Robert11 wrote:
Hello:

Will be painting a portion of a ceiling, but not the whole thing.

So, I am faced with the problem of painting a nice, straight (junction)
line.

I thought I would just use the 3M Blue tape, but have read that this is
really only good for large "splatters" and protection, and not really good
for trying to define a line.

Reason apparently being, that no matter what one does, a little paint always
runs under the tape by capillary action if you paint over the tape in trying
to make the straight, smooth line.

So, how does one do this ?

Is there a special brush, or... ?

Special techniques, etc. ?

Any thoughts on this would be most appreciated.

Thanks,
B.

I have a fairly steady hand and feel I can paint freehand well enough
for this, so that is how I would do it.

If you want to use tape, start by doing the obvious things - get the
tape on straight, then go back over it to firmly press the edge down to
minimize the capillary action. But here is the secret trick to making
it work well: When you start to paint, set the brush on the tape and
drag across the boundary off the tape. Don't go the other direction
where you drag the brush from the ceiling onto the tape. And do this
with a *very* light coat of paint. Make sure there is not much paint at
all on the brush. Once you do this with the first light coat of paint,
that will create a seal at the edge between the tape and the ceiling,
so the next coat can be heavier.

Ken