Lee Valley Vacuum Press

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Forum topic by Dunelm posted 04-28-2014 06:16 PM 1044 views 0 times favorited 6 replies Add to Favorites Watch
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28 posts in 1910 days

04-28-2014 06:16 PM

Topic tags/keywords: vacuum press lee valley

I’m wondering if anyone has comments on Lee Valley’s vacuum press—a clear plastic bag with a plastic hand pump for creating the vacuum. I’ve seen it at Lee Valley but am wondering about how well the plastic pump works over the years.

-- Bruce -- Canada

6 replies so far

View Loren's profile


8168 posts in 3071 days

#1 posted 04-28-2014 06:23 PM

I’m sure it works fine.

The issue with vacuum pressing is the bags develop leaks
in use. A hand pump cannot compensate for that the
way a running pump can.

You can buy a use GAST pump on ebay for around $50.

The venturi air compressor method is fine, but a vacuum
pump is much quieter. Pressing can take several hours
as the low level of air exposure in the seems to slow
the glue drying.

If you don’t mind babysitting your vaccum bag, perhaps
a hand pump is fine, but it seems likely to me you’d
outgrow it quickly.

View woodchuckerNJ's profile


1140 posts in 1057 days

#2 posted 04-28-2014 10:28 PM

go for the gast pump.
I have a 2 stage gast medical grade pump.

it is quiet like Loren said. Not only that but when using epoxy it’s the only way to go.

-- Jeff NJ

View Woodendeavor's profile


276 posts in 2029 days

#3 posted 04-29-2014 12:20 AM

I have the system you are looking at. Bought it from Roarockit o few years ago as an inexpensive way to try vacuum bag forming. It works well but if you are going to be doing allot of bag work use a pump system

View Dunelm's profile


28 posts in 1910 days

#4 posted 04-29-2014 09:06 PM

Thank you all for your comments. When using a pump, are there issues around the type/manufacturer of the bag and how the line from the pump connects to the bag?

-- Bruce -- Canada

View HorizontalMike's profile


7064 posts in 2337 days

#5 posted 04-29-2014 09:10 PM

I regret having sold my Gast pump several years ago, when getting out of the hobby of building vacuum bagged sailplane wings… 8-(

-- HorizontalMike -- "Woodpeckers understand..."

View Loren's profile


8168 posts in 3071 days

#6 posted 04-29-2014 09:15 PM

I got fittings from Joe Woodworker. I got the material to make
my own bag from him too, but since then he’s gotten into
making bags. I suggest you take a look at his product line.

He sells pumps too, but if you look around you can find
a used one a lot cheaper.

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