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Old 18th March 2009, 05:27 PM   #21
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Quote:
Originally posted by Bob Brines
... if I have metric plans, I use a metric ruler and if I have English plans, I use an English ruler.
Maybe its a Canadian thing, but any tape measure worth its salt has both on it.

dave
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Old 18th March 2009, 05:39 PM   #22
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Default measurements

I've been turning money into sawdust for quite a few years now and I've learned to use measurements less and less.
Learning about some 'traditional' methods of work can save a lot of problems for the average woodworker.
Some possibilities:
Work from a full-size plan- it won't take that long to draw (yes, with a pencil, not a computer). Posterboard aka Bristol board works well for smaller projects, or a chunk of 1/8 ply if you have some handy. It's cheaper if you can fix mistakes with a pencil.
Layout aka 'story' sticks
Cut your larger panels to measure, then mark the position of the 'minor' components on the panels, then cut to fit.
Assemble as you go, cut to fit.
Make temporary 'spacer blocks' from scrap to position pieces for assembly.
If I am doing an operation more than once, I start thinking about quick jigs and fixtures to avoid measurement errors. Drilling,routing jigs can save a lot of measurement.
Going directly from a cutting list to a pile of pieces is important if you are in a production environment, or producing flat-pack kits, but older techniques work well for one-off projects.

Cheers
John
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Old 18th March 2009, 05:52 PM   #23
Aengus is offline Aengus  Canada
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Quote:
Maybe its a Canadian thing, but any tape measure worth its salt has both on it.
No no no no no (I do feel strongly about this). Tape measures with both are an abomination - the measurement you want is always on the wrong edge or upside down. Or the markings are confusing and you have to stop and think about which means what. Or you take a quick measure, walk towards the saw muttering "51, 51" and get there only to say "Wait a minute: surely it was only about 20 inches".

Have several of both; work in one system at a time; and use measuring tools marked exclusively in that system.

That having been said, I admit to owning one tape measure and a couple of rulers marked in both Imperial and metric - they're kept in desk drawers upstairs, well away from the shop, and used for non-critical measurement only.

Regards.

Aengus
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Old 18th March 2009, 06:05 PM   #24
chrisb is offline chrisb  Canada
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John, a full size set of plans for Saburo/ Hiro / Sachiko would be over 6 ft tall by 18" wide.

I prefer to draw in CAD (even to the point of double checking drawings by others), to help lay out my cut plans, and occasionally migrate a DXF through our CAD/CAM to CNC router.
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Old 18th March 2009, 06:16 PM   #25
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Default Re: measurements

Quote:
Originally posted by VictoriaGuy
Some possibilities:
Work from a full-size plan- it won't take that long to draw (yes, with a pencil, not a computer).
I have an ancient 1st gen HP inkjet plotter a client gave me. I've more than once considered trying to get it up & running and printout full size plans on "vellum" for resale... involves resurrecting some old computers and figuring out how to talk to them thou.

dave
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Old 18th March 2009, 06:31 PM   #26
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Quote:
Originally posted by chrisb
John, a full size set of plans for Saburo/ Hiro / Sachiko would be over 6 ft tall by 18" wide.
Brown wrapping paper comes in big rolls. A few sheets of posterboard would do it. And, where I live, I can get 4x8 sheets of cheap 1/8 ply aka 'doorskins' quite easily. I prefer the ply since I can use the edge to align a square more easily.


Quote:

I prefer to draw in CAD (even to the point of double checking drawings by others), to help lay out my cut plans, and occasionally migrate a DXF through our CAD/CAM to CNC router.
Not the usual home workshop! And in the time it would take me to learn AutoCad, I could build all the audio equipment I would ever need. If you already have those skills and access to hitech equipment, though, it would be silly not to use them.

John
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Old 18th March 2009, 06:35 PM   #27
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Default Re: Re: measurements

Quote:
Originally posted by planet10


I have an ancient 1st gen HP inkjet plotter a client gave me. I've more than once considered trying to get it up & running and printout full size plans on "vellum" for resale... involves resurrecting some old computers and figuring out how to talk to them thou.

dave
Good idea, Dave. Boat plans are available full size- from kayaks to 10m sailboats, for folks who don't want to learn lofting. So there would be a market for full-size speaker plans, I'd think.
Just transfer the corner locations to the panels by nail/awl through the pattern?

John
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Old 18th March 2009, 07:45 PM   #28
chrisb is offline chrisb  Canada
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Quote:
Originally posted by VictoriaGuy


Not the usual home workshop! And in the time it would take me to learn AutoCad, I could build all the audio equipment I would ever need. If you already have those skills and access to hitech equipment, though, it would be silly not to use them.

John

You're certainly right about the learning curve for AutoCAD - I'm far too old to learn that one - for over a decade I've been using an ancient (by today's standards) and very intuitive program 2D called Autosketch. (Release 2.1 circa 1995)

I originally learned this for quickie space planning for office and home furnishing layouts at work, and it does all I need, and will even run on my iMac at home in Parallels (rather limited support for print drivers, though )
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Old 18th March 2009, 08:10 PM   #29
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Quote:
Originally posted by VictoriaGuy
And in the time it would take me to learn AutoCad
AutoCAD sucks. I've been using VectorWorks since 1986, i still don't use a fraction of its capability but i can do a drawing pretty quick.

dave
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Old 12th February 2010, 06:39 PM   #30
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Resurrecting this old thread with exactly the same question...

Sounds like the OP found a source of 3/4 BBply in the right dimensions.

I'm having trouble finding it here in Calgary. Local lumber yards offer 5 x 5 foot sheets.

Home Depot has larger sheets, but it's non-Baltic Birch ply, and as described above, few plys to it, uneven, rough, voids. Looks like "carp."

Does anyone know of a source around, or who can deliver to Calgary? Or are there alternate materials more commonly available in > 6 ft lengths?

Thanks in advance fellows.

-Brenton
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