I want to patch interior plaster on a brick wall. The original is hard as
nails, really tough to sand (by hand, anyway). It is also very fine grain and
smooth. I went to the building supply place and was handed a bag of "patching
plaster" (50 lbs). It is labeled "for interior use only".
After applying it, I find that it is much softer than the original plaster,
and not as smooth.
What is the original plaster called, and where can I get it? Is this a
specialty of bricklayers, or something? I've been to two other supply places
and no one has anything but the same soft "patching plaster".
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