On Feb 16, 9:27�pm, "MiamiCuse" wrote:
I posted an inquiry a few weeks ago about cutting old plastered wall that is
has af gypsum lath as a double layer wall board.

I need to cut small holes on these existing walls for electrical outlets,
intercom units, and also old demolished walls that have unclean tearouts at
corners that have embedded wire meshes. �Initially I tried to use a
recipricating saw, no luck, then tried a rotaty tool and that worked fine
for like 5 minutes, then today I tried an angle grinder and it worked.

I knew it would be dusty, so I prepared and worn an extra layer of clothing,
I put on a cap, a twin catridge respiratory mask, a eye protecting mask and
went to work. �It was DUSTY. �When I cut the corner joints at the ceiling
there were so much dust flying it's like snowing right into my face. �I
forged ahead and kept going. �Soon I can't see the chalk lines I drew
because it was so dusty. �I opened the doors and the dust started to float
outdoors and it does not settle, it seems to float up.

I took my mask off and it has dust inside the mask, which was unexpected
since I was wearing it very tight. �Next I have this gritty taste in my
mouth, did the dust get inside the respirator? �I looked at myself and I am
like snowman. �I had some of this dust in my hand and it didn't feel like
dust it's like silt and it's all over me. �I am starting to worry....does
plaster (built in 1972) have asbestos? �It seems to have gotten inside every
of my pore, I mean, I was wearing long pants outside and shorts inside, and
I had my cell phone inside my short back pocket. �When I cleaned up and took
out my phone, I flipped it open and it opened half way, dust got inside the
hinge and clogged it! �How does it get past two layers of clothing?

I am only half done, after doing this for about six hours, but I am
hesitating to go forward without knowing more about this dusty silt and if
it could be a health hazard. �Is there a mask that can protect against this?

Thanks,

MC

MIGHT have asbestos in it......

personally if i am making a big hole in a plastered wall i use a
hammer, and occasionally a chisel.

sawzall or jig saw tends to loosen plaster from wallboard and makes
tons of dust.

this advice does not apply to lathe and plaster