Engineering Question

RJM62

RJM62

Touchdown! Greaser!
Gone West
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Geek on the Hill
What would be the chances of a plastic jar full of natural-style peanut butter bursting if it were placed in a paint shaker for about five minutes?

Thanks,

Rich
 
Standard engineering answer: it depends. If the paint shaker is at the resonant frequency of the mass of peanut butter, I could see it happening.
 
Time to experiment, get a couple cases of beer and 100 of the plastic jars of peanut butter. Shake each jar for five minutes while drinking beer. Count broken jars and write report...
 
RJM62 said:
What would be the chances of a plastic jar full of natural-style peanut butter bursting if it were placed in a paint shaker for about five minutes?

Thanks,

Rich
Click to expand...

0% because the plastic jar likely wouldn't hold up to the "initial clamp down" of the paint shaker in the first place.
 
RJM62 said:
What would be the chances of a plastic jar full of natural-style peanut butter bursting if it were placed in a paint shaker for about five minutes?

Thanks,

Rich
Click to expand...

Close to zero, but if it does, it'll be cool.
 
timwinters said:
0% because the plastic jar likely wouldn't hold up to the "initial clamp down" of the paint shaker in the first place.
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Assumes facts not in evidence.

The OP clearly states "placed in paint shaker". He does not claim it is clamped down, that the shaker is turned on, nor does he state that the paint shaker is functional or connected to power. ;-)

All of these factors (and more) would need to be understood before an accurate prediction could be given.

(edit - I'm only funning you...)

I doubt the thing would break, but you never know.
 
kyleb said:
Assumes facts not in evidence.

The OP clearly states "placed in paint shaker". He does not claim it is clamped down, that the shaker is turned on, nor does he state that the paint shaker is functional or connected to power. ;-)

All of these factors (and more) would need to be understood before an accurate prediction could be given.
Click to expand...

It is an engineering question, not a lawyer question...
 
Possible... The product could liquify during the shaking process, causing internal friction and heat up and expand to a size greater then the vessel it is in.....

I give it a 1 in a million chance of breaking the container though...
 
I was thinking about marketing peanut butter shakers, modeled on paint shakers. Little countertop jobbies. It would eliminate the trauma of stirring.

Rich
 
RJM62 said:
I was thinking about marketing peanut butter shakers, modeled on paint shakers. Little countertop jobbies. It would eliminate the trauma of stirring.

Rich
Click to expand...



Hmmmmm..

Most peanut butter is so thick in viscosity that the device to shake it would have to shake more then a hooker in church with a 5 dollar customer outside waiting for the trick....;)......:D
 
N801BH said:
Hmmmmm..

Most peanut butter is so thick in viscosity that the device to shake it would have to shake more then a hooker in church with a 5 dollar customer outside waiting for the trick....;)......:D
Click to expand...

I suppose it would have to come with the counter...

Rich
 
RJM62 said:
I was thinking about marketing peanut butter shakers, modeled on paint shakers. Little countertop jobbies. It would eliminate the trauma of stirring.

Rich
Click to expand...

Sure, probably sell $2,000,000,000 on QVC.:lol: You may actually be better off with an ultrasonic rig. Put it in oil down and turn on the ultrasonics.
 
I turn my peanut butter jars over from time to time...

Problem solved.

E=MC2
 
Now I want to put peanut butter in my soda stream and carbonate it.

mmmm carbonated peanut butter
 
SixPapaCharlie said:
I just motor boated my monitor
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Thanks man, thanks alot.....I had to google "Motor Boating" to see what you were talking about and it just happens I click on a video link with my wife sitting next to me:mad2::rofl::mad2::rofl::mad2::rofl:.....

Not only did she use my full name, but it quickly struck the curiosity of my daughter who jumped up and caught a glimpse of the old mans computer screen before I could click it off.......:confused:
 
Last edited:
Uh, do you have references to cite?

(Standard engineering answer.)
 
Sac Arrow said:
Uh, do you have references to cite?

(Standard engineering answer.)
Click to expand...

Surely there's a chart somewhere in a reference manual that We can reference so that we aren't require to manually calculate the answer.
 
timwinters said:
0% because the plastic jar likely wouldn't hold up to the "initial clamp down" of the paint shaker in the first place.
Click to expand...

The last several gallons of paint I've bought came in metal cans with plastic bottoms. I've also had 5-gallon buckets of paint shaken without a problem.
 
RJM62 said:
I was thinking about marketing peanut butter shakers, modeled on paint shakers. Little countertop jobbies. It would eliminate the trauma of stirring.

Rich
Click to expand...

Who stirs peanut butter?

oops, just noticed the poster. My guess is that he buys "ground peanuts" not peanut butter; the grind of all "natural" peanut butter I have seen is rather coarse, causing lumps of peanuts to separate from the oil. True peanut butter is an emulsification, finely ground and mixed with the oil. Good peanut butter has chunks of broken peanuts mixed in after grinding and emulsifying.
 
Hank S said:
Who stirs peanut butter?

oops, just noticed the poster. My guess is that he buys "ground peanuts" not peanut butter; the grind of all "natural" peanut butter I have seen is rather coarse, causing lumps of peanuts to separate from the oil. True peanut butter is an emulsification, finely ground and mixed with the oil. Good peanut butter has chunks of broken peanuts mixed in after grinding and emulsifying.
Click to expand...

Thing is, to prevent separation requires hydrogenating the fat, and there you cause your health concerns.
 
Sac Arrow said:
Uh, do you have references to cite?

(Standard engineering answer.)
Click to expand...

Just do like Fred did, and Google motor boating yourself. He was too busy escaping his wife and shielding his daughter to save the reference for you.

--signed, Bachelors and Masters of Engineering
 
RJM62 said:
I was thinking about marketing peanut butter shakers, modeled on paint shakers. Little countertop jobbies. It would eliminate the trauma of stirring.

Rich
Click to expand...

If it works on a can of tahini I'm in. It takes me 20min to stir up a can that has been sitting a long time.
 
Hank S said:
Who stirs peanut butter?

oops, just noticed the poster. My guess is that he buys "ground peanuts" not peanut butter; the grind of all "natural" peanut butter I have seen is rather coarse, causing lumps of peanuts to separate from the oil. True peanut butter is an emulsification, finely ground and mixed with the oil. Good peanut butter has chunks of broken peanuts mixed in after grinding and emulsifying.
Click to expand...

And right you are. But my main reason for wanting the "natural" peanut butter is because it contains neither sugar nor a sugar substitute. Only the "natural" ones meet that requirement, and only a very few of them at that. Smucker's, Teddie's, and Price Chopper's store brand are the only ones I know of offhand.

Rich
 
Bill Jennings said:
If it works on a can of tahini I'm in. It takes me 20min to stir up a can that has been sitting a long time.
Click to expand...

I was thinking maybe something that works like a washing machine agitator. Clamp the jar in and agitate it into well-mixed bliss. Although Henning's ultrasonic idea is still in the running. Either way, if it mixes peanut butter, I think it should mix tahini.

Rich
 
By the way, has anybody actually defined what the failure mode is?
 
RJM62 said:
I was thinking maybe something that works like a washing machine agitator. Clamp the jar in and agitate it into well-mixed bliss. Although Henning's ultrasonic idea is still in the running. Either way, if it mixes peanut butter, I think it should mix tahini.

Rich
Click to expand...

The thing about ultrasonic is it's going to be much quieter and the clamp can be much less robust.
 
Sac Arrow said:
By the way, has anybody actually defined what the failure mode is?
Click to expand...

There seems to be much concern that the PB container will burst, but no one has posited the mechanism by which this could happen. (Afterthought: this type of PB often comes in thin PET containers with snap lids, not the sturdy jars with screw-on lids used by the likes of Jif or Peter Pan. They may well be crushed. )

The most likely occurrence, to me anyway, is incompletely mixed ground peanuts. Well mixed peanut pieces and oil appears unlikely using this method.

What's to fear? Shake away!!
 
I have natural peanut butter. I would not buy one piece of equipment to shake up one jar of peanut butter.
 
Cpt_Kirk said:
I have natural peanut butter. I would not buy one piece of equipment to shake up one jar of peanut butter.
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So... I guess you're not interested in getting a copy of the prospectus, either?

Rich
 
Why not just throw it in the microwave? It stirs real easy when it's warm.
 
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