On Dec 11, 10:45 am, [email protected] 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
DS wrote:
> Swingman wrote:
>> "Robatoy" wrote in message
>>
>>> On Dec 11, 10:45 am, [email protected] 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
On Dec 11, 12:51 pm, "Swingman" <[email protected]> wrote:
> "Swingman" <[email protected]> wrote in message
>
> news:[email protected]...
>
>
>
>
>
> > "Robatoy" wrote in message
>
> > > On Dec 11, 10:45 am, [email protected] 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, shit..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
shit here..
r
On Dec 14, 6:53 am, "Swingman" <[email protected]> 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*
"Swingman" <[email protected]> wrote in message
news:[email protected]...
>
> "Robatoy" wrote in message
>
> > On Dec 11, 10:45 am, [email protected] 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)
Mike Marlow wrote:
> "mapdude" <[email protected]> wrote in message
> news:[email protected]...
>> 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.
"Bonehenge (B A R R Y)" <[email protected]> wrote in message
news:[email protected]...
> On Tue, 11 Dec 2007 12:08:06 -0800 (PST), Robatoy
> <[email protected]> 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-
[email protected]
DS wrote:
> Swingman wrote:
>> "Robatoy" wrote in message
>>
>>> On Dec 11, 10:45 am, [email protected] 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
On Dec 11, 1:42 pm, DS <[email protected]> wrote:
> FrozenNorth wrote:
> > DS wrote:
> >> Swingman wrote:
> >>> "Robatoy" wrote in message
>
> >>>> On Dec 11, 10:45 am, [email protected] 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.
<[email protected]> 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)
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.
FrozenNorth wrote:
> DS wrote:
>> Swingman wrote:
>>> "Robatoy" wrote in message
>>>
>>>> On Dec 11, 10:45 am, [email protected] 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
"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, [email protected] 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
"mapdude" <[email protected]> wrote in message
news:[email protected]...
>
> 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-
[email protected]
"Robatoy" wrote in message
> On Dec 11, 10:45 am, [email protected] 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:
> "Robatoy" wrote in message
>
>> On Dec 11, 10:45 am, [email protected] 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
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
[email protected] 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 Tue, 11 Dec 2007 12:08:06 -0800 (PST), Robatoy
<[email protected]> 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.