I am going to pour a 4x5 or so concrete pad for our enormous stainless
steel grill. (it will be adjacent to the old pad so that the width of
the two pads together will be around 7-8 feet).
I know that I have to make borders with wood (for boundary with the
soil and felt (for boundary with existing concrete). But how would I
make nice rounded edges? With a finger?
I believe there is a special trowl you can use.... I imagine you'd
find one in better hardware stores...
you can probably make a cheap one from a cross section of PVC pipe
which is about the radius of the curve you want to make.
you might have to let the crete set up a little before
trowling... lest you get too much slump when you remove the form on
the edge you want to curve.
if you just want a "bullnose" (90 deg with a very small radius curve
to make it not sharp) edge, you can probably do this with the
form in place.
alternately, you can use a cut length of PVC in the form and cast it
upsidedown then remove it later.... bust most concrete applications
i've seen/read about have the person cast the counter in place.
hope this helps.
Verso l'esterno! Verso l'esterno! Deamons di ignoranza.
I needed to do the same thing to some 3x3 pads I put in. Didn't have an
edger, and my junky neighbor who has two of everything didn't have one
either. So, I just took a flat piece of sheetmetal and stuck it in next to
the wood and formed the edges by hand. Wait until the concrete has started
to get a little like jello, and you can do it easily. When I took the form
off, it looked just as good as an edger.
Or, you can shoot down to Homer's and get an edger for cheap.
The tool you are looking for is called an edger. It is not a finishing
trowel, you can't make an adequate one from a scrap of sheet metal, you
can't make it with a chunk of PVC pipe. If you have never used one
before, you might have some difficulty making a store bought one work.
Don't get on the concrete too early, don't force the rolled edge down
into the concrete, don't force the edger too deep for the float to bring
the surface back up, make sure you float out the ridge left by the
inside of the edger, get the weight off your broom (broom finish?) well
before the edge so you don't drag slurry onto your edge.
Tell us how it comes out.
Keep the whole world singing. . .
(remove the 7)
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