Tiny vacuum pump

[Jim Weir]

Does anybody have an idea on how to make a tiny little vacuum pump on the order
of an aquarium pump or so that will draw just a few inches of water? Preferably
110, but I can rig up a 12 volt supply if necessary.

The reason I say this is that I'm getting ready to pack a fairly large number of
bags with used but serviceable engine parts (valves, pistons, etc.) and I'd like
to put each part in a "baggie" (sandwich bag or equivalent) along with a little
preservative oil, and then suck the baggie down with a football needle stuck
into the top closing mechanism just before sealing.

Thoughts?

Jim
Jim Weir (A&P/IA, CFI, & other good alphabet soup)
VP Eng RST Pres. Cyberchapter EAA Tech. Counselor
http://www.rst-engr.com

[[email protected]]

In rec.aviation.owning Jim Weir > wrote:
> Does anybody have an idea on how to make a tiny little vacuum pump on the order
> of an aquarium pump or so that will draw just a few inches of water? Preferably
> 110, but I can rig up a 12 volt supply if necessary.

> The reason I say this is that I'm getting ready to pack a fairly large number of
> bags with used but serviceable engine parts (valves, pistons, etc.) and I'd like
> to put each part in a "baggie" (sandwich bag or equivalent) along with a little
> preservative oil, and then suck the baggie down with a football needle stuck
> into the top closing mechanism just before sealing.

> Thoughts?

> Jim
> Jim Weir (A&P/IA, CFI, & other good alphabet soup)
> VP Eng RST Pres. Cyberchapter EAA Tech. Counselor
> http://www.rst-engr.com

If it is just the suck that has to be tiny and not the pump, how about
a toilet paper roll and some duct tape to make an adapter to your shop
vac?

--
Jim Pennino

Remove -spam-sux to reply.

[Ron Natalie]

"Jim Weir" > wrote in message ...
> Does anybody have an idea on how to make a tiny little vacuum pump on the order
> of an aquarium pump or so that will draw just a few inches of water? Preferably
> 110, but I can rig up a 12 volt supply if necessary.

Why don't you just get a foodsaver? (www.foodsaver.com). It will do the
vacuum pack as well as sealing the bag (and you can make arbitrary sized bag
as long as it's narrower than the roll of "bag stock." I've got one in the kitchen.

If that's too pricey for you, then there's always this one $14.94, not sold in stores....

http://www.pump-n-seal.com/

[Ben Jackson]

In article >,
Jim Weir > wrote:
>Does anybody have an idea on how to make a tiny little vacuum pump

You just need a surplus dental spit sucker. Perfect for removing air
from the corner of a plastic bag. ;)

--
Ben Jackson
>
http://www.ben.com/

[Jim Weir]

Because the pump has to fit on a bench that is already overcrowded. If I was
going to use a shopvac, btw, it would be with a pvc waterpipe fitting glued to a
barbed fitting with plastic tubing. I thought of that and then the hassle for
each part of reaching down to turn the vacuum on for each part you want to seal.

Jim





shared these priceless pearls of wisdom:

->If it is just the suck that has to be tiny and not the pump, how about
->a toilet paper roll and some duct tape to make an adapter to your shop
->vac?

Jim Weir (A&P/IA, CFI, & other good alphabet soup)
VP Eng RST Pres. Cyberchapter EAA Tech. Counselor
http://www.rst-engr.com

[Jim Weir]

Because Foodsaver requires you to use their special bags. Besides being WAY
overpriced, the bags ain't cheap either. Yeah I knew about pump'n'seal, but
that seems to be a kluge way of doing it. I was looking for elegant.

Jim


"Ron Natalie" >
shared these priceless pearls of wisdom:

->
->Why don't you just get a foodsaver? (www.foodsaver.com). It will do the
->vacuum pack as well as sealing the bag (and you can make arbitrary sized bag
->as long as it's narrower than the roll of "bag stock." I've got one in the
kitchen.
->
->If that's too pricey for you, then there's always this one $14.94, not sold in
stores....
->
->http://www.pump-n-seal.com/

Jim Weir (A&P/IA, CFI, & other good alphabet soup)
VP Eng RST Pres. Cyberchapter EAA Tech. Counselor
http://www.rst-engr.com

[John Mireley]

Jim Weir wrote:

> Does anybody have an idea on how to make a tiny little vacuum pump on the order
> of an aquarium pump or so that will draw just a few inches of water? Preferably
> 110, but I can rig up a 12 volt supply if necessary.
>


If you have a compressor, use a venturi vacuum generator.
Harbor freight has them for about $10 from time to time.

[mikem]

Jim Weir wrote:
> Does anybody have an idea on how to make a tiny little vacuum pump on the order
> of an aquarium pump or so that will draw just a few inches of water? Preferably
> 110, but I can rig up a 12 volt supply if necessary.
>
> The reason I say this is that I'm getting ready to pack a fairly large number of
> bags with used but serviceable engine parts (valves, pistons, etc.) and I'd like
> to put each part in a "baggie" (sandwich bag or equivalent) along with a little
> preservative oil, and then suck the baggie down with a football needle stuck
> into the top closing mechanism just before sealing.
>
> Thoughts?
>
> Jim
> Jim Weir (A&P/IA, CFI, & other good alphabet soup)
> VP Eng RST Pres. Cyberchapter EAA Tech. Counselor
> http://www.rst-engr.com

My wife bought a vacuum bagging freezer food storage system. It sucks
down the bag containing the food, and then heat seals the edge of the
bag. I have used it to seal electronic parts into bags. Should work fine
with a little preservative oil on mechanical parts.

MikeM

[Jim Weir]

PERFECT. Where do I find one? Are there boneyards for dental equipment?

Jim


(Ben Jackson)
shared these priceless pearls of wisdom:

->In article >,
->Jim Weir > wrote:
->>Does anybody have an idea on how to make a tiny little vacuum pump
->
->You just need a surplus dental spit sucker. Perfect for removing air
->from the corner of a plastic bag. ;)

Jim Weir (A&P/IA, CFI, & other good alphabet soup)
VP Eng RST Pres. Cyberchapter EAA Tech. Counselor
http://www.rst-engr.com

[Gig Giacona]

How many are you doing? A drinking straw and your lungs will do a bang up
job with a zip-lock bag



"Jim Weir" > wrote in message
...
> Does anybody have an idea on how to make a tiny little vacuum pump on the
order
> of an aquarium pump or so that will draw just a few inches of water?
Preferably
> 110, but I can rig up a 12 volt supply if necessary.
>
> The reason I say this is that I'm getting ready to pack a fairly large
number of
> bags with used but serviceable engine parts (valves, pistons, etc.) and
I'd like
> to put each part in a "baggie" (sandwich bag or equivalent) along with a
little
> preservative oil, and then suck the baggie down with a football needle
stuck
> into the top closing mechanism just before sealing.
>
> Thoughts?
>
> Jim
> Jim Weir (A&P/IA, CFI, & other good alphabet soup)
> VP Eng RST Pres. Cyberchapter EAA Tech. Counselor
> http://www.rst-engr.com

[Ron Natalie]

"G.R. Patterson III" > wrote in message ...
>
>
> Jim Weir wrote:
> >
> > Does anybody have an idea on how to make a tiny little vacuum pump on the order
> > of an aquarium pump or so that will draw just a few inches of water? Preferably
> > 110, but I can rig up a 12 volt supply if necessary.
>
> Go to http://www.sportsmansguide.com and enter item number WX2-70392 in the
> search window. You should see a window for a air mattress pump that runs on four
> D-cells. It has three inflator fittings which are attached to a lanyard.

I found a similar device at the WAL*MART made by Coleman. It has a internal
rechargeable battery.

[Jim Weir]

That's how I seal food bags for freezing. Tellya what, put a little light
machine oil in a bag and try sealing it with a straw. Damn near choked me to
death.

Jim


"Gig Giacona" >
shared these priceless pearls of wisdom:

->How many are you doing? A drinking straw and your lungs will do a bang up
->job with a zip-lock bag


Jim Weir (A&P/IA, CFI, & other good alphabet soup)
VP Eng RST Pres. Cyberchapter EAA Tech. Counselor
http://www.rst-engr.com

[Gig Giacona]

Sealing food bags is where I came up with the idea. I did that until my wife
reached her tolerance level and went out and bought one of the vac/sealer
thingies.


"Jim Weir" > wrote in message
...
> That's how I seal food bags for freezing. Tellya what, put a little light
> machine oil in a bag and try sealing it with a straw. Damn near choked me
to
> death.
>
> Jim
>
>
> "Gig Giacona" >
> shared these priceless pearls of wisdom:
>
> ->How many are you doing? A drinking straw and your lungs will do a bang
up
> ->job with a zip-lock bag
>
>
> Jim Weir (A&P/IA, CFI, & other good alphabet soup)
> VP Eng RST Pres. Cyberchapter EAA Tech. Counselor
> http://www.rst-engr.com

[G.R. Patterson III]

Jim Weir wrote:
>
> Does anybody have an idea on how to make a tiny little vacuum pump on the order
> of an aquarium pump or so that will draw just a few inches of water? Preferably
> 110, but I can rig up a 12 volt supply if necessary.

Go to http://www.sportsmansguide.com and enter item number WX2-70392 in the
search window. You should see a window for a air mattress pump that runs on four
D-cells. It has three inflator fittings which are attached to a lanyard.

I have one of these pumps. The fittings will fit on either the air intake or the
outflow; the idea is that you can use the pump to deflate your mattress when you're
ready to leave Oshkosh. It should work very well for your project, and the price
is right.

George Patterson
Great discoveries are not announced with "Eureka!". What's usually said is
"Hummmmm... That's interesting...."

[Rich S.]

"Jim Weir" > wrote in message
...
> That's how I seal food bags for freezing. Tellya what, put a little light
> machine oil in a bag and try sealing it with a straw. Damn near choked me
to
> death.

When I bag salmon for the freezer, I fill the small kitchen sink with water,
then submerge the bag in the water up to the lip. A quick zip and the bag is
closed. Not a big enough bubble left for a compass. You could use a
Tupperware container instead of the sink.

Rich S.

[Blueskies]

The foodsaver thing we have has a fitting for a small hose that you can hook up to whatever you want - would be just
right for what you are doing...

--
Dan D.



..
"Jim Weir" > wrote in message ...
> Because Foodsaver requires you to use their special bags. Besides being WAY
> overpriced, the bags ain't cheap either. Yeah I knew about pump'n'seal, but
> that seems to be a kluge way of doing it. I was looking for elegant.
>
> Jim
>
>
> "Ron Natalie" >
> shared these priceless pearls of wisdom:
>
> ->
> ->Why don't you just get a foodsaver? (www.foodsaver.com). It will do the
> ->vacuum pack as well as sealing the bag (and you can make arbitrary sized bag
> ->as long as it's narrower than the roll of "bag stock." I've got one in the
> kitchen.
> ->
> ->If that's too pricey for you, then there's always this one $14.94, not sold in
> stores....
> ->
> ->http://www.pump-n-seal.com/
>
> Jim Weir (A&P/IA, CFI, & other good alphabet soup)
> VP Eng RST Pres. Cyberchapter EAA Tech. Counselor
> http://www.rst-engr.com

[Holger Stephan]

Anybody mentioned a refrigerator compressor? I used it to vacuum bagging
composites. You shouldn't drain the fluid from a filled system (ozon
killer) but if you get one from a bone yard that is already drained it
would make a low noise, low cost solution.

- Holger

Jim Weir wrote:

> Does anybody have an idea on how to make a tiny little vacuum pump on the
> order
> of an aquarium pump or so that will draw just a few inches of water?
> Preferably 110, but I can rig up a 12 volt supply if necessary.
> ...

[David Pincus]

> Does anybody have an idea on how to make a tiny little vacuum pump on the order
> of an aquarium pump or so that will draw just a few inches of water? Preferably
> 110, but I can rig up a 12 volt supply if necessary.
>
> The reason I say this is that I'm getting ready to pack a fairly large number of
> bags with used but serviceable engine parts (valves, pistons, etc.) and I'd like
> to put each part in a "baggie" (sandwich bag or equivalent) along with a little
> preservative oil, and then suck the baggie down with a football needle stuck
> into the top closing mechanism just before sealing.
>
> Thoughts?
>
>Jim Weir


> ->Ben Jackson wrote:
> ->You just need a surplus dental spit sucker. Perfect for removing air
> ->from the corner of a plastic bag. ;)


> PERFECT. Where do I find one? Are there boneyards for dental equipment?
>
> Jim


Jim,

What you want is a Gomco. They make most all the dental/medical suction
equipment. Any of them will consist of the vacuum pump and a glass bell
jar to pull the fluid into. We used these in our portable dental clinics
in the Army.

I did a quick search on Google for "gomco suction used" and the first
hit was for a used machine for $109:
http://websites.medmatrix.com/detail.CFM?LineItemID=630.
The whole list is at:

http://www.google.com/search?hl=en&lr=&ie=ISO-8859-1&q=gomco+suction+used

There is another solution to your problem. You said it yourself,
baggies, but not the old kind. They make new ones with a plastic zipper
and they seal absolutely air and water tight, and you can get them in
any size up to 3 ft in size, what are called "game bags" for deer meat,
etc. for your larger engine parts.

With whatever size you put in your part, as much preservative oil as you
want, seal it up, shake the bag to coat the part, then vent the zipper a
bit and flatten the bag out as much as possible and zip the last bit
shut. What little oxygen is in there shouldn't harm your oil-coated
parts. If you really want to got all the O2 out, rent a tank of CO2 or
Nitrogen and crack the valve just enough to blow low-pressure gas into
the bag as you seal it to drive out any room air. Then whatever air is
left inside is inert.

Regards,


David Pincus, DDS
Major, USAR (RET)

[Mark Mallory]

mikem wrote:
>
>
> My wife bought a vacuum bagging freezer food storage system. It sucks


Mike: ask Ron Jones about how we made a vacuum pump out of an old Briggs and
Stratton lawnmower engine (we were trying to make our own freeze-dried food...)

Probably not the most time/cost-effective solution, but we sure had fun!

Mark/C182L

[B]

Take the brake system vacuum pump from the back of the alternator on almost
any diesel light truck, 4wd, etc. For the level you are looking for you
could probably hand crank it with a lawn mower zip starter and use it's
return spring to set it for the next pull.

Depends on how green you want to be, you're both recycling and people
powering it!
;<)
Bushy

[Tom Pappano]

Jim Weir wrote:
> Does anybody have an idea on how to make a tiny little vacuum pump on the order
> of an aquarium pump or so that will draw just a few inches of water? Preferably
> 110, but I can rig up a 12 volt supply if necessary.
>
> The reason I say this is that I'm getting ready to pack a fairly large number of
> bags with used but serviceable engine parts (valves, pistons, etc.) and I'd like
> to put each part in a "baggie" (sandwich bag or equivalent) along with a little
> preservative oil, and then suck the baggie down with a football needle stuck
> into the top closing mechanism just before sealing.
>
> Thoughts?
>
> Jim
> Jim Weir (A&P/IA, CFI, & other good alphabet soup)
> VP Eng RST Pres. Cyberchapter EAA Tech. Counselor
> http://www.rst-engr.com


If you have compressed air already available, there are small venturi
vacuum generators you can use. They are just a tiny chunk of
aluminum with three 1/8" pipe threaded ports, air in, air out,
and vacuum. The one in my "solder sucker" pulls about a
26" vacuum and damn quick too! A "baggie" would be evacuated
almost instantly.

Tom Pappano, PP-ASEL-IA

[Phil Sisson, Litchfield Aerobatic Club]

Try using warm oil, not hot enough to melt through, roll the air out of
the baggie, seal it and as the oil cools, maybe it will pull it own
vaccuum...

[James R. Freeman]

Jimmy:
Use an old compressor from a freg. I have a high dollar Freon pump but
use the old G.M. compressor more.
Jim
"Jim Weir" > wrote in message
...
> Does anybody have an idea on how to make a tiny little vacuum pump on the
order
> of an aquarium pump or so that will draw just a few inches of water?
Preferably
> 110, but I can rig up a 12 volt supply if necessary.
>
> The reason I say this is that I'm getting ready to pack a fairly large
number of
> bags with used but serviceable engine parts (valves, pistons, etc.) and
I'd like
> to put each part in a "baggie" (sandwich bag or equivalent) along with a
little
> preservative oil, and then suck the baggie down with a football needle
stuck
> into the top closing mechanism just before sealing.
>
> Thoughts?
>
> Jim
> Jim Weir (A&P/IA, CFI, & other good alphabet soup)
> VP Eng RST Pres. Cyberchapter EAA Tech. Counselor
> http://www.rst-engr.com

[Hooter141]

Try this: Put parts in bag, slowly lower bag into bucket of water until only
the top inch or so is above water (Don't get any water in the bag!) Zip bag
closed while most of bag is under water. Remove. The water pressure should
have forced 99% of the air out and you have a psuedo "sealed" part.>> The
reason I say this is that I'm getting ready to pack a fairly large
>number of
>> bags with used but serviceable engine parts (valves, pistons, etc.) and
>I'd like
>> to put each part in a "baggie" (sandwich bag or equivalent) along with a
>little
>> preservative oil, and then suck the baggie down with a football needle
>stuck
>> into the top closing mechanism just before sealing.
>>
>> Thoughts?
>>
>> Jim
>> Jim Weir (A&P/IA, CFI, & other good alphabet soup)
>> VP Eng RST Pres. Cyberchapter EAA Tech. Counselor
>> http://www.rst-engr.com
>

[[email protected]]

In rec.aviation.owning Mark Mallory > wrote:
: Mike: ask Ron Jones about how we made a vacuum pump out of an old Briggs and
: Stratton lawnmower engine (we were trying to make our own freeze-dried food...)

: Probably not the most time/cost-effective solution, but we sure had fun!

: Mark/C182L

Probably like my dad's 1939 Oliver 60 tractor. It has a stopcock
on the intake manifold for milking one cow at a time if the electricity
went out. Probably too big to fit on your desk though... :)

-Cory

--
************************************************** ***********************
* The prime directive of Linux: *
* - learn what you don't know, *
* - teach what you do. *
* (Just my 20 USm$) *
************************************************** ***********************

[[email protected]]

In rec.aviation.owning Jim Weir > wrote:
: Does anybody have an idea on how to make a tiny little vacuum pump on the order
: of an aquarium pump or so that will draw just a few inches of water? Preferably
: 110, but I can rig up a 12 volt supply if necessary.

I've actually got one of these at home. I found it from a pile of
surplus equipment. It doesn't pull much vacuum, but it basically is an
aquarium pump. I'll try to find a model number on it and report back.

-Cory

************************************************** ***********************
* The prime directive of Linux: * * - learn what you don't know, * * -
teach what you do. * * (Just my 20 USm$) *
************************************************** ***********************

[Jerry Wass]

Jim, Get a grip on yourself--or better ,one of those little , or medium size rubber
bulb blower thingies, (they have a one way check valve in each end) or even a plastic
gas-syphon hose bulb---THINK OF THE ELECTRICITY YOU WILL SAVE, ---jERRY

wrote:

> In rec.aviation.owning Jim Weir > wrote:
> : Does anybody have an idea on how to make a tiny little vacuum pump on the order
> : of an aquarium pump or so that will draw just a few inches of water? Preferably
> : 110, but I can rig up a 12 volt supply if necessary.
>
> I've actually got one of these at home. I found it from a pile of
> surplus equipment. It doesn't pull much vacuum, but it basically is an
> aquarium pump. I'll try to find a model number on it and report back.
>
> -Cory
>
> ************************************************** ***********************
> * The prime directive of Linux: * * - learn what you don't know, * * -
> teach what you do. * * (Just my 20 USm$) *
> ************************************************** ***********************

[Mark Mallory]

wrote:
>
> In rec.aviation.owning Mark Mallory > wrote:
> : Briggs and
> : Stratton lawnmower engine (we were trying to make our own freeze-dried
> : food...)
>
> Probably like my dad's 1939 Oliver 60 tractor. It has a stopcock
> on the intake manifold for milking one cow at a time if the electricity
> went out. Probably too big to fit on your desk though... :)

In our case, we figured that for our purpose we needed a pretty high vacuum -
like 1/200 atm or so (below the triple point of water.) Because the pressure
depends on the compression ratio, the original Briggs & Stratton cylinder head
wouldn't work; we replaced it with our own cylinder head made from 3/8" aluminum
plate, with "flapper valves" made from an old inner tube (this gave a
near-infinite compression ratio.) We installed a 7 inch pulley on the
crankshaft and turned the B&S with an electric motor.

We were able to inflate balloons in a mason jar with the thing, but that was
about it. I seem to remember we tried freeze-drying some banana slices, but the
results weren't too impressive.

[Blueskies]

Take one of these apart:

http://www.ballsonline.com/details.asp?prodid=10203&cat=136&path=136

then reverse the little flapper valve to make it suck instead of blow...

--
Dan D.



..
"Jim Weir" > wrote in message ...
> Does anybody have an idea on how to make a tiny little vacuum pump on the order
> of an aquarium pump or so that will draw just a few inches of water? Preferably
> 110, but I can rig up a 12 volt supply if necessary.
>
> The reason I say this is that I'm getting ready to pack a fairly large number of
> bags with used but serviceable engine parts (valves, pistons, etc.) and I'd like
> to put each part in a "baggie" (sandwich bag or equivalent) along with a little
> preservative oil, and then suck the baggie down with a football needle stuck
> into the top closing mechanism just before sealing.
>
> Thoughts?
>
> Jim
> Jim Weir (A&P/IA, CFI, & other good alphabet soup)
> VP Eng RST Pres. Cyberchapter EAA Tech. Counselor
> http://www.rst-engr.com

[Mike Patterson]

On Sat, 17 Jan 2004 19:03:40 GMT, Tom Pappano >
wrote:

>Jim Weir wrote:
>> Does anybody have an idea on how to make a tiny little vacuum pump on the order
>> of an aquarium pump or so that will draw just a few inches of water? Preferably
>> 110, but I can rig up a 12 volt supply if necessary.
>>
>> The reason I say this is that I'm getting ready to pack a fairly large number of
>> bags with used but serviceable engine parts (valves, pistons, etc.) and I'd like
>> to put each part in a "baggie" (sandwich bag or equivalent) along with a little
>> preservative oil, and then suck the baggie down with a football needle stuck
>> into the top closing mechanism just before sealing.
>>
>> Thoughts?
>>
>> Jim
>> Jim Weir (A&P/IA, CFI, & other good alphabet soup)
>> VP Eng RST Pres. Cyberchapter EAA Tech. Counselor
>> http://www.rst-engr.com


Those aquarium air pumps pull air from around the case.

How about placing one inside a cheapo tupperware-type container with a
"suck" port mounted on the container, you'd also need to run a "blow"
port from the pump's normal output through the container wall.

HTH


Mike Patterson
Please remove the spamtrap to email me.

[Jim Weir]

Now *that's* clever. I admire clever.

Jim



Mike Patterson >
shared these priceless pearls of wisdom:


->
->Those aquarium air pumps pull air from around the case.
->
->How about placing one inside a cheapo tupperware-type container with a
->"suck" port mounted on the container, you'd also need to run a "blow"
->port from the pump's normal output through the container wall.
->
->HTH
->
->
->Mike Patterson
->Please remove the spamtrap to email me.

Jim Weir (A&P/IA, CFI, & other good alphabet soup)
VP Eng RST Pres. Cyberchapter EAA Tech. Counselor
http://www.rst-engr.com

[Bob Chilcoat]

Jim,

That air compressor sprayer I gave you a couple of years ago is just a
venturi. Use the liquid imput end to generate the vacuum. Unless ypu lost
it, you already have what you need.

--
Bob (Chief Pilot, White Knuckle Airways)


"John Mireley" > wrote in message
...
> Jim Weir wrote:
>
> > Does anybody have an idea on how to make a tiny little vacuum pump on
the order
> > of an aquarium pump or so that will draw just a few inches of water?
Preferably
> > 110, but I can rig up a 12 volt supply if necessary.
> >
>
>
> If you have a compressor, use a venturi vacuum generator.
> Harbor freight has them for about $10 from time to time.
>
>

[clare @ snyder.on .ca]

On Mon, 19 Jan 2004 17:45:27 -0500, Mike Patterson
> wrote:

>On Sat, 17 Jan 2004 19:03:40 GMT, Tom Pappano >
>wrote:
>
>>Jim Weir wrote:
>>> Does anybody have an idea on how to make a tiny little vacuum pump on the order
>>> of an aquarium pump or so that will draw just a few inches of water? Preferably
>>> 110, but I can rig up a 12 volt supply if necessary.
>>>

Just get a little "mityVac" hand pump used for testing vac advance etc
on cars.
Or if you really need it mechanized, make an adapter for your vacuum
cleaner with an adjustable bleed

>>> The reason I say this is that I'm getting ready to pack a fairly large number of
>>> bags with used but serviceable engine parts (valves, pistons, etc.) and I'd like
>>> to put each part in a "baggie" (sandwich bag or equivalent) along with a little
>>> preservative oil, and then suck the baggie down with a football needle stuck
>>> into the top closing mechanism just before sealing.
>>>
>>> Thoughts?
>>>
>>> Jim
>>> Jim Weir (A&P/IA, CFI, & other good alphabet soup)
>>> VP Eng RST Pres. Cyberchapter EAA Tech. Counselor
>>> http://www.rst-engr.com
>
>
>Those aquarium air pumps pull air from around the case.
>
>How about placing one inside a cheapo tupperware-type container with a
>"suck" port mounted on the container, you'd also need to run a "blow"
>port from the pump's normal output through the container wall.
>
>HTH
>
>
>Mike Patterson
>Please remove the spamtrap to email me.