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Forum topic by Arthouse posted 04-29-2013 03:27 PM 787 views 1 time favorited 7 replies Add to Favorites Watch
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Arthouse

227 posts in 1302 days


04-29-2013 03:27 PM

I want to start a new line of furniture using bentwood with pressed veneer using a vacuum press. I seen utube videos but want some feedback on where to direct my energy to start either buying a system or making my own . I need professional I will be using all the time.

-- "The hand is the cutting edge of the mind but the wind and sun are the healing factors of the heart


7 replies so far

View Dallas's profile

Dallas

2904 posts in 1139 days


#1 posted 04-29-2013 03:51 PM

I have an old air bed mattress that I cut down into a bag I could use and seal.

I vacuum it down with 2 old refrigerator compressors.

It’s not very large, only about 2’X3’ usable space but I can achieve a strong 19-20” vacuum with it.

If I were going to go any larger I would get an air conditioning compressor from an old bus and run it from a set of pulleys and an electric motor.

-- Improvise.... Adapt...... Overcome!

View Fred Hargis's profile

Fred Hargis

1785 posts in 1145 days


#2 posted 04-29-2013 04:02 PM

The pumps that Joe Woodworker sells are very well made continuous duty pumps, I can’t imagine you would wear one out easily. Besides, the rebuilt ones are cheap enough to have a spare on hand. The only question I would have is whether they will evacuate the bag quickly enough for a commercial operation. That said, whether you build or buy, just make sure you get the heavier polyurethane bags. They are some much easier to deal with that the extra cost is worth it, especially in a commercial operation.

-- Our village hasn't lost it's idiot, we sent 'em to Washington.

View shipwright's profile

shipwright

4958 posts in 1450 days


#3 posted 04-29-2013 04:07 PM

See this review.

-- Paul M ..............If God wanted us to have fiberglass boats he would have given us fiberglass trees. http://prmdesigns.com/

View Lee Barker's profile

Lee Barker

2163 posts in 1502 days


#4 posted 04-29-2013 04:25 PM

I have a Mercury Vacuum Press setup which I purchased in 1999. 4×8 30 mil mag and pump (which works off my compressor) was $609 then, plus $18 shipping.

It has functioned usefully and dependably these 14 years, though sometimes a few months might pass between tasks.

You don’t need to use all the bag—just roll up the unused part and it sits there.

It appears, from a Google search and an attempted call, this company is no longer in business.

The best news, dead on to your question, is Gene’s coincidental post here.

Kindly,

Lee

-- "...in his brain, which is as dry as the remainder biscuit after a voyage, he hath strange places cramm'd with observation, the which he vents in mangled forms." --Shakespeare, "As You Like It"

View scotsman9's profile

scotsman9

134 posts in 541 days


#5 posted 04-29-2013 04:46 PM

Watch this guy. He uses a vacuum press a lot and he is very very talented and informative.
http://www.youtube.com/user/AndyPitts1000/videos?view=0
A few of his projects he explains his system and how he built it.

-- Just a man and his opinion.

View Loren's profile (online now)

Loren

7545 posts in 2300 days


#6 posted 04-29-2013 04:55 PM

You might want to look into using an frame vacuum press
instead of a bag. With a bag, if the piece is curved and
not small, you almost have to crawl into the bag to
line parts up. There’s glue to clean up as well.

I use a bookbinding press to make some curved parts –
I have to make a 2-part form which is a pain, but once
that’s done, making a curved part takes just a couple
of minutes to spread the glue and stick it in the press.
An old case or drawer clamp would work just as well.

-- http://lawoodworking.com

View HorizontalMike's profile

HorizontalMike

6938 posts in 1566 days


#7 posted 04-29-2013 05:17 PM

When I used to vacuum bag wood veneer onto complex foam core RC sailplane airfoils I used West Systems epoxy. I used only 8-9in of vacuum in order to not crush the foam. I never had a de-lamination in flight and I know there were times I was pulling 10-15gs or greater with some inflight maneuvers. That said, what is the case for pulling 19-20in of vacuum? That just sounds like asking for trouble, undue crushing/stress, but that is just my opinion.

FWIW, I also used an old empty R12 refridgerant canister as a vacuum reservoir to speed up the initial vacuum process and to minimize the fluctuation of the vacuum until the epoxy set.

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

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