|
Posted by Mike Dobony on February 13, 2008, 9:57 am
On Wed, 13 Feb 2008 08:17:44 -0500, John Grabowski wrote:
>>I posted a query last week about cutting a straight line along plastered
>>wall with gypsum lath with a concrete block wall about 3/8" behind it and
>>PT furring strips in between, and it was chewing up the blade and someone
>>suggested using a skilsaw or jigsaw. I have not tried it yet but a similar
>>problem is happening on the ceiling where I need to cut circular holes for
>>recessed cans.
>>
>> The ceiling is also plastered over gypsum lath so overall thickness is
>> about 5/8". Will a normal hole saw work or I need special diamond blade
>> hole saw?
>>
>
>
> Special carbide hole saws are made for recessed lights. They are expensive
> but work great on plaster and lathe. Be sure to get the correct size. I
> tried my Dremel Rotary Advantage once on some recessed lights. The first
> hole or two didn't come out too well even though I was using the circle
> cutter attachment. By the fourth hole they were looking great until the
> tool froze up from all of the fine dust getting inside of it. I had to
> completely dismantle the Dremel to get rid of all of the dust. I haven't
> used it since.
You need a special rotary drill designed for drywall, like the Dewalt DW660
or Rotozip RZ01-1100. You might try some pawn shops for them also for a
better price.
| 
Yahoo! 
Google 
Windows Live 
del.icio.us 
digg 
Netscape 
XML Sitemap