On Apr 19, 9:27*am, Steve Barker wrote:
On 4/19/2012 7:49 AM, wrote:





On Thu, 19 Apr 2012 01:55:03 -0700 (PDT), bob
wrote:

On Apr 19, 3:54 am, wrote:
Trying to cut away large sections of walls to be removed, which are
plastered with lath and plaster (not sheetrock). *This involves cutting
thru the exterior of the house siding, 1" boards under it, and some
studs. *I was using a chainsaw, which worked fine for the first couple
feet, but then the teeth got real dull. *I was careful to avoid nails,
but it's hard to keep from hitting that plaster, since there are globs
between the laths.

I just sharpened the chain again, but decided I'll have to sharpen this
chain many times before I finish this job, and will probably have to buy
a new chain by the time I'm finished. *I think that my sawsall might be
a better choice since the blades are cheaper and much easier to replace.
My question is the type of blade to use. *Do they make any blades
intended for demolition? *I will continue to do my best to avoid nails,
but there is no guarantee, and I'll hit at least some plaster no matter
what. *Do they make carbide tipped blades for a sawsall? *(I may try to
use my circular saw with a carbide blade for the straight cuts too). At
least with the circular saw the depth of cut can be controlled better to
avoid the plaster. *However, the circular saw cant do much for cutting
out studs, which is where I must use the sawsall, and where it will hit
plaster.

One other thing, there is pink fiberglass insulation in the walls. *Does
fiberglass dull blades? *While it's easy to cut, I wonder if fiberglass
acts as an abrasive to dull them, since it is a glass product??????

Thanks

remove the inner lathe and plaster wall and insulation FIRST. which
allows inspection for hidden hazards like wires, plumbing etc
etc.......

put some chip board over the inner wall temporarily if necessary

Good ideas, but this is a demolition job of the old part of the house.
The newer part was already cut away and walled off. * No plumbing in
there since it was removed first. *If I cut wires that dont matter, the
power is off and all the wire is being very old K&T or cloth covered
romex which will be sold for scrap. *While removal of plaster would
help, because of fallen parts of the roof and other things that
collapsed, it's too dangerous to go inside. *The walls are being cut
into sections from the outside and dragged with machinery to a burn
pile.

now given THIS information, i'd just put heavy cable or chain from
window to window, and pull away.

--
Steve Barker
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