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Forum topic by MrRon posted 06-25-2013 06:08 PM 594 views 0 times favorited 7 replies Add to Favorites Watch
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MrRon

2985 posts in 1994 days


06-25-2013 06:08 PM

Topic tags/keywords: spray gun

Has anyone thought about using a common household vacuum cleaner as an HVLP sprayer? Vacuum cleaners seem to be able to supply a large volume of air. I remember years ago, vacuum cleaners came with a sprayer attachment that worked on the syphon principal.


7 replies so far

View Earlextech's profile

Earlextech

1024 posts in 1441 days


#1 posted 06-25-2013 06:13 PM

Yes MrRon – everyone has.

-- Sam Hamory - The project is never finished until its "finished"!

View Tennessee's profile

Tennessee

1565 posts in 1265 days


#2 posted 06-25-2013 06:16 PM

The problem is air is compressible, and a vacuum cleaner exhaust is lousy at compression. It uses non-positive fans to develop the air movement, so slippage is inevitable and unwanted.

-- Paul, Tennessee, http://www.tsunamiguitars.com

View crank49's profile

crank49

3524 posts in 1722 days


#3 posted 06-25-2013 06:46 PM

All of the “HVLP” sprayers on the market that I am aware of use fans to develop pressure and hence, air flow.
Well, all but the ones that connect to a regulated and diluted compressed air line.

I have worked with equipment that can develop 7 psi pressure with a fan and using multiple stages you can develop thousands of pounds of force with fans.

But, I have wondered the same thing about the old “Electrolux” paint sprayers. I think I even posted the same question on here a couple years ago.

-- Michael :-{| “If you tell a big enough lie and tell it frequently enough, it will be believed.” ― A H

View pintodeluxe's profile

pintodeluxe

3564 posts in 1564 days


#4 posted 06-25-2013 07:00 PM

Whaaaaa?

-- Willie, Washington "If You Choose Not To Decide, You Still Have Made a Choice" - Rush

View OggieOglethorpe's profile

OggieOglethorpe

907 posts in 861 days


#5 posted 06-25-2013 07:14 PM

Mr. Ron,

Earlex is being funny… HVLP Turbines ARE vacuum motors. One of the most famous OEM’s is Ametek...

View Bill Davis's profile

Bill Davis

226 posts in 2675 days


#6 posted 06-25-2013 09:28 PM

Years ago, don’t remember exactly when, there was a DIY HVAC article in Fine Woodworking mag using a vac motor similar to one of these motors from Grainger.( http://www.grainger.com/Grainger/vacuum-motors/definite-purpose-ac-motors/motors/ecatalog/N-lrw)

So it is not a far fetched idea and if I were ever tempted to go HVLP that’s how I would do it.. In fact here is a reprint.

http://books.google.com/books?id=OoLmzPO-rikC&pg=PA70&lpg=PA70&dq=build+your+own+HVLP+fine+woodworking&source=bl&ots=LI8MDpw3xB&sig=V1sYNzCcOUsIjnDIwfNTmibOJiI&hl=en&sa=X&ei=0ArKUfGOGcqAygHokoHYAw&ved=0CG8Q6AEwCA#v=onepage&q=build%20your%20own%20HVLP%20fine%20woodworking&f=false

View dhazelton's profile

dhazelton

1277 posts in 1047 days


#7 posted 06-25-2013 11:36 PM

I have a folder with a copy of that Fine Woodworking article because I was going to build one once upon a time. But that was when HVLPs were a small fortune. They are relatively cheap now and it probably is only worth it if you want to experiment and already have the vacuum motor and a gun. But do it – I’ve always wondered how it would work.

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