On Thursday, March 30, 2017 at 10:27:07 PM UTC-4, Snags backup wrote:
I'm sitting here in my son's living room , where I have just replaced part
of the ceiling that got wet from an evap coil enclosure leak . Got the
drywall up and mud/taped all around , now I gotta figure out how to match
the texture . It looks like a sanded mud that's had a brush or something
swirled on the surface . Kinda random , some swirls and some more like
streaks . Applied about 1/16"-1/8" thick then swirled or whatever .
I need some suggestions , I've never done this before ...
--
Snag

This thread might help, although matching a previously applied pattern will
probably be difficult for a novice - or even for a professional.

http://diy.stackexchange.com/questio...eiling-texture

Different mixtures of paint (or mud?) and sand can be used as well as
different tools, and most certainly different personal techniques. That
thread includes the line:

"A quick google search reveals a number of pros complaining about how
hard sand finishes are to match."

There are many artists out there, each very talented in their own style, but
that doesn't mean that one artist could copy another artist's picture and
have the 2 "match". There's too much personality involved in the final
product. The same holds true for patterned ceilings.

It could be sanded mud or sanded paint - either pre-mixed or mixed on site.

As noted in that thread, it may take a lot of practice on some spare drywall
to get the mixture and pattern correct. Good luck!