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#21
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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&l...o+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) |
#22
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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 |
#23
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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 |
#24
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Jim
How well do you expect a system to evacuate whatever you use around the parts and how long do you want the bagged item to stay pristine? You can kludge a system but may or may not work in the short or long term for your objectives. If you bite the bullet and spring for a food saver, their bags can be reused - we normally make them bigger than required for initial bagging and then just cut the sealed tip end off and the bags can then be reused for the next item. The food saver is debugged and is plug and play without spending any time designing some kludge. What is your time worth? And the best Big John Pilot ROCAF Using the food saver you can buy plastic and cut size you want (that will fit food saver) and make bags (using the food saver to seal each side before evacuating and sealing the last side. Start thinking off the wall Jim G 50% Scotch and look for the best and cheapest to do the job. On Fri, 16 Jan 2004 09:26:50 -0800, Jim Weir wrote: 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 |
#25
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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 |
#26
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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... |
#27
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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 |
#28
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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$) * ************************************************** *********************** |
#29
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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$) * ************************************************** *********************** |
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