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Vacuum pump

 
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surfalex



Joined: 08 Aug 2008
Posts: 73

PostPosted: Mon Apr 26, 2021 9:06 am    Post subject: Vacuum pump Reply with quote

Vacuum pump for board building and repairs
Any suggestions ?
I got a cheap pump on Amazon ( zeny 3.5 Cfm )
Plenty of power but extremely smoky and sputters oil through exhaust ( big mess )
Need something cleaner
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dllee



Joined: 03 Jul 2009
Posts: 5054
Location: East Bay

PostPosted: Mon Apr 26, 2021 11:11 am    Post subject: Reply with quote

Your vacuum cleaner or a 24 dollar shop vac.
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Gwarn



Joined: 22 May 2013
Posts: 111
Location: SF

PostPosted: Tue Apr 27, 2021 8:19 am    Post subject: Reply with quote

Diaphragm pumps work the best.

Quiet operation and they don't contaminate the environment with oil.

Ebay or craigslist



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thombiz



Joined: 25 Jun 2007
Posts: 795
Location: Corpus Christi

PostPosted: Sun May 02, 2021 11:22 pm    Post subject: Reply with quote

I built my own vacuum press using the info I found here: https://www.veneersupplies.com/pages/DIY__Vacuum__Press.html There are pictures of built vacuum presses. The one I built is the RED one in the first picture of homemade presses.
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inf2003



Joined: 15 Jan 2009
Posts: 148

PostPosted: Mon May 03, 2021 10:18 am    Post subject: Reply with quote

I bought mine here. The owner builds them and has great customer support. Works great . Makes custom bags and has been in business many years.

https://veneersystems.com/
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dmilovich



Joined: 19 Jul 2009
Posts: 96

PostPosted: Tue May 04, 2021 7:51 am    Post subject: Reply with quote

Be careful when vacuum bagging a board - its possible to collapse the EPS or similar foam. Board Lady recommended no more than 7-8 on the gauge, I believe.
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westender



Joined: 02 Aug 2007
Posts: 1276
Location: Portland / Gorge

PostPosted: Tue May 04, 2021 1:37 pm    Post subject: Reply with quote

Brian Hinde always used a Shopvac and would explain in great detail why he did it that way. I remember it had something to do with 7.
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rigitrite



Joined: 19 Sep 2007
Posts: 515
Location: Kansas City

PostPosted: Tue May 04, 2021 1:37 pm    Post subject: Reply with quote

I you have an abundance of compressed air supply, then you might wanna look at a venturi pump: cheap, easy to use, effective, no moving parts, almost impossible to break. I use mine to evacuate the A/C system when doing work on cars and it works great. You can get them from Harbour Freight.
With bagging, you'd just have to install a ball valve and close it off after you pull the vacuum you want. Then every "X" interval suck it down somemore as the resin off-gasses.

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Kansas City
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