how to homebrew a 7000-psi mechanical press?

On 20 Apr 2005 00:18:59 -0700, wrote:

>how to design a 7000-psi mechanical press using standard (preferably,
>Home-Depot) available components?
>
>application is separation of edible-oils from an agricultural crop.


[newsgroup list trimmed away from hobby groups etc.]


Uh, oh!

Here comes another student with a coconut-crusher
homework project.

Hint: a screw press with a nice weight on the screw lever does well.
Or try my crusher: a wooden lever on the classical nut-cracker design,
writ large.

Brian Whatcott

) writes:
> how to design a 7000-psi mechanical press using standard (preferably,
> Home-Depot) available components?
>
> application is separation of edible-oils from an agricultural crop.
>

a bottle jack, car jack, or the car itself as a weight, but it might be
difficult to do the calculations.

the easiest to calculate would be the suggestion of a lever made from, say
a standard 10' 2x6, or maybe two nailed together for double thickness.

you won't get much travel from any of the above but you can use blocks
or wedges to build up height.

I haven't looked on the Interent but I'd check under oilseeds, corn oil,
rape seed (canola), linseed (flaxseed), or sunflower presses.

BTW does it have to be a cool press?
For some uses the oil cannot be heated during the pressing.

--
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I'll type this really, really slowly...
[first removing the hobby group list though]

A force of 1000 lbs applied to a die with a 1/7 sq inch cross section
exerts a pressure of 7000 psi.

Brian Whatcott Altus, OK


On Fri, 22 Apr 2005 00:35:32 -0500, "--" > wrote:

>c'mon guys - basic engineering, please - how do you get 7000 psi if you
>don't contain?
>he didn't say a 7000 pound press, he said a 7000 psi press.
>
>"Christopher Tidy" > wrote in message
...
>> -- wrote:
>> > > wrote in message
>> > oups.com...
>> >
>> >>how to design a 7000-psi mechanical press using standard (preferably,
>> >>Home-Depot) available components?

"Paul Hovnanian P.E." > wrote in message
...
> quietguy wrote:
>>
>> Well, as a rule (at least among non engineers) for presses they are rated
>> by
>> the ton - eg a 3 ton press uses a 3 ton hydrolic jack, and the pressure
>> it
>> applies then depends on the area over which that 3 ton is applied.

Gentlemen...........

Since many of you have obviously earned scientific credentials and since you
seem to have some familiarity with computer protocol, would it be too much
to politely request that you refrain from posting in multiple newsgroups?

Many of your remarks are directed at your friends and acquaintenances in
your usual haunts. I know this was originally the "fault" of the OP, but it
need not continue endlessly. Please be assured I am aware of the options of
ignoring the thread or taking up knitting. But this mindless blather about
"When is a pound a pound?" is getting tiresome. Write something interesting
once in a while.

Sorry - rant mode off. Isn't the weather nice? - or maybe you're in
Michigan. . .

Rich

P.S. Just to **** everyone off equally - it is spelled "hydraulic".