First lets get some cool music going
Scissors
4 mm clear hose
Super glue for the joins
Blue tack
Mix it apoxy putty
Heavy nylon bag
Glass jar for catch tank
4 mm hose joiners
Discarded 220 ltr tank
Tape
Making the catch can Remove the lid drill 2 holes through and push in the top 2 4mm hose joiners seal around top and bottom with kneed it epoxy putty
Make a bell pump
Drill 4mm hole on top of drum.
Drill 4mm hole on bottom of the drum
Attach 4mm hose joiner same method as catch tank
Connect 4mm hose to the bottom of the drum about just longer than the drum.
Make a peice of wire around 100mm long attach it to other end of the hose bend the whire to a hook shape and hang the hose on the drum.
This is the trigger for the pump
Attach all components use 4mm hose from top of drum to one side of catch can
Attach other left of catch can connector to hose coming from the bag
Setting it up to suck at 220 kg force
Remove the drum cap and fill with water all the way to the top then reattach lid.
Place your job you want to laminate in the bag n seal the bag with the tacky putty
To turn on the 220 kg of vaccume simply unhook the end of the trigger hose and drop it on the ground.
The air and the liquid in the bag is sucked through to replace the space of water drained out of the drum at a force of 220kg.
For demonstration only ive used a wet sponge.
For a larger job just add another drum off the catch can and make 440kg of suck or keep on repeating and create your own black hole.
The hydro skipper, vac pump using hydraulic bell tank theory. Thanks to my freinds at the power plant for giving me the drum
Interesting write-up Hydro-Skiper. I hope the hazard symbol is a witty decoration and not native to the barrel.
Do you have plans to run this out on a project?
Do you have a vacuum gauge to add to the system to quantify ‘suck’?
It’d be neat to have an equivalency, like one barrel drained equals so many inches of mercury with a bag this long by that wide.
@Stoneburner-That sounds like too much math. I just want to know what it can do: will it draw down a fin, or a board, or crush the barrel, or collapse the universe like the 'Skiper said.
right, the height of the container, not the size is the more important feature. I don’t think a 3’ high drum is enough at all. Try it with a 10ft length of rigid drain pipe, that could give about enough to do something with, but still no better than plugging your shop vac into the vacuum outlet. And not enough to get a “high performance” result. especially because it will leak down unless you have a series of “pumps” to hook up I think.
Other than using a pressure conversion calculator, very little math.
PM sent.
The drum works well enough for laming my fins. it dasnt leak down the water got to a point and
Jist stopped.
Ill try the lengh of drain pipe it sounds like you know you’re physics
It sucked the hell out of that spunge though.
I did consider the water colum weight but i questioned if it only applied to the sqare cm pressure in the water it self at the bottom of the drum
I watched myth busters they were working out how much force it would take for jack sparrow and his m8 to pull a small upside down full of air row boat under the water to walk along the mottom of the ocean and ise it as a dive bell.
They worked out there was over 1000 ltrs of air so it will take the same amount of weight to push down.
They filled the boat with water.
If my vaccume is oporating on the weight of water of 3 feet by the size of my hose 4mm the amount of suck it has dosnt make any sence at all.
Its probably the weight of the water from the bottom at 4mm to the top 850mm of contaner radius of 565 that plus preshure force of the rest of the container drum degraiding as higher up the drum .
Ill experiment with it ferther next week end , and do some trig to see if their would be a great difference of pressure between a drain pipe or a drum.
Any pump that uses suction (removes air) to lift water cannot raise water more than 10.3 m upward [one atmosphere (14.7 psi) of negative pressure].
A pump that pushes water generates positive pressure that can be greater than 14.7 psi.
This section was deleated as it was early incorect information on my behalf and it confused the line of text for the reader.
If I saw my neighbor building that in their backyard I’d call the authorties ASAP