in

igor

30/07/2004 2:50 PM

net dimension - rough lumber, resawing

As I carefully consider - with substantial help from posts I have read
here, TY - whether to buy finished lumber or "make" my own, I am thinking
about what thickness I will end up with.

If I start with 1" rough, resaw once with a BS, run through jointer and
planer, what thickness am I likely to net? I assume there are many
variables here regarding skill/technique. And, for example, with the BS,
is it harder to resaw down the middle if the stock is 2" wide versus 6"?

Also, while even a thin kerf TS blade takes more than a BS blade, might
resawing with the TS still net more because the cut will stay parallel to
the sides (and I have no experience resawing, or really much of any exp. w/
a BS)?

And, is the answer likely to vary depending on wood species - maybe because
it is harder to resaw well with harder woods?

One other thing re rough lumber - which I have never bought - if I use the
right way to finish it will I always end up with 3/4" thick wood? IOW, do
I have to watch out for rough lumber that is soo rough that even the best
finishing skills will leave me <3/4"? TIA -- Igor


This topic has 4 replies

Gg

"George"

in reply to igor on 30/07/2004 2:50 PM

30/07/2004 11:02 AM

It's even more complicated than that. 4/4 softwoods are 3/4 planed,
hardwoods 13/16, yet both are an inch to an inch and an eighth thick from
the saw. If they sand the boards like they do at the borg, may get less.

At my house, with a Delta 14" bandsaw, a 4/4 rough board will normally yield
a 1/2 and a 1/4 board with a Timberwolf blade. To get two 1/2" boards, I
have to go to a 5/4 board.

Now, depending on your planer, your hand, and your sawyer, you might do
better, but I find that half inch for small projects and 1/4 for framed
panels and bottoms/backs, is a pretty good way to cut.


"igor" <[email protected]> wrote in message
news:[email protected]...
> As I carefully consider - with substantial help from posts I have read
> here, TY - whether to buy finished lumber or "make" my own, I am thinking
> about what thickness I will end up with.
>
> If I start with 1" rough, resaw once with a BS, run through jointer and
> planer, what thickness am I likely to net? I assume there are many
> variables here regarding skill/technique. And, for example, with the BS,
> is it harder to resaw down the middle if the stock is 2" wide versus 6"?
>
> Also, while even a thin kerf TS blade takes more than a BS blade, might
> resawing with the TS still net more because the cut will stay parallel to
> the sides (and I have no experience resawing, or really much of any exp.
w/
> a BS)?
>
> And, is the answer likely to vary depending on wood species - maybe
because
> it is harder to resaw well with harder woods?
>
> One other thing re rough lumber - which I have never bought - if I use the
> right way to finish it will I always end up with 3/4" thick wood? IOW, do
> I have to watch out for rough lumber that is soo rough that even the best
> finishing skills will leave me <3/4"? TIA -- Igor

JC

John Carlson

in reply to igor on 30/07/2004 2:50 PM

01/08/2004 1:31 PM

On Fri, 30 Jul 2004 14:50:57 GMT, igor <[email protected]> wrote:

>
>If I start with 1" rough, resaw once with a BS, run through jointer and
>planer, what thickness am I likely to net?

If you resaw down the center, probably the two pieces will be about
3/8". Maybe a little more or a little less.

>I assume there are many
>variables here regarding skill/technique.
Yes, it also depends on just how thick the original piece was, how
straight it was, and how rough it was

>is it harder to resaw down the middle if the stock is 2" wide versus 6"?
Yes, a wider board is somewhat harder to resaw than a narrow one,
because the blade has more depth over which to wander off course.
That doesn't mean you'll get poorer results, only that you have to be
more careful in setting up the saw, using a good sharp blade, and
guiding it carefully.
>
>might
>resawing with the TS still net more because the cut will stay parallel to
>the sides

If the piece is narrow enough to resaw in one pass (probably about
3-1/2" for a 10" blade) then the TS will probably give you a cleaner
cut. If the board is wide, so you have to flip it over and cut from
both edges, it's very hard to get the two cuts to align perfectly and
you'll have a pretty rough board that needs a few trips through the
jointer and planer to clean up.

And then there's the question of whether the TS really has the power
to do this. IME it pushes a typical contractor's saw pretty hard.

Having done it both ways, I much prefer the BS.

>
>One other thing re rough lumber - which I have never bought - if I use the
>right way to finish it will I always end up with 3/4" thick wood? IOW, do
>I have to watch out for rough lumber that is soo rough that even the best
>finishing skills will leave me <3/4"?

Yes, that's possible. But IME a reasonably straight board will easily
finish to well over 3/4". 13/16, maybe even 7/8. So you have some
leeway.

-- jc
Published e-mail address is strictly for spam collection.
If e-mailing me, please use jc631 at optonline dot net

pp

patriarch <[email protected]>

in reply to igor on 30/07/2004 2:50 PM

30/07/2004 4:51 PM

"George" <george@least> wrote in news:[email protected]:

> It's even more complicated than that. 4/4 softwoods are 3/4 planed,
> hardwoods 13/16, yet both are an inch to an inch and an eighth thick
> from the saw. If they sand the boards like they do at the borg, may
> get less.
>
> At my house, with a Delta 14" bandsaw, a 4/4 rough board will normally
> yield a 1/2 and a 1/4 board with a Timberwolf blade. To get two 1/2"
> boards, I have to go to a 5/4 board.
>
> Now, depending on your planer, your hand, and your sawyer, you might
> do better, but I find that half inch for small projects and 1/4 for
> framed panels and bottoms/backs, is a pretty good way to cut.
>
>
> "igor" <[email protected]> wrote in message
> news:[email protected]...
>> As I carefully consider - with substantial help from posts I have
>> read here, TY - whether to buy finished lumber or "make" my own, I am
>> thinking about what thickness I will end up with.
>>
>> If I start with 1" rough, resaw once with a BS, run through jointer
>> and planer, what thickness am I likely to net? I assume there are
>> many variables here regarding skill/technique. And, for example,
>> with the BS, is it harder to resaw down the middle if the stock is 2"
>> wide versus 6"?
>>
>> Also, while even a thin kerf TS blade takes more than a BS blade,
>> might resawing with the TS still net more because the cut will stay
>> parallel to the sides (and I have no experience resawing, or really
>> much of any exp.
> w/
>> a BS)?
>>
>> And, is the answer likely to vary depending on wood species - maybe
> because
>> it is harder to resaw well with harder woods?
>>
>> One other thing re rough lumber - which I have never bought - if I
>> use the right way to finish it will I always end up with 3/4" thick
>> wood? IOW, do I have to watch out for rough lumber that is soo rough
>> that even the best finishing skills will leave me <3/4"? TIA -- Igor
>
>
>

The size of the piece you want when you're finished will factor in. Large
or wide pieces will be more difficult to resaw easily.

Hard woods, or woods with strong grain, also are more difficult to resaw
easily.

I've done the resaw on the table saw thing. Under duress. There are a lot
of ways to get this wrong, which increases the pucker factor. I'd look for
other options, before I planned on this as a means of regularly making
thinner stock from thicker pieces. Many other options.

Proceed with care. Try a small amount of rough stock, before you fill your
truck with enough for the next three years work. There's a reason for that
big industrial gear...

Patriarch

gG

in reply to igor on 30/07/2004 2:50 PM

30/07/2004 3:21 PM

igor <[email protected]> wrote in message news:<[email protected]>...
> As I carefully consider - with substantial help from posts I have read
> here, TY - whether to buy finished lumber or "make" my own, I am thinking
> about what thickness I will end up with.
>
> If I start with 1" rough, resaw once with a BS, run through jointer and
> planer, what thickness am I likely to net? I assume there are many
> variables here regarding skill/technique. And, for example, with the BS,
> is it harder to resaw down the middle if the stock is 2" wide versus 6"?
>
> Also, while even a thin kerf TS blade takes more than a BS blade, might
> resawing with the TS still net more because the cut will stay parallel to
> the sides (and I have no experience resawing, or really much of any exp. w/
> a BS)?
>
> And, is the answer likely to vary depending on wood species - maybe because
> it is harder to resaw well with harder woods?
>
> One other thing re rough lumber - which I have never bought - if I use the
> right way to finish it will I always end up with 3/4" thick wood? IOW, do
> I have to watch out for rough lumber that is soo rough that even the best
> finishing skills will leave me <3/4"? TIA -- Igor

You CAN re-saw with a TS, but it's not only inefficient in most
circumstances, but difficult in others. Just yesterday, I was ripping
a piece of 7/4 mahogany, s2s, and one particular piece was so
"reactive" it stalled my saw, in spite of having a splitter installed.
Just clamped right up on the blade. I had to finish the cut on the
bandsaw! Well, my delta 14 bs cut the same wood more than twice as
fast, even with a 1/4 inch blade. As you could surmise, I'm usually
too lazy to change blades unless I have to, a 1/2 or 3/4 blade would
be better, and I do resaw on the ts when the waste isn't critical. A
plus is, I get a glueable surface without furthur processing. You will
need a jointer and planer, of course, if you do a lot of rough lumber.


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