Hold the cardboard up to the brick, and trace the opening with a pencil or
pen onto the cardboard, then take the cardboard down and cut it along the
line you traced. Check the fit of the cardboard template by holding it back
up to the brick and trim as needed. Once you are happy with the template,
trace it onto the board and cut the board along the line you traced.
Cut the cardboard so it's close to the desired shape.
Hold it in place and scribe it to fit. Cut it on the
scribe line. This should get it near perfect. If not,
tweak it 'till you're happy with it then use it as a
Well now, you failed to mention that, didn't you. Perhaps you should be a
little more specific with your questions. If all you ask is 'how do I cut a
piece of wood', don't be surprised when all of the responses are 'with a
"Hire someone who is competant to do the job."
I've had city workers, power company people,
carpenters, electricians, plumbers, and all of
them botched the work, I'm more competent then
Rumpy, how can I get any more specific, all I
need is to cut a piece of wood to fit inside of
a brick archway.
Lew, your calling me incompetent when you didn't
even spell it correctly.
Great, then trace it and cut it. Not being able to get a pencil in to trace
it is an important detail that you left out. Peoples answers will only be
as good as the question you post. I'm not trying to rude, I'm just saying a
picture or a better description would help. The way the original question
was stated, it sounded like a no brainer, just trace it.
Given what we now know, it is going to be a little more difficult than that.
How tight do you want the fit? Do you intend to actually perfectly match
the brick with protrusions on the wood to fit tight against the mortar
joints, or are you just trying to get the basic shape? Given the nature of
brick, I would be willing to bet a cheese burger that the arch is not
perfectly circular or parabolic or any thing else that could easily be
reproduced mathematically, so one way or the other, you will need a
template. As someone else has suggested, roughly cutting a piece of
cardboard to fit the opening, then scribing an exact cut line onto might be
the way to go. Another idea might be to buy a large flexible drawing curve,
(one of those plastic coated wire things), and bend it to match the contour,
then trace it. For that matter, maybe just a piece of wire would do.
Not sure if this is large enough, but it's the type of thing I'm thinking
Here are a few scribes while I'm at it:
Rumpy, I know I'm not going to get a perfect fit,
there's going to be gaps, as specially because it's
an old house. I just thought instead of always scribing,
there was a mathematical approach, thanks.
Upscale, at least my sentences make sense.
"you don't make worse any errors yourself"
there are some mathematical approaches that make sense in various
situations. some of them could be described as advanced scribing
for your situation and what I percieve to be your skill level, the
snipping away at a piece of cardboard approach is effective and
When editing it, I neglected to remove either worse or any. And you did
understand what I was saying even though I left the sentence uncorrected.
Better be prepared to get criticised for those things that you criticise
others on or you're not going to do too well here.
Well, ok, if it is truly circular, and you have a 3" segment rise over a 35"
chord length, the radius of the curve is close enough to 52-1/2". I suppose
you could either use a circle cutting jig on a router or a string and pencil
to draw it. Either way, if it's not close enough, post more accurate
measurements and I, or some one, will find the radius for you. (I will be
out of town all of next week, fwiw).
BTW, I admit I cheated and drew it in AutoCAD. Not long ago there was a bit
of discussion here on how to calculate. Maybe some one else will re-post
Yes, there is a mathematical approach. If you know the length and height of
the arc, it is easy to calculate but Rump is quite correct in stating that
it will be less than perfect. In my experience when trying to fit anything
to an existing architectural element, throw out the calculator and do it
manually, it will fit better.
Only five, don't you like them :-). We now have only eight, all registered
PixieBobs. We did have nine. I hope you do not know what FIP is and I hope
you never find out.
This is the Cattery all of our blood lines are from, (not our site):
Rumpy is in the gallery pages a few times, (as are most of our cats), but I
cannot seem to send you a link to just one picture. He's the one on splash
mountain at Disneyland, but I think the picture of him sitting up on the bed
in a pile of catnip is a better one.
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