Contact   Imprint   Advertising   Guidelines

what pump to use for vacuum bagging

here you can exchange your experience and datas about your home build boards


kiteguy
Medium Poster
Posts: 70
Joined: Sun Jul 30, 2006 6:43 pm
Kiting since: 0
Brand Affiliation: None
Location: salt spring is. b.c. canada

what pump to use for vacuum bagging

Postby kiteguy » Sat Apr 03, 2010 11:44 pm

my friend and i are trying to figure out how to make a vacuum bag pump out of a fridge pump but can't seem to understand how it all works. if anyone can explain it with pictures or what ever.our problem is the pump itself,not the bagging tecnique.what to hook up to the pump and where on the pump to hook up to is the question. thanks

pdkite
Frequent Poster
Posts: 365
Joined: Thu Feb 21, 2008 8:51 pm
Kiting since: 2007
Style: balls to the wall. don't hold back
Gear: 2006 Airush Lift 10m and 12m
2007 Liquid Force Recoil 130 x 39

Re: what pump to use for vacuum bagging

Postby pdkite » Sun Apr 04, 2010 1:14 am

turn it on, put a hand on one of the tubes.

if you feel it sucking air in, that's prolly the sucking end. if its blowing air out, that's prolly the blowing end.

google like, "convert fridge pump for vacuum bagging" or something.

i just used this ghetto setup, worked for me
DSC06665.JPG


don't forget to post pics of the build/finished board here! always nice to see

happy building

User avatar
Kamikuza
Very Frequent Poster
Posts: 4580
Joined: Fri Jan 09, 2009 4:49 am
Local Beach: Sabae Beach
Favorite Beaches: Ol' Stinky
Gear: This, that, the other

Re: what pump to use for vacuum bagging

Postby Kamikuza » Sun Apr 04, 2010 3:18 am

My LEI's pump has an in and an out hole to plug the tubing into ... but then you'd have to do it by hand!

EDIT : oh now I see this is in the board builders thread ... I thought maybe you were trying to pack it down for travel or something :D sorry!

FredBGG
Very Frequent Poster
Posts: 3361
Joined: Tue May 24, 2005 3:38 am
Kiting since: 0
Brand Affiliation: None
Location: Malibu

Re: what pump to use for vacuum bagging

Postby FredBGG » Sun Apr 04, 2010 8:07 am

Don't underestimate the value of a good pump.

First of all you need the vacume pump to run as long as 8 hours at a time.
If your pump fails you can end up throwind out a bunch of expensive material.

Second ... most low end vacuume pumps produce oil vapour and if that vapor gets on your building materials in the area you are working the material will be useless.
This oil vapor is also highly unheathy.

You also want a fast pump as the quicker you can crate the vacumm the better especially if you have had a glitch durring the layup.

I use very high end medical grade vaccume pumps that are two stage.
Mine retails at $ 5,000. However you can get these extreamey cheap on the used mediacal surplus market.

It is dead quiet, procudes absolutely no vapour, does not overheat. It also has a very very good.

Cheers

Fred

frankm1960
Very Frequent Poster
Posts: 1230
Joined: Sun Feb 04, 2007 10:48 pm
Kiting since: 2007
Local Beach: -Bayshore, at the end sea st. on saint John's west side, bay of fundy.
-Saints rest beach, at the end of sandy point road, irving nature park, saint john, west side.
Gear: Kites: 12m LF Mig, 9m LF Mig, 5m SS Fuel
Boards: LF proof 151cm, Real Wind 144cm, home made light wind board 160 x 50
Brand Affiliation: None

Re: what pump to use for vacuum bagging

Postby frankm1960 » Mon Apr 05, 2010 1:20 am


jaros
Frequent Poster
Posts: 306
Joined: Sun Dec 15, 2002 1:00 am
Kiting since: 0
Brand Affiliation: None
Location: Slovenia

Re: what pump to use for vacuum bagging

Postby jaros » Wed Apr 07, 2010 8:44 am

I am using fridge pump with great resaults and have build many boards with the same pump. Sometimes when it is a bit cold the pump was on for more than 24 hours without any problem. It produces mor than 0,8 negative pressure. Until now it has not let my down. :D
My fridge compressor has 4 tubes. Two are sucking the air in and two are blowing the air out. You must use both "intake" tubes.
The oil from the compressor is not the problem, since if a drop comes out, it comes out trough "blowing" hole and newer from the "intake" hole.
The vapor is also not a problem. When working with epoxy anyway it is best to work outside or in a good ventilated room and allways use the mask with fiters for organic matter.

I am sure a 5000$ pump works better, though.... :oops:
Greetings,
Jaros

User avatar
zob
Frequent Poster
Posts: 421
Joined: Tue Feb 24, 2009 1:43 pm
Kiting since: 2006
Local Beach: Grado Pineta (IT), Fossalon (IT)
Style: Freeride, strapless hooked-in
Gear: FS S3 19m2 DLX
FS S3 CE 12m2 DLX
FS S4 8m2 DLX

Homemmade Alaias, TTs and wake skate, Naish Mutant 5´5½
MBS Pro90
Aboards Reverse 161 cm
Homemade POW SB 166 x 32,5 cm
Flow NX2 SE
Location: Iv.G.-Slovenia
Contact:

Re: what pump to use for vacuum bagging

Postby zob » Wed Apr 07, 2010 3:07 pm

Does a fridge compresor have to run non stop? Does it lose vacuum if you turn it off?
Do you have a membrane instaled like in the upper links?...

jaros
Frequent Poster
Posts: 306
Joined: Sun Dec 15, 2002 1:00 am
Kiting since: 0
Brand Affiliation: None
Location: Slovenia

Re: what pump to use for vacuum bagging

Postby jaros » Wed Apr 07, 2010 6:26 pm

Hi,
It is the best if you make the switch which turns off the comperssor when the desired negative pressure is reached and turns it back on when the pressure rises again, like in the upper links. But I am to lazy to do that. I keep the compessor operating the whole time. I am making wood core boards only, so there is no worry to press the core to much.
Greetings,
Jaros

lawless
Rare Poster
Posts: 30
Joined: Wed Dec 31, 2008 8:33 pm
Kiting since: 2007
Local Beach: Central Florida
Brand Affiliation: None

Re: what pump to use for vacuum bagging

Postby lawless » Sat Apr 10, 2010 5:35 am

All these graphics relate to DIY fridge pump vacuum setups:

vacpump.jpg
vacpump.jpg (63.38 KiB) Viewed 1481 times


vacuumpumpsetup.jpg
vacuumpumpsetup.jpg (10.42 KiB) Viewed 1481 times


vacdia.gif
vacdia.gif (4.3 KiB) Viewed 1481 times

User avatar
zob
Frequent Poster
Posts: 421
Joined: Tue Feb 24, 2009 1:43 pm
Kiting since: 2006
Local Beach: Grado Pineta (IT), Fossalon (IT)
Style: Freeride, strapless hooked-in
Gear: FS S3 19m2 DLX
FS S3 CE 12m2 DLX
FS S4 8m2 DLX

Homemmade Alaias, TTs and wake skate, Naish Mutant 5´5½
MBS Pro90
Aboards Reverse 161 cm
Homemade POW SB 166 x 32,5 cm
Flow NX2 SE
Location: Iv.G.-Slovenia
Contact:

Re: what pump to use for vacuum bagging

Postby zob » Sat Apr 10, 2010 9:26 pm

tnx lawless!

where can I find this vacuum switch (what kind of shop?), what is it used for?


Return to “Board Builders”

Who is online

Users browsing this forum: No registered users and 3 guests