff off.

[cedrichn]

Hi,

Thanks for the ideas! Did try the clay yesterday, and despite being amazing at what can be removed on a light grey car, the primer paint stayed... I also tried a light polish I had at hand, but didn't do anything to that...

Will try the other ideas then Thanks !