In article ,
says...

On Mon, 16 May 2016 14:40:24 -0500, Leon lcb11211@swbelldotnet
wrote:

On 5/16/2016 12:43 PM, Mr. 2 Cents wrote:
Swingman wrote in
:

On 5/16/2016 9:29 AM, Greg Guarino wrote:
Not exactly woodworking, but ...

Two custom-built wooden exterior doors have developed cracks in the
paint, mostly where the original pieces of wood were joined. The paint
has flaked off to bare wood in those areas, leaving maybe 1" exposed,
but the rest of the paint is in reasonable shape.

We're having a guy come paint the door (this is a commercial building,
not my house), but he's a handyman at best (I didn't pick the workman).
We'll have to guide him.

After scraping away the cracked paint, what can we do to smooth the
edges that are left, and prep the door for (primer and) paint? Do we
sand down the edges? Or "putty up" the low spots? Hand sanding? Sander?
Grinder with flap disk? Something else?

Bondo wood filler, applied, sanded and painted, is usually what my
painters use to repair those type areas in doors.


https://www.youtube.com/watch?v=TM58R79VL98
[note to self; never ever trust any of this clowns repair advice]

Even though Bondo wood repair did not last long, it did last longer that
what you suggested.

The poster and video people were shills for "Better to use Abatron."

And if you look at their bad example of Bondo, it's pretty clear that
it's really a bad example of surface prep.