Also, for those who don't like to follow the calc of 144 cubic inches which
comes up here among the innocent, you multiply the surface area in sq ft
times the fraction to get the BF. Mostly those over 35 can do this in their
head, those under will require mechanical or electronic aid....
"Frank Ketchum" <[email protected]> wrote in message
news:[email protected]...
>
> "Oregon" <[email protected]> wrote in message
> news:[email protected]...
> > New to the sport...lots to learn. I understand the simple concept of a
> > "board foot". I often see wood described as what appears to be a ratio
> > (e.g. 7/4 cherry). Is this thickness expressed in 1/4 inch increments?
> > Please explain.
>
> And FYI, 4/4, 8/4 would be pronounced "four quarter, eight quarter" etc.
>
Nothing really to explain you are correct..
5/4 is the size of the stock (nominal 1 1/4" thick) before it is surfaced
two sides (S2S). to it's actual size.
Your choice is to pay more for S2S where the mill or supplier does surfacing
for you or you pay less for the rough cut wood and do the job yourself.
Third choice is to pay almost twice the price of rough cut stock for ready
to go, sold by the linier foot stuff at a store like Lowes or Home Depot.
Surfacing two sides doesn't and usually isn't the same thing sanded and
ready to have a finish applied. You will almost certainly still have to do a
fair amount of work to get the stock to that point.
The cost of rolling your own from rough cut stock can be hefty in either
price, power tools, jointer and surface planer, to do the job efficiently,
time/work with hand tools, a good hand plane that you know how to use and
take care of, or a combination of both, most start out with the off the
shelf and ready to go stock.
--
Mike G.
[email protected]
Heirloom Woods
www.heirloom-woods.net
"Oregon" <[email protected]> wrote in message
news:[email protected]...
> New to the sport...lots to learn. I understand the simple concept of a
> "board foot". I often see wood described as what appears to be a ratio
> (e.g. 7/4 cherry). Is this thickness expressed in 1/4 inch increments?
> Please explain.
> Cheers,
> O.
>
>
"Oregon" <[email protected]> wrote in message
news:[email protected]...
> New to the sport...lots to learn. I understand the simple concept of a
> "board foot". I often see wood described as what appears to be a ratio
> (e.g. 7/4 cherry). Is this thickness expressed in 1/4 inch increments?
> Please explain.
> Cheers,
> O.
Yes a 1" thick board is 4/4, an inch and a half is 6/4, etc. However, just
like a 2 x 4 is not really 2 x 4, a board food of finished lumber is not
always 4/4 thick. It may start out as a full inch, but may have shrunk a
bit as it dried and then will be planed down to about 3/4, but you still pay
for the full inch.
Ed
[email protected]
http://pages.cthome.net/edhome
Greetings,
I will guess as to the reason why, which means I do not have
the exactly correct answer.
At the saw mill, the sawyer adjusts the thickness
by moving the say so many 1/4 inches from its current setting.
The scale does not have any numbers, just marks every 1/4 inch.
No numbers makes sense. The saw could sit at any
position depending on the thickness of the last board. The next
thickness would then depend on the movement of the saw. I expect
the scale or something about the saws position automatically takes
care of the kerf.
Some how this counting of 1/4 inches worked its way from where
the sawyer sets the saw, to those who requested boards of
different thicknesses and then to us.
Sincerely,
Bill Thomas
Oregon wrote:
> New to the sport...lots to learn. I understand the simple concept of a
> "board foot". I often see wood described as what appears to be a ratio
> (e.g. 7/4 cherry). Is this thickness expressed in 1/4 inch increments?
> Please explain.
> Cheers,
> O.
>
>
"Oregon" <[email protected]> wrote in message
news:[email protected]...
> New to the sport...lots to learn. I understand the simple concept of a
> "board foot". I often see wood described as what appears to be a ratio
> (e.g. 7/4 cherry). Is this thickness expressed in 1/4 inch increments?
> Please explain.
And FYI, 4/4, 8/4 would be pronounced "four quarter, eight quarter" etc.
Frank