Touch up advice needed for rusty scratches

[Isaac1]

A good rule of thumb is anything bigger than the size of a dime needs to by sprayed, and anything with rust needs sanding and prep with primer.

[RMcG]

Originally Posted by Isaac1

A good rule of thumb is anything bigger than the size of a dime needs to by sprayed, and anything with rust needs sanding and prep with primer.

Thanks Isaac,

Since there are two scratches, long and thin, is there anything like a "pen" for sanding to remove rust and a "pen" for applying primer? I know there are "pens" for applying touch up paint.

For the one "scratch" on the rear hatch, the bare metal/rust area is small, smaller than a dime. Is there anything that allows you to sand this limited area? Perhaps sand paper affixed somehow to a regular (non-Phillips head) screwdriver would work. Perhaps something like this scheme would allow sanding of the other scratches on the door and window frame.

Perhaps there are spray cans with tiny tubes in the nozzles like for WD40, see link .

Maybe I should just tape these areas with duct tape (for a tape that will protect against sanding), so that just a very small area around the scratches is exposed and then sand the exposed areas somehow. Then prime and touch up the scratches with brush or spray. On the other hand, the adhesive of the duct tape might be hard on the surrounding good paint & good finish, so maybe masking tape on the paint, with duct tape over the masking tape would be a better scheme.

Any comments from you or others will be appreciated.

Thanks,

R.