I quite new to wood work measurements and I need figure out to figure
out the cubic capasity of a box with the dimensions - 23cm width, 40cm
height, 23 cm depth with the wood 1.8cm thick. Feet and meters would
be handy. I would be very grateful of any answers.

wrote in message news:cf4ff1bb-fb67-4886-a943-...
I quite new to wood work measurements and I need figure out to figure
out the cubic capasity of a box with the dimensions - 23cm width, 40cm
height, 23 cm depth with the wood 1.8cm thick. Feet and meters would
be handy. I would be very grateful of any answers.

13669.5 cubic cm/836 cubic inches/.01 cubic meters/.35 cubic feet ... mas or
menos.

Standby: I'm sure someone will just love to prove that wrong (which may be
quite easy to do), and let us both know in no uncertain terms.


--
www.e-woodshop.net
Last update: 12/09/07
KarlC@ (the obvious)

Ok. Here's my answer:

Assuming that you gave the outside dimensions for a fully enclosed six
sided box:

23cm x 23cm x 40cm = 21160 cubic cm (volume of the box including the
sides and ends)

Subtract the volume of the 1.8cm wood:
1.8cm x 23cm x 40cm x 4(sides) = 6624 cubic cm (volume taken up by the
four sides)
1.8cm x 21.2cm x 21.2cm x 2(ends minus the thickness of the sides) =
1617.984 cubic cm (volume taken up by the two ends)

8241.84 cubic cm in wood.

21160 - 8241.84 = (internal volume) 12918.016 cubic cm or 788.31 cubic in

wrote:
I quite new to wood work measurements and I need figure out to figure
out the cubic capasity of a box with the dimensions - 23cm width, 40cm
height, 23 cm depth with the wood 1.8cm thick. Feet and meters would
be handy. I would be very grateful of any answers.

--
"Hey, yutz! Guns aren't toys.
They're for family protection, hunting dangerous or delicious animals,
and keeping the King of England out of your face."
-- Krusty the Clown

On Dec 11, 10:45 am, wrote:
I quite new to wood work measurements and I need figure out to figure
out the cubic capasity of a box with the dimensions - 23cm width, 40cm
height, 23 cm depth with the wood 1.8cm thick. Feet and meters would
be handy. I would be very grateful of any answers.

Are those inside dims?

Do you plan to make the box and then put in a woofer of unknown specs?

The woofer's specs will tell you how big the box needs to be.
You can't work backwards from a box dimension unless you plan to vent
it.
There are all kinds of nomograms around to determine the volume of a
box.
You should be able to find a copy of Martin Colloms's work in your
library.
Anything by Alexis Badmaieff or Don Davis will help you along too.

r

"Robatoy" wrote in message

On Dec 11, 10:45 am, wrote:
I quite new to wood work measurements and I need figure out to figure
out the cubic capasity of a box with the dimensions - 23cm width, 40cm
height, 23 cm depth with the wood 1.8cm thick. Feet and meters would
be handy. I would be very grateful of any answers.

Are those inside dims?

I _ASSume_, that "a box with the dimensions..." would be outside
measurements, particularly since he specifically gave the thickness (1.8cm)
of the wood.

(interior W)(interior H)(interior D) = interior volume

(23 - 3.6)(40 - 3.6)(23 - 3.6) =
(19.4)(36.4)(19.4) = 13,669.504 cubic centimeters

Any errors from there are conversion error by using something besides "cubic
centimeters" to convert to the next "cubic whatever".

.... it's the way I did it, but what the hell do I know?

OK ... not much, obviously!

--
www.e-woodshop.net
Last update: 12/09/07
KarlC@ (the obvious)

"Swingman" wrote in message
...

"Robatoy" wrote in message

On Dec 11, 10:45 am, wrote:
I quite new to wood work measurements and I need figure out to figure
out the cubic capasity of a box with the dimensions - 23cm width, 40cm
height, 23 cm depth with the wood 1.8cm thick. Feet and meters would
be handy. I would be very grateful of any answers.

Are those inside dims?

I _ASSume_, that "a box with the dimensions..." would be outside
measurements, particularly since he specifically gave the thickness
(1.8cm)
of the wood.

(interior W)(interior H)(interior D) = interior volume

(23 - 3.6)(40 - 3.6)(23 - 3.6) =
(19.4)(36.4)(19.4) = 13,669.504 cubic centimeters

Any errors from there are conversion error by using something besides
"cubic
centimeters" to convert to the next "cubic whatever".

... it's the way I did it, but what the hell do I know?

OK ... not much, obviously!

.... oh yeah!

Forgot ... we will now get into how the box is constructed; butt joints,
miter joints, rabbet joints ... all of which could have some effect on the
final answer.

.... maybe.

--
www.e-woodshop.net
Last update: 12/09/07
KarlC@ (the obvious)

Swingman wrote:
"Robatoy" wrote in message

On Dec 11, 10:45 am, wrote:
I quite new to wood work measurements and I need figure out to figure
out the cubic capasity of a box with the dimensions - 23cm width, 40cm
height, 23 cm depth with the wood 1.8cm thick. Feet and meters would
be handy. I would be very grateful of any answers.
Are those inside dims?

I _ASSume_, that "a box with the dimensions..." would be outside
measurements, particularly since he specifically gave the thickness (1.8cm)
of the wood.

(interior W)(interior H)(interior D) = interior volume

(23 - 3.6)(40 - 3.6)(23 - 3.6) =
(19.4)(36.4)(19.4) = 13,669.504 cubic centimeters

Any errors from there are conversion error by using something besides "cubic
centimeters" to convert to the next "cubic whatever".

.... it's the way I did it, but what the hell do I know?

OK ... not much, obviously!

I get the same answer doing it that way. I'm still trying to figure out
why the
difference in my previous post. If I did it right, it should come out
the same.

--
"Hey, yutz! Guns aren't toys.
They're for family protection, hunting dangerous or delicious animals,
and keeping the King of England out of your face."
-- Krusty the Clown

DS wrote:
Swingman wrote:
"Robatoy" wrote in message

On Dec 11, 10:45 am, wrote:
I quite new to wood work measurements and I need figure out to figure
out the cubic capasity of a box with the dimensions - 23cm width, 40cm
height, 23 cm depth with the wood 1.8cm thick. Feet and meters would
be handy. I would be very grateful of any answers.
Are those inside dims?

I _ASSume_, that "a box with the dimensions..." would be outside
measurements, particularly since he specifically gave the thickness
(1.8cm)
of the wood.

(interior W)(interior H)(interior D) = interior volume

(23 - 3.6)(40 - 3.6)(23 - 3.6) =
(19.4)(36.4)(19.4) = 13,669.504 cubic centimeters

Any errors from there are conversion error by using something besides
"cubic
centimeters" to convert to the next "cubic whatever".

.... it's the way I did it, but what the hell do I know?

OK ... not much, obviously!

I get the same answer doing it that way. I'm still trying to figure out
why the
difference in my previous post. If I did it right, it should come out
the same.
Spoke too soon... I only subtracted 1.8cm for thickness of the top and
bottom in my first attempt. Should have been 3.6cm for both sides.


--
"Hey, yutz! Guns aren't toys.
They're for family protection, hunting dangerous or delicious animals,
and keeping the King of England out of your face."
-- Krusty the Clown

DS wrote:
Swingman wrote:
"Robatoy" wrote in message

On Dec 11, 10:45 am, wrote:
I quite new to wood work measurements and I need figure out to figure
out the cubic capasity of a box with the dimensions - 23cm width, 40cm
height, 23 cm depth with the wood 1.8cm thick. Feet and meters would
be handy. I would be very grateful of any answers.
Are those inside dims?

I _ASSume_, that "a box with the dimensions..." would be outside
measurements, particularly since he specifically gave the thickness
(1.8cm)
of the wood.

(interior W)(interior H)(interior D) = interior volume

(23 - 3.6)(40 - 3.6)(23 - 3.6) =
(19.4)(36.4)(19.4) = 13,669.504 cubic centimeters

Any errors from there are conversion error by using something besides
"cubic
centimeters" to convert to the next "cubic whatever".

.... it's the way I did it, but what the hell do I know?

OK ... not much, obviously!

I get the same answer doing it that way. I'm still trying to figure out
why the
difference in my previous post. If I did it right, it should come out
the same.

You are counting all the edges twice, and the space in the corners three
times.

--
Froz...

Lits Slut#9

FrozenNorth wrote:
DS wrote:
Swingman wrote:
"Robatoy" wrote in message

On Dec 11, 10:45 am, wrote:
I quite new to wood work measurements and I need figure out to figure
out the cubic capasity of a box with the dimensions - 23cm width, 40cm
height, 23 cm depth with the wood 1.8cm thick. Feet and meters would
be handy. I would be very grateful of any answers.
Are those inside dims?

I _ASSume_, that "a box with the dimensions..." would be outside
measurements, particularly since he specifically gave the thickness
(1.8cm)
of the wood.

(interior W)(interior H)(interior D) = interior volume

(23 - 3.6)(40 - 3.6)(23 - 3.6) =
(19.4)(36.4)(19.4) = 13,669.504 cubic centimeters

Any errors from there are conversion error by using something besides
"cubic
centimeters" to convert to the next "cubic whatever".

.... it's the way I did it, but what the hell do I know?

OK ... not much, obviously!

I get the same answer doing it that way. I'm still trying to figure
out why the
difference in my previous post. If I did it right, it should come out
the same.

You are counting all the edges twice, and the space in the corners three
times.

I really shouldn't do math right after hitting the crack pipe and before
coffee...

--
"Hey, yutz! Guns aren't toys.
They're for family protection, hunting dangerous or delicious animals,
and keeping the King of England out of your face."
-- Krusty the Clown

On Dec 11, 1:42 pm, DS wrote:
FrozenNorth wrote:
DS wrote:
Swingman wrote:
"Robatoy" wrote in message

On Dec 11, 10:45 am, wrote:
I quite new to wood work measurements and I need figure out to figure
out the cubic capasity of a box with the dimensions - 23cm width, 40cm
height, 23 cm depth with the wood 1.8cm thick. Feet and meters would
be handy. I would be very grateful of any answers.
Are those inside dims?

I _ASSume_, that "a box with the dimensions..." would be outside
measurements, particularly since he specifically gave the thickness
(1.8cm)
of the wood.

(interior W)(interior H)(interior D) = interior volume

(23 - 3.6)(40 - 3.6)(23 - 3.6) =
(19.4)(36.4)(19.4) = 13,669.504 cubic centimeters

Any errors from there are conversion error by using something besides
"cubic
centimeters" to convert to the next "cubic whatever".

.... it's the way I did it, but what the hell do I know?

OK ... not much, obviously!

I get the same answer doing it that way. I'm still trying to figure
out why the
difference in my previous post. If I did it right, it should come out
the same.

You are counting all the edges twice, and the space in the corners three
times.

I really shouldn't do math right after hitting the crack pipe and before
coffee...

--
"Hey, yutz! Guns aren't toys.
They're for family protection, hunting dangerous or delicious animals,
and keeping the King of England out of your face."
-- Krusty the Clown

I do my best math right after a boilermaker's breakfast.

On Dec 11, 12:51 pm, "Swingman" wrote:
"Swingman" wrote in message

...





"Robatoy" wrote in message

On Dec 11, 10:45 am, wrote:
I quite new to wood work measurements and I need figure out to figure
out the cubic capasity of a box with the dimensions - 23cm width, 40cm
height, 23 cm depth with the wood 1.8cm thick. Feet and meters would
be handy. I would be very grateful of any answers.

Are those inside dims?

I _ASSume_, that "a box with the dimensions..." would be outside
measurements, particularly since he specifically gave the thickness
(1.8cm)
of the wood.

(interior W)(interior H)(interior D) = interior volume

(23 - 3.6)(40 - 3.6)(23 - 3.6) =
(19.4)(36.4)(19.4) = 13,669.504 cubic centimeters

Any errors from there are conversion error by using something besides
"cubic
centimeters" to convert to the next "cubic whatever".

... it's the way I did it, but what the hell do I know?

OK ... not much, obviously!

... oh yeah!

Forgot ... we will now get into how the box is constructed; butt joints,
miter joints, rabbet joints ... all of which could have some effect on the
final answer.

... maybe.

Well, ****..isn't that obvious?? A lock-mitre bit of course...but
which brand? Huh? Huh?

I may have jumped the gun a little on the question of inside/outside
dims.
From my perspective only the inside dims matter IOW. how much air is
there in that box?
Then the next question appears. The ratio/shapes of panels as to
reduce standing waves at certain frequencies...but I could be talking
**** here..

r

On Tue, 11 Dec 2007 12:08:06 -0800 (PST), Robatoy
wrote:

I do my best math right after a boilermaker's breakfast.


On a side note...

Speakers that don't need to be portable are excellent uses for MDF.

"Bonehenge (B A R R Y)" wrote in message
news
On Tue, 11 Dec 2007 12:08:06 -0800 (PST), Robatoy
wrote:

I do my best math right after a boilermaker's breakfast.


On a side note...

Speakers that don't need to be portable are excellent uses for MDF.

Correction - litter boxes are excellent uses for MDF...

--

-Mike-

Wrong....MDF will fall apart when it gets wet....

Mike Marlow wrote:


Correction - litter boxes are excellent uses for MDF...

"mapdude" wrote in message
. ..

Mike Marlow wrote:


Correction - litter boxes are excellent uses for MDF...

Wrong....MDF will fall apart when it gets wet....

Which makes it perfect for a litter box. Sure isn't good for anything else.

--

-Mike-

Mike Marlow wrote:
"mapdude" wrote in message
. ..
Mike Marlow wrote:

Correction - litter boxes are excellent uses for MDF...

Wrong....MDF will fall apart when it gets wet....

Which makes it perfect for a litter box. Sure isn't good for anything else.

It's a good stable substrate for veneer - assuming what you're making is
for indoor dry use.

Doug Winterburn wrote:


It's a good stable substrate for veneer - assuming what you're making is
for indoor dry use.


As a smooth, high-density material, it's also good for speakers that
don't need to be moved around much. Maybe even under veneer. G

MDF is also fantastic for patterns, jigs, and mock-ups.

"Doug Winterburn" wrote

It's a good stable substrate for veneer - assuming what you're making is
for indoor dry use.

Jigs!

There is no better material for those down and dirty, use once or twice,
throw away jigs ... I don't know what I'd do without the stuff as almost
everything I do requires a jig or two at some point.

Damn mdf is getting expensive lately at the BORGS, though.

Paid $9 + with tax yesterday for a 2 x 4 sheet of 1/2" mdf ... used to be
around $6.


--
www.e-woodshop.net
Last update: 12/12/07
KarlC@ (the obvious)

On Dec 11, 10:45 am, wrote:
I quite new to wood work measurements and I need figure out to figure
out the cubic capasity of a box with the dimensions - 23cm width, 40cm
height, 23 cm depth with the wood 1.8cm thick. Feet and meters would
be handy. I would be very grateful of any answers.

What kind of joint?

If it's a miter, the inside dimensions would be:

23- (2*1.8)=width
40- (2*1.8)=height
23- (2*1.8)=depth

volume= w*h*d

On Dec 14, 6:53 am, "Swingman" wrote:
"Doug Winterburn" wrote

It's a good stable substrate for veneer - assuming what you're making is
for indoor dry use.

Jigs!

There is no better material for those down and dirty, use once or twice,
throw away jigs ... I don't know what I'd do without the stuff as almost
everything I do requires a jig or two at some point.

Damn mdf is getting expensive lately at the BORGS, though.

Paid $9 + with tax yesterday for a 2 x 4 sheet of 1/2" mdf ... used to be
around $6.

--www.e-woodshop.net
Last update: 12/12/07
KarlC@ (the obvious)

$14 for 4'x4' here. $21.00 for a 97x49 from the wholesaler plus
deliveries.
I just got notice of a 20% hike in one of the solid surface
manufactures supply... the China brand.
It comes in via the US.
They blame the dollar (US) and rising transportation costs.
I did see that one coming.....from a mile...through thick fog...at
night...from the other side of a mountain...
The bankers don't give a rat's ass where they make up their losses.

*setting match to soap box*