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| Vacuum Pressure Necessary for the Bridge? http://www-.luthiersforum.com/forum/viewtopic.php?f=10101&t=26813 |
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| Author: | j.Brown [ Thu Apr 01, 2010 10:09 pm ] |
| Post subject: | Vacuum Pressure Necessary for the Bridge? |
How many Hg should I be pulling for the bridge glue-down? I'm getting about 21" if I just use the vacuum side of my pump and I can manage 23" if I stage it with the pressure side. It does take a bit of time to get from 19 to 23 though. Should I look at getting a new pump? I'm assuming that whatever the answer for the bridge, a similar answer would go for the top or back bracing.... Thanks. -j. |
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| Author: | Jim Watts [ Thu Apr 01, 2010 11:11 pm ] |
| Post subject: | Re: Vacuum Pressure Necessary for the Bridge? |
21 inches of Hg will work, I live at 6500 ft and that's about all I can get. I've never had a bridge fail with titebond or hhg. Of course a good fit is important. |
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| Author: | j.Brown [ Fri Apr 02, 2010 1:12 pm ] |
| Post subject: | Re: Vacuum Pressure Necessary for the Bridge? |
Can I assume that same pressure will work for bracing? |
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| Author: | Robbie O'Brien [ Fri Apr 02, 2010 2:22 pm ] |
| Post subject: | Re: Vacuum Pressure Necessary for the Bridge? |
Yes J. That amount of Hg will work. |
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