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#1
Posted to rec.woodworking
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Another POV on ww'ing measuring "precision" ...
I don't necessarily subscribe to the .001" accuracy in woodworking espoused
in some of the threads floating around here lately (particularly when a 4" wide board cut this morning at 65 degree/70% rh may well be a different width tomorrow afternoon when it's 95/95), but with wood getting more expensive by the day, it does pay to develop a method/philosophy of measuring, marking, layout and cutting that can get you "consistency" in the dimensioning of your parts ... which is what you should be shooting for when things have to go together as a whole. On the methodology side, no amount of precision measuring will get you this needed consistency like the "batch" cutting/routing of parts, and the meticulous and consistent "referencing" of faces and edges to fences and cutting surfaces when machining/cutting ... particularly for a "production run" of multiple pieces in a small shop environment. On the measuring side, I find myself going back repeatedly to the following tools for obtaining this necessary consistency, to the point that I even keep these, and like items, on a large plastic TV tray, lined with a non-skid rubber mat, so I can move them en masse around the shop as I need them: Incra rule set (with the Bend rule the most used) http://www.incra.biz/Products/RuleSets.html Veritas Saddle square (one of the most used items in the shop) http://www.leevalley.com/wood/page.a...936,50298&ap=1 ..05mm mechanical pencil (steal this from my shop and you're dead!) Sliding bevel square http://www.leevalley.com/wood/page.a...=1,42936,50298 Sliding Square http://www.leevalley.com/wood/page.a...98&cat=1,42936 Starret combination square With the above (and paying particular attention to maintaining reference edges), careful layout, marking and subsequent machine setup can be done with enough consistency to carry you from part 1 to part 101 with confidence, regardless of how many zero's of precision you put behind the period. FWIW/YMMV, etc. ... -- www.e-woodshop.net Last update: 8/29/06 |
#2
Posted to rec.woodworking
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Another POV on ww'ing measuring "precision" ...
"Swingman" wrote in message ... I don't necessarily subscribe to the .001" accuracy in woodworking espoused in some of the threads floating around here lately (particularly when a 4" wide board cut this morning at 65 degree/70% rh may well be a different width tomorrow afternoon when it's 95/95), but with wood getting more expensive by the day, it does pay to develop a method/philosophy of measuring, marking, layout and cutting that can get you "consistency" in the dimensioning of your parts ... which is what you should be shooting for when things have to go together as a whole. On the methodology side, no amount of precision measuring will get you this needed consistency like the "batch" cutting/routing of parts, and the meticulous and consistent "referencing" of faces and edges to fences and cutting surfaces when machining/cutting ... particularly for a "production run" of multiple pieces in a small shop environment. On the measuring side, I find myself going back repeatedly to the following tools for obtaining this necessary consistency, to the point that I even keep these, and like items, on a large plastic TV tray, lined with a non-skid rubber mat, so I can move them en masse around the shop as I need them: Incra rule set (with the Bend rule the most used) http://www.incra.biz/Products/RuleSets.html Veritas Saddle square (one of the most used items in the shop) http://www.leevalley.com/wood/page.a...936,50298&ap=1 .05mm mechanical pencil (steal this from my shop and you're dead!) Sliding bevel square http://www.leevalley.com/wood/page.a...=1,42936,50298 Sliding Square http://www.leevalley.com/wood/page.a...98&cat=1,42936 Starret combination square With the above (and paying particular attention to maintaining reference edges), careful layout, marking and subsequent machine setup can be done with enough consistency to carry you from part 1 to part 101 with confidence, regardless of how many zero's of precision you put behind the period. FWIW/YMMV, etc. ... -- www.e-woodshop.net Last update: 8/29/06 Swingman, I agree with you generally but marking methods and repeatability is always my nemesis. I (almost always) exclusively use my Starrett combination square or sliding bevel along with my 24" rule to make a story pole/stick marked with a sharp knife and notes with actual measurements. This makes repeatability almost stupid-proof. However for machine setups, I do go back to my machinist attitude and set the machines up with dial indicators, feeler gages, micrometers and dead flat straightedges. My personal tolerances for woodworking machines are +/- 0.002" for most setups. An 8lb single jack persuades any machine that refuses to cooperate! Dave Posted Via Usenet.com Premium Usenet Newsgroup Services ---------------------------------------------------------- ** SPEED ** RETENTION ** COMPLETION ** ANONYMITY ** ---------------------------------------------------------- http://www.usenet.com |
#3
Posted to rec.woodworking
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Another POV on ww'ing measuring "precision" ...
Swingman wrote: I don't necessarily subscribe to the .001" accuracy in woodworking espoused in some of the threads floating around here lately (particularly when a 4" wide board cut this morning at 65 degree/70% rh may well be a different width tomorrow afternoon when it's 95/95), but.......[snip] I have a mechanical vernier calliper which is my depth gauge, thickness measuring device and all around do-all to 5". I have a Lee Valley 12" rule... do NOT touch! **** with my mechanical pencils and death will be imminent. My 12" Swanson Speed square(s) a Johnson 48" rule and my 150" 6" x .25" straight edge.. I mean... don't even LOOK at it, okay? I had that one milled by a guy who does propeller shafts for gas-turbine driven high-speed landing craft for the US Marines.... like I said...don't touch! It is over 12 feet of ..002" Other than that, thumbs up to the SwingMeister who seems to do things the way they ought to be done.... not so sure about western Swing music... I went to see my hero John Prine last weekend in London..and I am going to see what is left of The Who this coming weekend.... so whatthe**** do I know, eh? Prine's song titled Some Humans Ain't Human ripped my heart apart. |
#4
Posted to rec.woodworking
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Another POV on ww'ing measuring "precision" ...
On 25 Sep 2006 18:54:13 -0700, "Robatoy" wrote:
Other than that, thumbs up to the SwingMeister who seems to do things the way they ought to be done.... not so sure about western Swing music... You have to get that man to send you a CD of his band. It WILL make you a true believer. As to the measurements - I own every measurement device known to man and have found that "a little bit more" and "a little bit less" are the only truths of wooddorking measurement. (watson - who owns both a six foot and a four foot Starrett straight edge, a Starrett Dial Indicator, a Starrett Vernier, and would have happily measured in nano-rch's at a certain point in his life - but is happy now to have it, "just about dead close boogie".) Regards, Tom Watson tjwatson1ATcomcastDOTnet (real email) http://home.comcast.net/~tjwatson1/ |
#5
Posted to rec.woodworking
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Another POV on ww'ing measuring "precision" ...
There is a rather old measurement term that uses a
human hair that is not used in mixed company. I recall carpenters using this term over 50 years ago and it's still used in the construction trades even today. Tom Watson wrote: (watson - who owns both a six foot and a four foot Starrett straight edge, a Starrett Dial Indicator, a Starrett Vernier, and would have happily measured in nano-rch's at a certain point in his life - but is happy now to have it, "just about dead close boogie".) Regards, Tom Watson tjwatson1ATcomcastDOTnet (real email) http://home.comcast.net/~tjwatson1/ |
#6
Posted to rec.woodworking
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Another POV on ww'ing measuring "precision" ...
Pat Barber wrote: There is a rather old measurement term that uses a human hair that is not used in mixed company. I recall carpenters using this term over 50 years ago and it's still used in the construction trades even today. Yup, c-hairs come in red, blonde and black..all slightly different in dimension. But the differences are usually regional and are not a recognized international standard.... especially in Brazil where such measurements are scarce. I wouldn't want to be a cabinetmaker in Brazil... or in certain nordic parts of Russia either...I mean..we're talking rope... will you look at the time! r |
#7
Posted to rec.woodworking
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Another POV on ww'ing measuring "precision" ...
Pat Barber wrote:
There is a rather old measurement term that uses a human hair that is not used in mixed company. I recall carpenters using this term over 50 years ago and it's still used in the construction trades even today. Current fashion dictates that less of them are around for reference purposes. G |
#8
Posted to rec.woodworking
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Another POV on ww'ing measuring "precision" ...
"Robatoy" wrote in message Pat Barber wrote: There is a rather old measurement term that uses a human hair that is not used in mixed company. I recall carpenters using this term over 50 years ago and it's still used in the construction trades even today. Yup, c-hairs come in red, blonde and black..all slightly different in dimension. But the differences are usually regional and are not a recognized international standard.... especially in Brazil where such measurements are scarce. I wouldn't want to be a cabinetmaker in Brazil... or in certain nordic parts of Russia either...I mean..we're talking rope... Actually, I've done extensive personal research into this area and can assure you that red is pretty much the same world wide; with blonde, you can only guess unless the lights are on; and with black, like the markings on a tape measure, you must do a side by side comparison. -- www.e-woodshop.net Last update: 8/29/06 |
#9
Posted to rec.woodworking
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Another POV on ww'ing measuring "precision" ...
"B A R R Y" wrote in message
Current fashion dictates that less of them are around for reference purposes. G Personally, I hate that trend ... I think. -- www.e-woodshop.net Last update: 8/29/06 |
#10
Posted to rec.woodworking
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Another POV on ww'ing measuring "precision" ...
Swingman wrote:
Personally, I hate that trend ... I think. A little is better than none, and way better than too much. G |
#11
Posted to rec.woodworking
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Another POV on ww'ing measuring "precision" ...
"B A R R Y" wrote in message Swingman wrote: Personally, I hate that trend ... I think. A little is better than none, and way better than too much. G Obviously, more research is in order. -- www.e-woodshop.net Last update: 8/29/06 |
#12
Posted to rec.woodworking
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Another POV on ww'ing measuring "precision" ...
Swingman wrote:
"B A R R Y" wrote in message Swingman wrote: Personally, I hate that trend ... I think. A little is better than none, and way better than too much. G Obviously, more research is in order. Agreed! Yet another area of research revolutionized by the Internet! Or so I've heard... G BTW, I just returned from my local Woodcraft, and they now stock a finishing product called "Bush Oil"! |
#13
Posted to rec.woodworking
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Another POV on ww'ing measuring "precision" ...
BTW, I just returned from my local Woodcraft, and they now stock a
finishing product called "Bush Oil"! There you go. Persuant to the previous discussion, some people apparently have no use for the stuff. g Lee -- To e-mail, replace "bucketofspam" with "dleegordon" _________________________________ Lee Gordon http://www.leegordonproductions.com |
#14
Posted to rec.woodworking
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Another POV on ww'ing measuring "precision" ...
Lee Gordon wrote:
BTW, I just returned from my local Woodcraft, and they now stock a finishing product called "Bush Oil"! There you go. Persuant to the previous discussion, some people apparently have no use for the stuff. g Lee For those, there is a large selection of waxes... |
#15
Posted to rec.woodworking
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Another POV on ww'ing measuring "precision" ...
I agree with the notion that much more research is in order.
Being an 'get-to-work' kinda guy. I'll roll up my sleeve and get started. r |
#16
Posted to rec.woodworking
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Another POV on ww'ing measuring "precision" ...
Whilst I could not agree more, (that certain protoplasmic dimensional
analysis is as fun as it gets), I have done some serious studies on getting to .001" with routers. For a temporary diversion see the http://patwarner.com/routing_to_001.html link for more on this. __________________________________________________ _____ Swingman wrote: I don't necessarily subscribe to the .001" accuracy in woodworking espoused in some of the threads floating around here lately (particularly when a 4" wide board cut this morning at 65 degree/70% rh may well be a different width tomorrow afternoon when it's 95/95), but with wood getting more expensive by the day, it does pay to develop a method/philosophy of measuring, marking, layout and cutting that can get you "consistency" in the dimensioning of your parts ... which is what you should be shooting for when things have to go together as a whole. On the methodology side, no amount of precision measuring will get you this needed consistency like the "batch" cutting/routing of parts, and the meticulous and consistent "referencing" of faces and edges to fences and cutting surfaces when machining/cutting ... particularly for a "production run" of multiple pieces in a small shop environment. On the measuring side, I find myself going back repeatedly to the following tools for obtaining this necessary consistency, to the point that I even keep these, and like items, on a large plastic TV tray, lined with a non-skid rubber mat, so I can move them en masse around the shop as I need them: Incra rule set (with the Bend rule the most used) http://www.incra.biz/Products/RuleSets.html Veritas Saddle square (one of the most used items in the shop) http://www.leevalley.com/wood/page.a...936,50298&ap=1 .05mm mechanical pencil (steal this from my shop and you're dead!) Sliding bevel square http://www.leevalley.com/wood/page.a...=1,42936,50298 Sliding Square http://www.leevalley.com/wood/page.a...98&cat=1,42936 Starret combination square With the above (and paying particular attention to maintaining reference edges), careful layout, marking and subsequent machine setup can be done with enough consistency to carry you from part 1 to part 101 with confidence, regardless of how many zero's of precision you put behind the period. FWIW/YMMV, etc. ... -- www.e-woodshop.net Last update: 8/29/06 |
#17
Posted to rec.woodworking
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Another POV on ww'ing measuring "precision" ...
I once worked with a Swiss optics technician that used the corresponding
slang term in either German or Swiss (I don't remember). A bunch of us picked it up over the years. When I started using it around the house, the wife thought it was a real unit of measure. She even started using it. I was getting quite a chuckle until I told her what it meant. I had trouble telling her with a straight face. Man, that was funny. Strange, she didn't think so at the time. :-) -- d phi / dt Pat Barber wrote: There is a rather old measurement term that uses a human hair that is not used in mixed company. I recall carpenters using this term over 50 years ago and it's still used in the construction trades even today. Tom Watson wrote: (watson - who owns both a six foot and a four foot Starrett straight edge, a Starrett Dial Indicator, a Starrett Vernier, and would have happily measured in nano-rch's at a certain point in his life - but is happy now to have it, "just about dead close boogie".) Regards, Tom Watson tjwatson1ATcomcastDOTnet (real email) http://home.comcast.net/~tjwatson1/ |
#19
Posted to rec.woodworking
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Another POV on ww'ing measuring "precision" ...
After I reached my current age, I found that some
things are best left not said. Women will hold a grudge for their entire life. Blue Enamel wrote: I once worked with a Swiss optics technician that used the corresponding slang term in either German or Swiss (I don't remember). A bunch of us picked it up over the years. When I started using it around the house, the wife thought it was a real unit of measure. She even started using it. I was getting quite a chuckle until I told her what it meant. I had trouble telling her with a straight face. Man, that was funny. Strange, she didn't think so at the time. :-) -- d phi / dt Pat Barber wrote: There is a rather old measurement term that uses a human hair that is not used in mixed company. I recall carpenters using this term over 50 years ago and it's still used in the construction trades even today. Tom Watson wrote: (watson - who owns both a six foot and a four foot Starrett straight edge, a Starrett Dial Indicator, a Starrett Vernier, and would have happily measured in nano-rch's at a certain point in his life - but is happy now to have it, "just about dead close boogie".) Regards, Tom Watson tjwatson1ATcomcastDOTnet (real email) http://home.comcast.net/~tjwatson1/ |
#20
Posted to rec.woodworking
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Another POV on ww'ing measuring "precision" ...
Pat Barber wrote:
After I reached my current age, I found that some things are best left not said. Women will hold a grudge for their entire life. snipped No, Just for the rest of yours. Joe |
#21
Posted to rec.woodworking
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Another POV on ww'ing measuring "precision" ...
We need to be careful, very careful.
Even on the wurld wiide weeb, things get out. Joe Gorman wrote: Pat Barber wrote: Women will hold a grudge for their entire life. No, Just for the rest of yours. Joe |
#22
Posted to rec.woodworking
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Another POV on ww'ing measuring "precision" ...
"Blue Enamel" wrote in message ... I once worked with a Swiss optics technician that used the corresponding slang term in either German or Swiss (I don't remember). A bunch of us picked it up over the years. When I started using it around the house, the wife thought it was a real unit of measure. She even started using it. I was getting quite a chuckle until I told her what it meant. I had trouble telling her with a straight face. Man, that was funny. Strange, she didn't think so at the time. :-) And the German/Swiss slang term for this unit of measure is? -- Roger Shoaf About the time I had mastered getting the toothpaste back in the tube, then they come up with this striped stuff. |
#23
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Another POV on ww'ing measuring "precision" ...
On Wed, 27 Sep 2006 18:05:13 -0700, "Roger Shoaf"
wrote: And the German/Swiss slang term for this unit of measure is? Babel fish says that it is: königliches ****haar Hell, I didn't translate it. Regards, Tom Watson tjwatson1ATcomcastDOTnet (real email) http://home.comcast.net/~tjwatson1/ |
#24
Posted to rec.woodworking
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Another POV on ww'ing measuring "precision" ...
The pronounciation was "futsahurly". I never saw it written down, but I
sure heard it a lot. Especially since the technician went to numerous Deep Purple shows in Europe when he was younger. -- Blue Tom Watson wrote: On Wed, 27 Sep 2006 18:05:13 -0700, "Roger Shoaf" wrote: And the German/Swiss slang term for this unit of measure is? Babel fish says that it is: königliches ****haar Hell, I didn't translate it. Regards, Tom Watson tjwatson1ATcomcastDOTnet (real email) http://home.comcast.net/~tjwatson1/ |
#25
Posted to rec.woodworking
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Another POV on ww'ing measuring "precision" ...
On Tue, 26 Sep 2006 11:08:24 -0500, "Swingman"
wrote: "Robatoy" wrote in message Pat Barber wrote: There is a rather old measurement term that uses a human hair that is not used in mixed company. I recall carpenters using this term over 50 years ago and it's still used in the construction trades even today. Yup, c-hairs come in red, blonde and black..all slightly different in dimension. But the differences are usually regional and are not a recognized international standard.... especially in Brazil where such measurements are scarce. I wouldn't want to be a cabinetmaker in Brazil... or in certain nordic parts of Russia either...I mean..we're talking rope... Actually, I've done extensive personal research into this area and can assure you that red is pretty much the same world wide; with blonde, you can only guess unless the lights are on; and with black, like the markings on a tape measure, you must do a side by side comparison. Isn't that why rch is the only one used for measurement? http://www.urbandictionary.com/define.php?term=R.C.H. |
#26
Posted to rec.woodworking
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Another POV on ww'ing measuring "precision" ...
George Shouse wrote:
Isn't that why rch is the only one used for measurement? Depends on whether you reference the straight or curly version. Lew |
#27
Posted to rec.woodworking
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Another POV on ww'ing measuring "precision" ...
Uh Oh...now we are "splitting hairs", which is also
used as a measurement. Lew Hodgett wrote: Depends on whether you reference the straight or curly version. Lew |
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