I am installing an invisible fence. The instructions say to cut a slot for
the wire in the asphalt driveway with a masonry blade in a circular saw.
Presumably there are different kinds of masonry blades. What do I need for
this? Should I do it all in one pass, or make a few of different depths?
if you have a circular saw go to ACE hardware store and buy some
masonary blades for it... cost about $3 to $4 each... you gonna need
more then one blade as the blades are made like a grinding wheel between
two sheets of cardboard and it wears out pretty fast..... practice and
see what happens.... you only gonna get a cut about 2 in. deep with any
circular saw(just like you can cut a 2 by 4 but not a 4 by 4 " with a
circular saw.... hope this helps.
<< Presumably there are different kinds of masonry blades. What do I need for
Check out the (low cost) Chinese diamond blades from your big box store or
other source. They are much handier than abrasive types because they don't wear
down. If you go slow you can do it in one pass. When you're done with it for
this first job you will find it useful for all manner of other chores involving
masonry, bricks or whatever. The one I bought a few years ago has surprised me
with it's durability. I still have a whole bunch of abrasive blades in unopened
packages that I may never use. HTH
On 22 Oct 2003 03:41:11 GMT, email@example.com (Joe Bobst) wrote:
I would second this. I bought a DeWalt masonary diamond blade for
about $18 from HD to knock down the curb at the end of my driveway.
Made about 70 cuts up to about 2.5 " deep and maybe 6" long. Finished
up with a chisel to knock out the sections. By the end of the
cutting, the saw was straining a bit indicating the blade was
getting dull. It probably will still be okay for a few more cuts
Radio Control Aircraft/Paintball Physics/Paintball for 40+
Layout your fence so that the line crosses at an existing expansion joint or
saw cut. That way you'll only need to use the blade to deepen/clean-out the
existing cut/joint. Almost any masonry blade from Lowes/Home Depot et al
will work for that. Caulk over the saw cut with grey silicone to keep the
wire from working its way out.
If you absolutely MUST cut a new kerf for the fence go rent a wet saw for
that purpose. Snap a straight chalk line and work slowly. Otherwise you'll
be looking at a crooked line until you either sell the house or pour a new
This is Turtle.
I just got through with a concrete cutting job on a conduit crossing a
concete walk way. It took 19 abrasion blades on a skill saw 7.25 inch size
blades to cut 2 inches down and 10 foot across walk way. then Bust the 3
inch slot out of the concrete next to the wall or door way. it was a pour
over the old slab and I was cutting the newer concrete walk way. Them Rocks
are hell. Harbor Freight has the 7.25" abrasion blades for a skill saw for
$1.68 each. If you have a lot of gravel / You need a lot of blades / mine
Now you can get you a Diamond cutting blade to do a better job but the cost
is higher. If you got to go 20+ feet it might be cheaper with diamond
Happy Slab cutting to you.
Best option is rent a masonry saw. You'll pay more, but get a
one-pass cut that's deep enough. If I were doing it, I'd buy a couple
cheap masonry cutoff blades, they're like grinding wheels more than
saw blades, and work slowly at full depth.
On Wed, 22 Oct 2003 00:26:43 +0000, Wade Lippman wrote:
I just did this about two weeks ago in my own asphalt driveway. At first,
I was going to make the drive to go get my FIL's concrete saw, but I
figure'd I'd try the 7 1/4" abrasive blade in my circular saw first --
save an hour in the car maybe.
Worked like a champ. The blade cost a little over two bucks, and
performed pretty well, considering. It's a stinky, dusty job, so make
sure to wear eye protection, and I'd suggest a mask too.
Easiest part of the job. (Definitely easier than training that simple
dog of mine. <g>)
On Thu, 23 Oct 2003 22:34:33 +0000, Wade Lippman wrote:
Bought two, and the first still seems fine. Chuck D. pointed out that
concrete is much tougher than asphalt, and he's absolutely correct. If
you have asphalt (and your first post says you do), you'll be fine.
I do almost all of my own projects, but I've never cut asphalt before. It
seemed like it would be difficult, but believe me it's no big deal.
You can even see a side-profile of all the aggregate pieces mixed in there.
Go for it!
PS: I probably went too deep, a solid 3/4 of an inch. I spent more
time filling the cut to my satisfaction than I did making the cut in the
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