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Cutting a board from the top Marilyn & Bob 11-08-2007
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Posted by Marilyn & Bob on November 8, 2007, 12:42 pm
In the tenants' apartment in our 1840's townhouse a portion of the wide
plank soft pine floor has cracked. My intention is to cut out and replace
the cracked piece with a patch of modern clear pine stained and polyed to
match the rest of the board (it is under a rug anyway). The patch would be
three inches wide between two joists (22" OC) while the original board is 8
feet long. In order to do this I have to cut out about a 3" wide piece of
this board out across the top of one joist. So I only have access from the
top of the board. My guess is the best way to do this is with a sharp
pointed knife. Do you think either one of these would work:

http://www.leevalley.com/wood/page.aspx?c=2&p=31080&cat=1,130,43332,43393&ap=1
or
http://www.leevalley.com/wood/page.aspx?c=2&p=54870&cat=1,51222&ap=1

(my guess is the Murphy Knife set would be better for cutting from the top
with the knife at an angle)
or what about a simple utility knife? Any other thoughts?
--
Peace,
BobJ




AppliancePartsPros.com, Inc.
Posted by Noozer on November 8, 2007, 12:46 pm

> In the tenants' apartment in our 1840's townhouse a portion of the wide
> plank soft pine floor has cracked. My intention is to cut out and replace
> the cracked piece with a patch of modern clear pine stained and polyed to
> match the rest of the board (it is under a rug anyway). The patch would
> be three inches wide between two joists (22" OC) while the original board
> is 8 feet long. In order to do this I have to cut out about a 3" wide
> piece of this board out across the top of one joist. So I only have
> access from the top of the board. My guess is the best way to do this is
> with a sharp pointed knife. Do you think either one of these would work:
>
> http://www.leevalley.com/wood/page.aspx?c=2&p=31080&cat=1,130,43332,43393&ap=1
> or
> http://www.leevalley.com/wood/page.aspx?c=2&p=54870&cat=1,51222&ap=1
>
> (my guess is the Murphy Knife set would be better for cutting from the top
> with the knife at an angle)
> or what about a simple utility knife? Any other thoughts?

What's wrong with a circular saw? Just be careful of the depth you set it
to. You'll still need to finish the corners though.

A rotary saw may be better for this job, but they can be quite hard to
control.



Posted by dpb on November 8, 2007, 12:53 pm
Marilyn & Bob wrote:
> In the tenants' apartment in our 1840's townhouse a portion of the wide
> plank soft pine floor has cracked. My intention is to cut out and replace
> the cracked piece with a patch of modern clear pine stained and polyed to
> match the rest of the board (it is under a rug anyway). The patch would be
> three inches wide between two joists (22" OC) while the original board is 8
> feet long. In order to do this I have to cut out about a 3" wide piece of
> this board out across the top of one joist. So I only have access from the
> top of the board. My guess is the best way to do this is with a sharp
> pointed knife. Do you think either one of these would work:
>
> http://www.leevalley.com/wood/page.aspx?c=2&p=31080&cat=1,130,43332,43393&ap=1
> or
> http://www.leevalley.com/wood/page.aspx?c=2&p=54870&cat=1,51222&ap=1
>
> (my guess is the Murphy Knife set would be better for cutting from the top
> with the knife at an angle)
> or what about a simple utility knife? Any other thoughts?

What kind of "crack"? In general for an 1840's vintage floor, I'd tend
to think it part of the ambience unless it is split so badly as to be a
safety as opposed to cosmetic defect. Pictures?

What's beneath the floor, anything? I don't think the knife is a very
useful tool for the job, whatever it is. The other poster's suggestion
of a circular saw at the proper depth is reasonable, particularly if you
had a small diameter trim saw (like one of the cordless 5" jobbies).

Failing that, I'd like to see what we're actually talking about for a
real plan of attack...

--

Posted by Harry K on November 8, 2007, 1:20 pm
> In the tenants' apartment in our 1840's townhouse a portion of the wide
> plank soft pine floor has cracked. My intention is to cut out and replace
> the cracked piece with a patch of modern clear pine stained and polyed to
> match the rest of the board (it is under a rug anyway). The patch would be
> three inches wide between two joists (22" OC) while the original board is 8
> feet long. In order to do this I have to cut out about a 3" wide piece of
> this board out across the top of one joist. So I only have access from the
> top of the board. My guess is the best way to do this is with a sharp
> pointed knife. Do you think either one of these would work:
>
> http://www.leevalley.com/wood/page.aspx?c=2&p=31080&cat=1,130,43332,4...
> orhttp://www.leevalley.com/wood/page.aspx?c=2&p=54870&cat=1,51222&ap=1
>
> (my guess is the Murphy Knife set would be better for cutting from the top
> with the knife at an angle)
> or what about a simple utility knife? Any other thoughts?
> --
> Peace,
> BobJ

You will be in for a looooonnng project trying to cut it out with a
knife. I consider it in the 'impossible' range. Yes, using a saw
from the top will cause a rough cut (splinters pulled up) on the cross
cut. To avoid that make a cut with a very sharp knife and cut just
inside that. The rip cut shouldn't be a problem.

Harry K


Posted by EXT on November 8, 2007, 1:41 pm
Modern clear pine will not be the same thickness as your antique pine floor
nor will it be close to colour or grain even with stain. Is it possible to
lift the entire board out and glue or repair it and replace it back? This
would look much better and fit in with the age of the building.

You may also have to put some cleats on the side of the joists and span the
joist with a pine board or plywood installed flush with the top of the joist
to support the cracked antique board. Your lack of description of the crack
makes it hard to suggest real solutions that would work for you.

> In the tenants' apartment in our 1840's townhouse a portion of the wide
> plank soft pine floor has cracked. My intention is to cut out and replace
> the cracked piece with a patch of modern clear pine stained and polyed to
> match the rest of the board (it is under a rug anyway). The patch would
> be three inches wide between two joists (22" OC) while the original board
> is 8 feet long. In order to do this I have to cut out about a 3" wide
> piece of this board out across the top of one joist. So I only have
> access from the top of the board. My guess is the best way to do this is
> with a sharp pointed knife. Do you think either one of these would work:
>
> http://www.leevalley.com/wood/page.aspx?c=2&p=31080&cat=1,130,43332,43393&ap=1
> or
> http://www.leevalley.com/wood/page.aspx?c=2&p=54870&cat=1,51222&ap=1
>
> (my guess is the Murphy Knife set would be better for cutting from the top
> with the knife at an angle)
> or what about a simple utility knife? Any other thoughts?
> --
> Peace,
> BobJ
>
>
>



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