Percival P. Cassidy wrote:
Now that the temp. has dropped below 70 again, I've been trying to strip
paint off the outside of a steel entry door again, but after half an
hour, except for the odd small patches where paint is coming off when I
scrape it, all that's coming off is a clear film (presumably the dried
stripper) leaving the paint underneath virtually unscathed.

The previous owners left none of this paint behind (they left others),
so I have no idea what it is. Supposing it is an epoxy? Would that
behave the way I'm seeing, and would that indicate that some
extra-strength stripper is needed?

Perce

Okay, since the existing paint is so impervious to your efforts, _why_
would you want to mess with it? Unless it's horribly irregular. (If it
ain't broken ... )

Assuming you've a reason to paint it, which is your call of course, I'd
prep it, prime as necessary, and paint it. Meaning:
1. Sand and scrape to remove irregularities and help new paint stick.
2. Prime as required, mainly related to having finish coat cover. Sand
lightly when dry.
3. Take door down, and apply finish paint with it horizontal, or as
close as possible to horizontal. Assuming you want good job.

HTH,
J