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LAGrunthaner
Samba Member
Joined: March 18, 2007
Posts: 5506
Location: 1st Coast
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 Posted: Thu Dec 09, 2021 3:12 am Post subject: Great tip on testing your level for accuracy. |
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I've been watching this guys videos while out sick from school this past week. The Honest Carpenter's tip on testing an old or new level for accuracy is awesome. I should make his videos homework for my students when we start shop lessons. Glad I had all my vaccines including the pneumonia vax but the common cold got me and I'm embarrassed.  Let my guard down over Thanksgiving, never taking my mask off when with others, ever.
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VW_Jimbo 
Samba Member
Joined: May 22, 2016
Posts: 9960
Location: Huntington Beach, CA
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| Posted: Thu Dec 09, 2021 9:51 am Post subject: Re: Great tip on testing your level for accuracy. |
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I grew up in the trades and checking tools for accuracy was a task completed on a weekly basis.
I was taught to check my levels by stacking them. Sounds weird but it works great. Currently, on my work truck, I carry a string level, a torpedo level, a laser level (has a bubble at the top of the case), a 3 ft carpenter’s level, a 3’ tiling level, a 4’ carpenter’s level and a 6’ carpenter’s level. I rely on these heavily and so do my guys. Once a month, I buy lunch for everyone. I set up my 6’ level and level it on a pair of saw horses, by shimming one side or the other. Then I start stacking the 4’, check it. The 3’ and check it. The tiling 3’ and check it. And so on down the line. Typically check about 20 levels on that lunch period.
One time, YES, ONE TIME. Several years back, I started checking the levels. Set up the trusted 6’ level and then started to stack levels. All of the stacked levels were off! There were 4 of them, all reading the same inclination. In disbelief that I was going to have to buy a new 6’ level. I broke out my water level, from the shop. It is a 150 foot long section of 3/8 inch clear hose, filled with water. Each end has a line where level is, in relation to each end. So that if they were place side by side, the line, lines up, level! (Just in case you do not know about that type of level. I use it for setting up foundations. Easier than a transit and way easier!)
Anyways, I broke this monster out and set it up, so that each end of the tube was lined up with the top of the level. Yep, as plain as day, you could see the water was low on one end and high at the other end, when the level was level, according to the slewed bubble. In setting the 6’ level “level” the water tube level was off. And you know that is not correct. So, the obvious decision was that the 6’ level finally got dropped one to many times!
Long to short. A water tube level is a great tool for checking levels with. Just another way to do it!
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There is never enough time to do it right the first time, but all the time necessary the second time!
| TDCTDI wrote: |
| Basically, a whole bunch of fuckery to achieve a look. |
| 67rustavenger wrote: |
GFY's Xevin and VW_Jimbo!  |
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calvinater
Samba Member
Joined: September 06, 2014
Posts: 3328
Location: 802 The Pointless Forrest
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| Posted: Thu Dec 09, 2021 10:34 am Post subject: Re: Great tip on testing your level for accuracy. |
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Yep. Plumb bobs and water levels, gravity never lies.
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busdaddy
Samba Member
Joined: February 12, 2004
Posts: 51128
Location: Surrey B.C. Canada, but thinking of Ukraine
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| Posted: Thu Dec 09, 2021 11:30 am Post subject: Re: Great tip on testing your level for accuracy. |
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| VW_Jimbo wrote: |
I grew up in the trades and checking tools for accuracy was a task completed on a weekly basis.
I was taught to check my levels by stacking them. Sounds weird but it works great. Currently, on my work truck, I carry a string level, a torpedo level, a laser level (has a bubble at the top of the case), a 3 ft carpenter’s level, a 3’ tiling level, a 4’ carpenter’s level and a 6’ carpenter’s level. I rely on these heavily and so do my guys. Once a month, I buy lunch for everyone. I set up my 6’ level and level it on a pair of saw horses, by shimming one side or the other. Then I start stacking the 4’, check it. The 3’ and check it. The tiling 3’ and check it. And so on down the line. Typically check about 20 levels on that lunch period. |
Next time you are comparing everyone's levels do their tape measures too, compare various dimensions short and longer, I've done it a few times on bigger jobs, the results are surprising how far off some are. 
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cbeck
Samba Member
Joined: January 14, 2014
Posts: 2495
Location: high ridge, mo
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| Posted: Thu Dec 09, 2021 11:42 am Post subject: Re: Great tip on testing your level for accuracy. |
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I just swapped ends on my level several times a day, and look for discrepancies. No pencil required. Been using lasers for most everything I touch anymore, except for quick inspections.
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cdennisg
Samba Member
Joined: November 02, 2004
Posts: 20271
Location: Sandpoint, ID
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| Posted: Thu Dec 09, 2021 10:18 pm Post subject: Re: Great tip on testing your level for accuracy. |
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| busdaddy wrote: |
| VW_Jimbo wrote: |
I grew up in the trades and checking tools for accuracy was a task completed on a weekly basis.
I was taught to check my levels by stacking them. Sounds weird but it works great. Currently, on my work truck, I carry a string level, a torpedo level, a laser level (has a bubble at the top of the case), a 3 ft carpenter’s level, a 3’ tiling level, a 4’ carpenter’s level and a 6’ carpenter’s level. I rely on these heavily and so do my guys. Once a month, I buy lunch for everyone. I set up my 6’ level and level it on a pair of saw horses, by shimming one side or the other. Then I start stacking the 4’, check it. The 3’ and check it. The tiling 3’ and check it. And so on down the line. Typically check about 20 levels on that lunch period. |
Next time you are comparing everyone's levels do their tape measures too, compare various dimensions short and longer, I've done it a few times on bigger jobs, the results are surprising how far off some are. |
Whenever anyone was cutting for someone else on a job, we compared tapes. Inevitably, someone's level had "a tweaked beak" from being dropped. Easy to fix.
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cdennisg
Samba Member
Joined: November 02, 2004
Posts: 20271
Location: Sandpoint, ID
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| Posted: Thu Dec 09, 2021 10:31 pm Post subject: Re: Great tip on testing your level for accuracy. |
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| LAGrunthaner wrote: |
I've been watching this guys videos while out sick from school this past week. The Honest Carpenter's tip on testing an old or new level for accuracy is awesome. I should make his videos homework for my students when we start shop lessons. Glad I had all my vaccines including the pneumonia vax but the common cold got me and I'm embarrassed. Let my guard down over Thanksgiving, never taking my mask off when with others, ever.
Link
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He has some great stuff. I have enjoyed watching his videos, too.
Honestly, I thought that process was common knowledge. After a little thought, I get why it isn't. Was taught it by a very smart man, a very long time ago.
I have a nice Stabila set of magnetic levels I have been using for nearly two decades with no issues. I have an odd Irwin 4', that I can adjust the vial with a hex key. That is my beater level, for doing concrete forms and such.
I bought a 1980's Japanese made transit (a long distance level) this summer. At first I thought it was way off, then I realized I was setting it wrong, since I was accustomed to a very different transit that my boss had owned for many years. I am looking forward to using that transit for a few projects around the property next summer.
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challomoner
Samba Member
Joined: October 13, 2010
Posts: 1214
Location: IRELAND
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| Posted: Fri Dec 10, 2021 4:36 am Post subject: Re: Great tip on testing your level for accuracy. |
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| Spirit levels should be calibrated at least once a week by dropping them off the scaffold you are working on. |
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Q-Dog
Samba Member
Joined: April 05, 2010
Posts: 8699
Location: Sunset, Louisiana
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| Posted: Fri Dec 10, 2021 6:34 am Post subject: Re: Great tip on testing your level for accuracy. |
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Not gonna watch a utube video, but any time I use a level I check it by putting it on something that won't move, make note of the bubble, then flip it around end for end and check again. If the bubble is the same each direction you are good to go. It takes all of 5 seconds to do.
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'69 Dune Buggy
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Cusser
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Joined: October 02, 2006
Posts: 31362
Location: Hot Arizona
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raygreenwood
Samba Member
Joined: November 24, 2008
Posts: 21513
Location: Oklahoma City
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| Posted: Fri Dec 10, 2021 9:20 am Post subject: Re: Great tip on testing your level for accuracy. |
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| busdaddy wrote: |
| VW_Jimbo wrote: |
I grew up in the trades and checking tools for accuracy was a task completed on a weekly basis.
I was taught to check my levels by stacking them. Sounds weird but it works great. Currently, on my work truck, I carry a string level, a torpedo level, a laser level (has a bubble at the top of the case), a 3 ft carpenter’s level, a 3’ tiling level, a 4’ carpenter’s level and a 6’ carpenter’s level. I rely on these heavily and so do my guys. Once a month, I buy lunch for everyone. I set up my 6’ level and level it on a pair of saw horses, by shimming one side or the other. Then I start stacking the 4’, check it. The 3’ and check it. The tiling 3’ and check it. And so on down the line. Typically check about 20 levels on that lunch period. |
Next time you are comparing everyone's levels do their tape measures too, compare various dimensions short and longer, I've done it a few times on bigger jobs, the results are surprising how far off some are. |
I have had numerous clients over the years that MAKE tape measures and rulers. The graduations were and substantially still are....screen printed.
The logistics of the process of printing a long tape measure had a maddening QA system. And yes there is a "master" measurement ruler or tape for process QC.....and in too many cases.....there are problems with the master! 
Ray |
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cbeck
Samba Member
Joined: January 14, 2014
Posts: 2495
Location: high ridge, mo
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| Posted: Fri Dec 10, 2021 5:11 pm Post subject: Re: Great tip on testing your level for accuracy. |
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| Q-Dog wrote: |
| Not gonna watch a utube video, but any time I use a level I check it by putting it on something that won't move, make note of the bubble, then flip it around end for end and check again. If the bubble is the same each direction you are good to go. It takes all of 5 seconds to do. |
Like that shelf right above where he marked up a perfectly good wall.
Then put that murf verticle on the wall and check the other bubble.
Course the level isn't any better than the person using it.
Now to find that video where beavis and butthead teach you how not to use a table saw.
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