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violinvic
 Post subject: Deflection testing
PostPosted: Wed Sep 26, 2012 1:28 pm 
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Cocobolo
Cocobolo

Joined: Wed Dec 22, 2010 12:49 pm
Posts: 273
First name: Victor
Last Name: Seal
City: Osseo
State: MI
Zip/Postal Code: 49266
Country: USA
Focus: Build
Status: Amateur
I want to start doing deflection testing on my tops. Would someone please describe, in detail, the process that you use? Pals, Vic.
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meddlingfool
 Post subject: Re: Deflection testing
PostPosted: Wed Sep 26, 2012 1:39 pm 
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Brazilian Rosewood
Brazilian Rosewood

Joined: Wed Feb 20, 2008 7:15 pm
Posts: 7548
First name: Ed
Last Name: Bond
City: Nanaimo
Country: Canada
Focus: Build
Status: Professional
Heres my way

Two angle iron/aluminum supports, placed exactly 18" apart. Make sure the tops of the bars are flat in line with each other.
Draw an x from corner to corner.
Over the center of the x place your dial gauge.
Place top over angle iron
Add weight
Measure deflection
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Dave Stewart
 Post subject: Re: Deflection testing
PostPosted: Wed Sep 26, 2012 1:48 pm 
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Koa
Koa
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Joined: Wed Jan 31, 2007 7:17 am
Posts: 1383
Location: Canada
Vic, a couple of threads just recently talked about this. (You're not talking about violins, are you??)
viewtopic.php?f=10101&t=37774&hilit=Deflection
viewtopic.php?f=10101&t=37822&hilit=Deflection

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Dave
Milton, ON
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violinvic
 Post subject: Re: Deflection testing
PostPosted: Wed Sep 26, 2012 2:39 pm 
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Cocobolo
Cocobolo

Joined: Wed Dec 22, 2010 12:49 pm
Posts: 273
First name: Victor
Last Name: Seal
City: Osseo
State: MI
Zip/Postal Code: 49266
Country: USA
Focus: Build
Status: Amateur
I should stated that this is for guitar tops.
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