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scuzzo84 |
Posted: Tue Sep 25, 2007 7:30 pm |
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Joined: 10 Nov 2005
Posts: 76
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Ive been reading about people using a vacuum bag setup for making boards. Now I just want to confirm this, but is the whole vacuum method an alternative than using a hydraulic press? thanks |
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slob-air |
Posted: Tue Sep 25, 2007 8:37 pm |
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Site Admin
Joined: 27 Oct 2001
Posts: 63453
Location: S&B HQ
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scuzzo84 |
Posted: Wed Sep 26, 2007 4:07 pm |
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Joined: 10 Nov 2005
Posts: 76
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in the examples that I read about, they uses plywood, and another example they used on a small amount of veneers like 3-4.
Could I use this vacuum method for basic 7ply popsicle decks?
Does anyone know the total cost of a basic setup? |
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yoyo |
Posted: Wed Sep 26, 2007 5:16 pm |
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ORDER OF THE SKULL
Joined: 27 Apr 2005
Posts: 2228
Location: Germany
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frokster |
Posted: Mon Jun 02, 2008 9:34 am |
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Joined: 29 May 2008
Posts: 22
Location: Wevelgem, Belgium
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This is what i think:
If you calculate the pressure you can get from a "diy" vacuumpress, it's way less then what the tech.-datasheet of most glues require.
0.9BAR (13 psi) of underpressure is a lot for any vacuumpress. Knowing that the atmospere has 1BAR (14.7 psi) that is the maximum that can be achieved (correct me if i'm wrong)
Woodglues require about 5 to 8 kg/cm�. That's 5 to 8 BAR or 70 to 110 psi.
Don't forget that bending the plies of wood also takes some of the force of the pressure.
It might look like a skate. And it might feel like a skate to most people who just ride it.
BUT CAN YOU MAKE A HIGH QUALITY SKATE with a vacuumpress? |
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slob-air |
Posted: Mon Jun 02, 2008 9:57 am |
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Joined: 27 Oct 2001
Posts: 63453
Location: S&B HQ
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Yes.
Roarrocket kits have become very popular. See the last Concrete Wave for info as www.roarrockit.com appears to be down. |
Last edited by slob-air on Tue Jun 03, 2008 8:52 am; edited 1 time in total _________________ >>>>>Get your S&B Stickers here<<<<< |
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skinny |
Posted: Mon Jun 02, 2008 1:13 pm |
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Joined: 12 Sep 2004
Posts: 2706
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my pump generates 24ng @ 5500feet elevation. The answer is yes you can. |
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frokster |
Posted: Tue Jun 03, 2008 12:06 am |
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Joined: 29 May 2008
Posts: 22
Location: Wevelgem, Belgium
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skinny wrote: my pump generates 24ng @ 5500feet elevation. The answer is yes you can.
What's ng ? 24ng, how many psi or bar is that ?
I want to believe ! |
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yoyo |
Posted: Tue Jun 03, 2008 5:26 am |
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ORDER OF THE SKULL
Joined: 27 Apr 2005
Posts: 2228
Location: Germany
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slob-air wrote: Yes.
Roarrocket kits have become very popular. See the last Concrete Wave for info as www.roarrockit.com appears to be down.
Slobmaster! Here is the correct and working link: http://www.roarockit.com/
Nevermind.................. |
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mosu101 |
Posted: Tue Jun 03, 2008 7:05 am |
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Joined: 08 Aug 2006
Posts: 5086
Location: Australia
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24ng is that 24 Hg as in 24 inchs of mercury???
just a guess (hugh pressure if it is 24 inchs of mercury) |
_________________ so upset photobucket took my avatar... |
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