Ok, I have a workbench plan in metric. I've gone thru all of the
metric
to inch conversions and wanted to ask those who have done this
what happens here.
For instance, one my measurement is for 90 x 45 x 700 which
converts to (roughly) 3.54 x 1.7 x 27.5 = I have a feeling that
this is close enough to standard 2 x 4 = 3.5 x 1.5 - the 27.5, is
really depended upon how long I need this piece and might
be subject to other components.
However, I've got one at this: 70 x 70 x 810 which equals =
2.75 x 2.75 x 31.8.
Should I make this 2.5 or 2 3/4 or 3 inches? Again, I recognize
that it could change depending upon the other pieces, but for the
purpose of buying lumber, do I just get something I can plane
down to below 3 or AT 3 inches?
Experiences shared appreciated.
MJM
Tim W wrote:
> <[email protected]> wrote in message
> news:e8dcd6e2-8549-4763-bea4-ccd4327d8988@k37g2000hsf.googlegroups.com...
>> Ok, I have a workbench plan in metric. I've gone thru all of the
>> metric
>> to inch conversions and wanted to ask those who have done this
>> what happens here.
>>
>> For instance, one my measurement is for 90 x 45 x 700 which
>> converts to (roughly) 3.54 x 1.7 x 27.5 = I have a feeling that
>> this is close enough to standard 2 x 4 = 3.5 x 1.5 - the 27.5, is
>> really depended upon how long I need this piece and might
>> be subject to other components.
>>
>> However, I've got one at this: 70 x 70 x 810 which equals =
>> 2.75 x 2.75 x 31.8.
>>
>> Should I make this 2.5 or 2 3/4 or 3 inches? Again, I recognize
>> that it could change depending upon the other pieces, but for the
>> purpose of buying lumber, do I just get something I can plane
>> down to below 3 or AT 3 inches?
>>
>> Experiences shared appreciated.
>>
>
> A large part of the world has gone metric in the last 50yrs but it hasn't
> been a simple process. The international timber trade for instance remains
> Imperial and so even in Europe we are often working in metricised imperial.
> This means for instance that we buy sheet materials in a standard size of
> 1220 x 2440mm which turns out to be an 8' x 4' sheet. The thickness of the
> sheet however is metric, precisely sanded to 6, 12, 18, or 25mm -
> increments of six millimeters, except they aren't because they are metric
> equivalents of 1/4, 1/2, 3/4, ad 1". And that doesn't apply to certain thin
> materials which are sold as say 3.2mm thick but which are actually 1/8".
> Confused? You will be.
>
And often when you buy 1/2" plywood you'll actually get 15/23"' buy 3/4"
and you might get 11/16", etc. etc.
---- Posted via Pronews.com - Premium Corporate Usenet News Provider ----
http://www.pronews.com offers corporate packages that have access to 100,000+ newsgroups
You are not the first to have run into this problem. Just seeing a few
examples or understanding the basic concepts may go a long way in helping
you to figure this out.
Using GD&T is helpful to show something which may have infinite variations,
pertaining to whether it may or may not be important to be shown on paper to
position or scale, and how to understand the relationship between starting
points or references, features, characteristics(s) being implied etc.. The
real definition is better than mine. This is ways to illustrate or
present the info, not the info's standard format itself.
Google
ASME Y14.5M-1994 Geometric Dimensioning and Tolerancing (GD&T)
like
http://www.etinews.com/gdt_glossary.html
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On Jul 6, 9:32=A0pm, Just Wondering <[email protected]> wrote:
> Tim W wrote:
> > <[email protected]> wrote in message
> >news:e8dcd6e2-8549-4763-bea4-ccd4327d8988@k37g2000hsf.googlegroups.com..=
.
> >> Ok, I have a workbench plan in metric. I've gone thru all of the
> >> metric
> >> to inch conversions and wanted to ask those who have done this
> >> what happens here.
>
> >> For instance, one my measurement is for 90 x 45 x 700 which
> >> converts to (roughly) 3.54 x 1.7 x 27.5 =A0=3D I have a feeling that
> >> this is close enough to standard 2 x 4 =3D 3.5 x 1.5 - the 27.5, is
> >> really depended upon how long I need this piece and might
> >> be subject to other components.
>
> >> However, I've got one at this: 70 x 70 x 810 which equals =3D
> >> 2.75 x 2.75 x 31.8.
>
> >> Should I make this 2.5 or 2 3/4 or 3 inches? Again, I recognize
> >> that it could change depending upon the other pieces, but for the
> >> purpose of buying lumber, do I just get something I can plane
> >> down to below 3 or AT 3 inches?
>
> >> Experiences shared appreciated.
>
> > A large part of the world has gone metric in the last 50yrs but it hasn=
't
> > been a simple process. The international timber trade for instance rema=
ins
> > Imperial and so even in Europe we are often working in metricised imper=
ial.
> > This means for instance that we buy sheet materials in a standard size =
of
> > 1220 x 2440mm which turns out to be an 8' x 4' sheet. The thickness of =
the
> > sheet however is metric, precisely sanded to =A06, 12, 18, or 25mm -
> > increments of six millimeters, except they aren't because they are metr=
ic
> > equivalents of 1/4, 1/2, 3/4, ad 1". And that doesn't apply to certain =
thin
> > materials which are sold as say 3.2mm thick but which are actually 1/8"=
.
> > Confused? You will be.
>
> And often when you buy 1/2" plywood you'll actually get 15/23"' buy 3/4"
> and you might get 11/16", etc. etc.
> =A0 =A0 =A0 =A0---- Posted via Pronews.com - Premium Corporate Usenet New=
s Provider ----http://www.pronews.comoffers corporate packages that have ac=
cess to 100,000+ newsgroups
Stuff that comes in 23rds is a bear to work with.
=2E
=2E
=2E
=2E
=2E
=2E
=2E
=2E
=2E
=2E
=2E
=2E
=2E
=2E
=2E
=2E
=2E
=2E
=2E
=2E
=2E
=2E
=2E
=2E
=2E
=2E
=2E
=2E
=2E
=2E
=2E
=2E
=2E
=2E
=2E
=2E
=2E
I know. my bad... just a typo..
Spruce ply and other sheeting types plywood's and other rough construction
sticks (2x4s etc) are imperial thicknesses, Fir ply and hardwood veneer ply
is in metric thicknesses.
Only 3 countries left in the world still on the imperial system, Libya,
Burma, USA. Come on! Get with the program. Why convert? Buy a metric tape
and a couple of steel rules.
"Robatoy" <[email protected]> wrote in message
news:18fe76cd-c45d-4896-9b9d-40d088ce4174@z66g2000hsc.googlegroups.com...
On Jul 6, 9:32 pm, Just Wondering <[email protected]> wrote:
> Tim W wrote:
> > <[email protected]> wrote in message
> >news:e8dcd6e2-8549-4763-bea4-ccd4327d8988@k37g2000hsf.googlegroups.com...
> >> Ok, I have a workbench plan in metric. I've gone thru all of the
> >> metric
> >> to inch conversions and wanted to ask those who have done this
> >> what happens here.
>
> >> For instance, one my measurement is for 90 x 45 x 700 which
> >> converts to (roughly) 3.54 x 1.7 x 27.5 = I have a feeling that
> >> this is close enough to standard 2 x 4 = 3.5 x 1.5 - the 27.5, is
> >> really depended upon how long I need this piece and might
> >> be subject to other components.
>
> >> However, I've got one at this: 70 x 70 x 810 which equals =
> >> 2.75 x 2.75 x 31.8.
>
> >> Should I make this 2.5 or 2 3/4 or 3 inches? Again, I recognize
> >> that it could change depending upon the other pieces, but for the
> >> purpose of buying lumber, do I just get something I can plane
> >> down to below 3 or AT 3 inches?
>
> >> Experiences shared appreciated.
>
> > A large part of the world has gone metric in the last 50yrs but it
> > hasn't
> > been a simple process. The international timber trade for instance
> > remains
> > Imperial and so even in Europe we are often working in metricised
> > imperial.
> > This means for instance that we buy sheet materials in a standard size
> > of
> > 1220 x 2440mm which turns out to be an 8' x 4' sheet. The thickness of
> > the
> > sheet however is metric, precisely sanded to 6, 12, 18, or 25mm -
> > increments of six millimeters, except they aren't because they are
> > metric
> > equivalents of 1/4, 1/2, 3/4, ad 1". And that doesn't apply to certain
> > thin
> > materials which are sold as say 3.2mm thick but which are actually 1/8".
> > Confused? You will be.
>
> And often when you buy 1/2" plywood you'll actually get 15/23"' buy 3/4"
> and you might get 11/16", etc. etc.
> ---- Posted via Pronews.com - Premium Corporate Usenet News
> Provider ----http://www.pronews.comoffers corporate packages that have
> access to 100,000+ newsgroups
Stuff that comes in 23rds is a bear to work with.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
I know. my bad... just a typo..
On Jul 5, 2:54=A0pm, [email protected] wrote:
> Ok, I have a workbench plan in metric. I've gone thru all of the
> metric
> to inch conversions and wanted to ask those who have done this
> what happens here.
This conversation has been quite interesting. However,
one answer remains. Is there a "nominal" metric measurement
like our 2x4 which isn't 2" by 4"?
So when I look at a plan, can I trust that the measurement
which reads 70 mm is actually 70 mm, not 68mm?
Thanks
MJM
Ricodjour,
> Is this a dressy bench or a work bench? =A0If it's a dressy bench and
> you want to show off the wood, then you =A0should buy thicker stock,
> joint it and plane it to thickness. =A0If it's work bench you could
> built it up from dressed stock and make minor adjustments so you
> wouldn't have to do the milling operations 2 @ 5/4 stock + 1 @ 1x
> stock puts your right around the 2.75. =A0Making it from built up stock
> also provides "instant" tenons and mortises by having the middle piece
> project to form a tenon or having a void to form a mortise.
>
> R
This sounds right. I'll wait until I get more "chime ins".
Thanks for the response.
MJM
On Jul 6, 8:08 am, "Tim W" <[email protected]> wrote:
>
>...
>
> If you go for a beer in a bar in France you always ask for a 'demi' which
> means a 'half' and the barman gives you 250cl, a quarter litre.Why? Because
> it is a metric half pint, despite the metric system being standard for
> 200yrs in France beer is still drunk in pints which aren't Imperial Pints
> but metric equivalents, and not for that matter anything to do with American
> pints which are something else again.
>
> ...
And a pint's a pound the world around...
Another reason customary units (some Imperial,
some SI, some American, some others) is that
they were determined by custom to be convenient
for particular applications. Stress analysis is simpler
with force-based units as you don't have to divide or
multiply by the acceleration due to gravity. Pascals
are way too small to be practical, for most uses,
it takes several hundred thousand of them just to
blow up a party balloon. If you have to stick a 'k'
'M' or 'm' in front of the unit most of time you use
it, it's the wrong size to begin with.
--
FF
On Jul 5, 8:56=A0pm, "[email protected]" <[email protected]>
wrote:
> Ricodjour,
>
> > Is this a dressy bench or a work bench? =A0If it's a dressy bench and
> > you want to show off the wood, then you =A0should buy thicker stock,
> > joint it and plane it to thickness. =A0If it's work bench you could
> > built it up from dressed stock and make minor adjustments so you
> > wouldn't have to do the milling operations 2 @ 5/4 stock + 1 @ 1x
> > stock puts your right around the 2.75. =A0Making it from built up stock
> > also provides "instant" tenons and mortises by having the middle piece
> > project to form a tenon or having a void to form a mortise.
>
> > R
>
> This sounds right. I'll wait until I get more "chime ins".
>
> Thanks for the response.
>
> MJM
Our fine friends at Lee Valley will sell you all the metric tapes and
rules you need. I have all of those metric tools. Even a metric watch.
"B A R R Y" wrote
> [email protected] wrote:
>>
>>
>> Experiences shared appreciated.
>>
>
> I would just use metric measuring tools and skip the conversions. <G>
Exactly ... 3.5 tick marks = 3.5 tick marks ... a rose by any other name
still gets the job done.
--
www.e-woodshop.net
Last update: 5/14/08
KarlC@ (the obvious)
On Jul 5, 5:54 pm, [email protected] wrote:
> Ok, I have a workbench plan in metric. I've gone thru all of the
> metric
> to inch conversions and wanted to ask those who have done this
> what happens here.
>
> For instance, one my measurement is for 90 x 45 x 700 which
> converts to (roughly) 3.54 x 1.7 x 27.5 = I have a feeling that
> this is close enough to standard 2 x 4 = 3.5 x 1.5 - the 27.5, is
> really depended upon how long I need this piece and might
> be subject to other components.
>
> However, I've got one at this: 70 x 70 x 810 which equals =
> 2.75 x 2.75 x 31.8.
>
> Should I make this 2.5 or 2 3/4 or 3 inches? Again, I recognize
> that it could change depending upon the other pieces, but for the
> purpose of buying lumber, do I just get something I can plane
> down to below 3 or AT 3 inches?
>
> Experiences shared appreciated.
Is this a dressy bench or a work bench? If it's a dressy bench and
you want to show off the wood, then you should buy thicker stock,
joint it and plane it to thickness. If it's work bench you could
built it up from dressed stock and make minor adjustments so you
wouldn't have to do the milling operations 2 @ 5/4 stock + 1 @ 1x
stock puts your right around the 2.75. Making it from built up stock
also provides "instant" tenons and mortises by having the middle piece
project to form a tenon or having a void to form a mortise.
R
"Fred the Red Shirt" <[email protected]> wrote in message
news:24d29ba3-698e-40ad-9cfc-ca27009b3a85@d45g2000hsc.googlegroups.com...
> On Jul 6, 8:08 am, "Tim W" <[email protected]> wrote:
>>
>
> And a pint's a pound the world around...
>
I remember my mum telling me that one, the irony of course being that a
pint is only a pound in the US and nowhere else.
Tim W
"Peter Huebner" <[email protected]> wrote in message
news:[email protected]...
>
> Hmmm, here in NZ which has been metric for 50 years or so,
> sheets also come in 1200x2400, (very few in 1220x2440) and
> additionally to your imperian fractions in 7mm, 9mm, 15mm and
> 16mm and 20mm thick, depending on material.
I left some of them out. The range of thicknesses is further complicated
here by the veneered sheets because the veneer is applied onto a standard
board so it finishes always thicker.
>
>> If you go for a beer in a bar in France you always ask for a 'demi' which
>> means a 'half' and the barman gives you 250cl, a quarter litre.Why?
>> Because
>> it is a metric half pint, despite the metric system being standard for
>> 200yrs in France beer is still drunk in pints which aren't Imperial Pints
>> but metric equivalents, and not for that matter anything to do with
>> American
>> pints which are something else again.
>
> An interesting thought. 250cl is a very large glass of beer.
> 2.5 litres. Gosh. Those French sure can put it away. Just a bit
> more than 4 pints, by the way.
>
Lol! I got it wrong! 25cl or 250ml of course!
> A standard glass of Beer in Germany used to be "A Half" ( of a
> litre) being 500ml. For people with less capacity, or thirst,
> you could get "A Small" (1/4 litre). Except the beer industry
> wanted to raise prices, but didn't dare do that, so they
> shipped smaller glasses and the sizes became 400ml (or 40cl)
> and 200ml (or 20cl) respectively.
>
> I expect the French demi will refer to 1/2 a standard beer,
> rather than half a pint, the latter would be closer to 300ml
> than 200ml.
>
Could be.
You could also ask for a pound (lb) of something in the market when I was
young, at least from the older traders although what you got was 500g.
Tim W
In article <e8dcd6e2-8549-4763-bea4-ccd4327d8988
@k37g2000hsf.googlegroups.com>, [email protected] says...
>
> However, I've got one at this: 70 x 70 x 810 which equals =
> 2.75 x 2.75 x 31.8.
>
> Should I make this 2.5 or 2 3/4 or 3 inches?
2.75 is exactly the same as 2 3/4, so that decision should be easy.
In article <[email protected]>,
[email protected] says...
>
> <[email protected]> wrote in message
> news:e8dcd6e2-8549-4763-bea4-ccd4327d8988@k37g2000hsf.googlegroups.com...
> > Ok, I have a workbench plan in metric. I've gone thru all of the
> > metric
> > to inch conversions and wanted to ask those who have done this
> > what happens here.
> >
> > For instance, one my measurement is for 90 x 45 x 700 which
> > converts to (roughly) 3.54 x 1.7 x 27.5 = I have a feeling that
> > this is close enough to standard 2 x 4 = 3.5 x 1.5 - the 27.5, is
> > really depended upon how long I need this piece and might
> > be subject to other components.
> >
> > However, I've got one at this: 70 x 70 x 810 which equals =
> > 2.75 x 2.75 x 31.8.
> >
> > Should I make this 2.5 or 2 3/4 or 3 inches? Again, I recognize
> > that it could change depending upon the other pieces, but for the
> > purpose of buying lumber, do I just get something I can plane
> > down to below 3 or AT 3 inches?
> >
> > Experiences shared appreciated.
> >
>
> A large part of the world has gone metric in the last 50yrs but it hasn't
> been a simple process. The international timber trade for instance remains
> Imperial and so even in Europe we are often working in metricised imperial.
> This means for instance that we buy sheet materials in a standard size of
> 1220 x 2440mm which turns out to be an 8' x 4' sheet. The thickness of the
> sheet however is metric, precisely sanded to 6, 12, 18, or 25mm -
> increments of six millimeters, except they aren't because they are metric
> equivalents of 1/4, 1/2, 3/4, ad 1". And that doesn't apply to certain thin
> materials which are sold as say 3.2mm thick but which are actually 1/8".
> Confused? You will be.
Hmmm, here in NZ which has been metric for 50 years or so,
sheets also come in 1200x2400, (very few in 1220x2440) and
additionally to your imperian fractions in 7mm, 9mm, 15mm and
16mm and 20mm thick, depending on material.
> If you go for a beer in a bar in France you always ask for a 'demi' which
> means a 'half' and the barman gives you 250cl, a quarter litre.Why? Because
> it is a metric half pint, despite the metric system being standard for
> 200yrs in France beer is still drunk in pints which aren't Imperial Pints
> but metric equivalents, and not for that matter anything to do with American
> pints which are something else again.
An interesting thought. 250cl is a very large glass of beer.
2.5 litres. Gosh. Those French sure can put it away. Just a bit
more than 4 pints, by the way.
A standard glass of Beer in Germany used to be "A Half" ( of a
litre) being 500ml. For people with less capacity, or thirst,
you could get "A Small" (1/4 litre). Except the beer industry
wanted to raise prices, but didn't dare do that, so they
shipped smaller glasses and the sizes became 400ml (or 40cl)
and 200ml (or 20cl) respectively.
I expect the French demi will refer to 1/2 a standard beer,
rather than half a pint, the latter would be closer to 300ml
than 200ml.
F.W.I.W. -Peter
--
=========================================
firstname dot lastname at gmail fullstop com
In article <e8dcd6e2-8549-4763-bea4-ccd4327d8988
@k37g2000hsf.googlegroups.com>, [email protected] says...
>
> Experiences shared appreciated.
>
> MJM
What Barry said: get a metric tape and ruler. Being conversant
with both systems, I have no problems converting from imperial
to metric, but I'd absolutely hate trying to do it the other
way round.
regds, -Peter
--
=========================================
firstname dot lastname at gmail fullstop com
In article <c82ba9a0-f75a-440f-b125-78f625bd8756@
79g2000hsk.googlegroups.com>, [email protected] says...
> On Jul 6, 8:08 am, "Tim W" <[email protected]> wrote:
> > ...
> >
> >
> >... The thickness of the
> > sheet however is metric, precisely sanded to 6, 12, 18, or 25mm -
> > increments of six millimeters, except they aren't because they are metric
> > equivalents of 1/4, 1/2, 3/4, ad 1". And that doesn't apply to certain thin
> > materials which are sold as say 3.2mm thick but which are actually 1/8".
> > Confused? You will be.
>
> Just wait until the US converts to metric money...
Is that when we need a metric ton of it to buy a loaf of bread? ;-)
--
Keith
"Tim W" <[email protected]> wrote in
news:[email protected]:
>
> "Fred the Red Shirt" <[email protected]> wrote in message
> news:24d29ba3-698e-40ad-9cfc-ca27009b3a85@d45g2000hsc.googlegroups.com.
> ..
>> On Jul 6, 8:08 am, "Tim W" <[email protected]> wrote:
>>>
>>
>> And a pint's a pound the world around...
>>
> I remember my mum telling me that one, the irony of course being that
> a pint is only a pound in the US and nowhere else.
>
> Tim W
>
As I mentioned before, when I was a kid in Holland, a "pond" was the
same as 1/2 kilo, 500 ram, not the 453 or so grams a pound weighs.
Moreover, an "ons" (pronounced almost the same as an ounce) always was
100 grams, not the 28 or so a "real" ounce is.
--
Best regards
Han
email address is invalid
On Sat, 05 Jul 2008 21:12:02 -0500, Swingman wrote:
> "B A R R Y" wrote
>> [email protected] wrote:
>>>
>>>
>>> Experiences shared appreciated.
>>>
>>>
>> I would just use metric measuring tools and skip the conversions. <G>
>
> Exactly ... 3.5 tick marks = 3.5 tick marks ... a rose by any other name
> still gets the job done.
But if you just do that and follow plans you'll end up with a bench 2.54
times smaller than you expected... ;-)
On Jul 6, 11:22=A0am, Tanus <[email protected]> wrote:
> Robatoy wrote:
> > On Jul 5, 8:56 pm, "[email protected]" <[email protected]>
> > wrote:
> >> Ricodjour,
>
> >>> Is this a dressy bench or a work bench? =A0If it's a dressy bench and
> >>> you want to show off the wood, then you =A0should buy thicker stock,
> >>> joint it and plane it to thickness. =A0If it's work bench you could
> >>> built it up from dressed stock and make minor adjustments so you
> >>> wouldn't have to do the milling operations 2 @ 5/4 stock + 1 @ 1x
> >>> stock puts your right around the 2.75. =A0Making it from built up sto=
ck
> >>> also provides "instant" tenons and mortises by having the middle piec=
e
> >>> project to form a tenon or having a void to form a mortise.
> >>> R
> >> This sounds right. I'll wait until I get more "chime ins".
>
> >> Thanks for the response.
>
> >> MJM
>
> > Our fine friends at Lee Valley will sell you all the metric tapes and
> > rules you need. I have all of those metric tools. Even a metric watch.
>
> Only 10 hours in the day?
>
> --
>
> Tanus
>
> http://www.home.mycybernet.net/~waugh/shop/
50. (I charge by the hour.)
On Jul 6, 8:08 am, "Tim W" <[email protected]> wrote:
> ...
>
>
>... The thickness of the
> sheet however is metric, precisely sanded to 6, 12, 18, or 25mm -
> increments of six millimeters, except they aren't because they are metric
> equivalents of 1/4, 1/2, 3/4, ad 1". And that doesn't apply to certain thin
> materials which are sold as say 3.2mm thick but which are actually 1/8".
> Confused? You will be.
Just wait until the US converts to metric money...
--
FF
On Jul 6, 8:08=A0am, "Tim W" <[email protected]> wrote:
> <[email protected]> wrote in message
>
> news:e8dcd6e2-8549-4763-bea4-ccd4327d8988@k37g2000hsf.googlegroups.com...
>
>
>
> > Ok, I have a workbench plan in metric. I've gone thru all of the
> > metric
> > to inch conversions and wanted to ask those who have done this
> > what happens here.
>
> > For instance, one my measurement is for 90 x 45 x 700 which
> > converts to (roughly) 3.54 x 1.7 x 27.5 =A0=3D I have a feeling that
> > this is close enough to standard 2 x 4 =3D 3.5 x 1.5 - the 27.5, is
> > really depended upon how long I need this piece and might
> > be subject to other components.
>
> > However, I've got one at this: 70 x 70 x 810 which equals =3D
> > 2.75 x 2.75 x 31.8.
>
> > Should I make this 2.5 or 2 3/4 or 3 inches? Again, I recognize
> > that it could change depending upon the other pieces, but for the
> > purpose of buying lumber, do I just get something I can plane
> > down to below 3 or AT 3 inches?
>
> > Experiences shared appreciated.
>
> A large part of the world has gone metric in the last 50yrs but it hasn't
> been a simple process. The international timber trade for instance remain=
s
> Imperial and so even in Europe we are often working in metricised imperia=
l.
> This means for instance that we buy sheet materials in a standard size of
> 1220 x 2440mm which turns out to be an 8' x 4' sheet. The thickness of th=
e
> sheet however is metric, precisely sanded to =A06, 12, 18, or 25mm -
> increments of six millimeters, except they aren't because they are metric
> equivalents of 1/4, 1/2, 3/4, ad 1". And that doesn't apply to certain th=
in
> materials which are sold as say 3.2mm thick but which are actually 1/8".
> Confused? You will be.
>
> As for your plans, the dimensions are clearly metricised inches in that 7=
0mm
> is 3" planed in a metric planing machine to a metric 2 3/4" (What we call=
a
> nominal 3"). 45mm again is 2" sawn timber planed both sides to finish at
> 45mm. So by all means convert to inches again but there are two pitfalls =
to
> avoid:
>
> 1. =A0 =A0Check three times that things 'add up'. eg 12mm (1/2") plus 12m=
m(1/2")
> makes 24mm which is not as much as an inch or even 25mm which is a metric
> inch.
>
> 2. Never add or subtract a mixture of the two systems. A millimeter less
> than an inch is a dimension on no rule which cannot even be expressed as =
a
> decimal or fraction of either system.
>
> If you go for a beer in a bar in France you always ask for a 'demi' which
> means a 'half' and the barman gives you 250cl, a quarter litre.Why? Becau=
se
> it is a metric half pint, despite the metric system being standard for
> 200yrs in France beer is still drunk in pints which aren't Imperial Pints
> but metric equivalents, and not for that matter anything to do with Ameri=
can
> pints which are something else again.
>
> HTH
>
> Tim W
My car gets about 28 mpg in Michigan. As soon as I drive across the
border at Port Huron, the mileage jumps to almost 35 mpg!!
Must be the oxygen-rich Kanuckistani air, eh?
Robatoy wrote:
> On Jul 5, 8:56 pm, "[email protected]" <[email protected]>
> wrote:
>> Ricodjour,
>>
>>> Is this a dressy bench or a work bench? If it's a dressy bench and
>>> you want to show off the wood, then you should buy thicker stock,
>>> joint it and plane it to thickness. If it's work bench you could
>>> built it up from dressed stock and make minor adjustments so you
>>> wouldn't have to do the milling operations 2 @ 5/4 stock + 1 @ 1x
>>> stock puts your right around the 2.75. Making it from built up stock
>>> also provides "instant" tenons and mortises by having the middle piece
>>> project to form a tenon or having a void to form a mortise.
>>> R
>> This sounds right. I'll wait until I get more "chime ins".
>>
>> Thanks for the response.
>>
>> MJM
>
> Our fine friends at Lee Valley will sell you all the metric tapes and
> rules you need. I have all of those metric tools. Even a metric watch.
Only 10 hours in the day?
--
Tanus
http://www.home.mycybernet.net/~waugh/shop/
[email protected] wrote:
>
>
> Experiences shared appreciated.
>
I would just use metric measuring tools and skip the conversions. <G>
Peter Huebner wrote:
> In article <e8dcd6e2-8549-4763-bea4-ccd4327d8988
> @k37g2000hsf.googlegroups.com>, [email protected] says...
>> Experiences shared appreciated.
>>
>> MJM
>
> What Barry said: get a metric tape and ruler. Being conversant
> with both systems, I have no problems converting from imperial
> to metric, but I'd absolutely hate trying to do it the other
> way round.
>
Most folks already have them, on the same stuff they already use.
<[email protected]> wrote in message
news:e8dcd6e2-8549-4763-bea4-ccd4327d8988@k37g2000hsf.googlegroups.com...
> Ok, I have a workbench plan in metric. I've gone thru all of the
> metric
> to inch conversions and wanted to ask those who have done this
> what happens here.
>
> For instance, one my measurement is for 90 x 45 x 700 which
> converts to (roughly) 3.54 x 1.7 x 27.5 = I have a feeling that
> this is close enough to standard 2 x 4 = 3.5 x 1.5 - the 27.5, is
> really depended upon how long I need this piece and might
> be subject to other components.
>
> However, I've got one at this: 70 x 70 x 810 which equals =
> 2.75 x 2.75 x 31.8.
>
> Should I make this 2.5 or 2 3/4 or 3 inches? Again, I recognize
> that it could change depending upon the other pieces, but for the
> purpose of buying lumber, do I just get something I can plane
> down to below 3 or AT 3 inches?
>
> Experiences shared appreciated.
>
A large part of the world has gone metric in the last 50yrs but it hasn't
been a simple process. The international timber trade for instance remains
Imperial and so even in Europe we are often working in metricised imperial.
This means for instance that we buy sheet materials in a standard size of
1220 x 2440mm which turns out to be an 8' x 4' sheet. The thickness of the
sheet however is metric, precisely sanded to 6, 12, 18, or 25mm -
increments of six millimeters, except they aren't because they are metric
equivalents of 1/4, 1/2, 3/4, ad 1". And that doesn't apply to certain thin
materials which are sold as say 3.2mm thick but which are actually 1/8".
Confused? You will be.
As for your plans, the dimensions are clearly metricised inches in that 70mm
is 3" planed in a metric planing machine to a metric 2 3/4" (What we call a
nominal 3"). 45mm again is 2" sawn timber planed both sides to finish at
45mm. So by all means convert to inches again but there are two pitfalls to
avoid:
1. Check three times that things 'add up'. eg 12mm (1/2") plus 12mm(1/2")
makes 24mm which is not as much as an inch or even 25mm which is a metric
inch.
2. Never add or subtract a mixture of the two systems. A millimeter less
than an inch is a dimension on no rule which cannot even be expressed as a
decimal or fraction of either system.
If you go for a beer in a bar in France you always ask for a 'demi' which
means a 'half' and the barman gives you 250cl, a quarter litre.Why? Because
it is a metric half pint, despite the metric system being standard for
200yrs in France beer is still drunk in pints which aren't Imperial Pints
but metric equivalents, and not for that matter anything to do with American
pints which are something else again.
HTH
Tim W
"Tim W" <[email protected]> wrote in message
> If you go for a beer in a bar in France you always ask for a 'demi' which
> means a 'half' and the barman gives you 250cl, a quarter litre.Why?
> Because it is a metric half pint, despite the metric system being standard
> for 200yrs in France beer is still drunk in pints which aren't Imperial
> Pints but metric equivalents, and not for that matter anything to do with
> American pints which are something else again.
A good reason to stick with wine or spirits in France.