"MiamiCuse" wrote in message
...

I feel bad about having someone holding the hose next to it. 60% of the
cuts are actually above the shoulder heights some in the ceiling so it is
really difficult to get someone to be on a ladder next to you holding a
hose
that high anyways I thought I would just "tough it out" but boy I did not
know it could be SO dusty.


The person holding the vacuum does not have to be on a ladder. They can use
a length of plastic pipe secured to the hose and stand on the floor.



The thing that really is challenging is that the dusty blurr up the eye
protector so fast that while it's cutting it's hard to see the chalk line
I
scored.

Vacuuming as you go will solve this problem also.

The other problem I have is the plastered has metal wire meshes in it but
only around inside corners. When I cut that I am getting sparks from the
grinding wheel going across and I had to go real slow. I am concerned may
be I could be cutting an EMT pipe, or a AC condensation pipe or other
hidden
metallic things, probably not but I don't like the flying sparks.

You might consider using one of those roto zip tools. The carbide cutter
will cut through the metal lath, and they sell a dust extractor that
connects directly to your shop vac. See
http://www.rotozip.com/Shop/Category...=19&HID=188052

As far as hitting pipes or wires in the wall this is not likely as they tend
to be located in the center of the stud, well back from the inside of the
plaster.




Now I have an irregular size holes in the ceiling, in some
cases wider than the knock out circle size of the hi-hats, I am not sure
what to do with that, I don't have a hole saw that could cut this
plastered
wall in perfect circle, and the holes may be wider than the needed
circles.
I can't patch half an inch of an irregular sliver the remodel light
fixture
needs to "clip" onto something. I think my only choice is to go to every
wrongly cut hole in the ceiling and cut a 16"x16" square hole, then put in
5/8 "normal" sheetrock and recut the circle?


How much bigger did you cut your holes? If it is just a bit the trim should
cover, but if you are way over then you might want to just patch the oops.
Several ways would work First you have a large hole in your ceiling so you
can insert some sort of bracing to hold a fabricated wood backing to support
a patch made from drywall compound.

The other way would be to make a plug that is the size of your desired hole
and wrap it with polyethylene. Now you can fill the void with new plaster,
and when it is set knock out the plug and peel away the plastic leaving the
correct size hole. Styrofoam might work here also.

The key to patching plaster is to remove any crumbling around the edges
otherwise the patch will fail.

You also might want to avoid sharp inside corners when you cut a hole. A
rounded corner is less likely to be the start of a crack than a square one.

--

__
Roger Shoaf

Important factors in selecting a mate:
1] Depth of gene pool
2] Position on the food chain.