My ravioli bowl won't unstick. Took about an hour of prying, and still I couldn't unstick the plate.
Update: it took time. And then a quick pry with a knife. Saved the dishes. Ravioli saved too but for raccoons outside probably lol. What I learned about physics....sheesh.
It has been 6 hours since OP created the ravioli black hole that will eventually consume our planet. I think of all the wasted years I spent worrying as oblivion heads my way.
Put the whole thing in a pot of water and start bringing it to a slow simmer. This will warm the air inside, expanding it and breaking the suction. I got my stuck blender jar open this way, taking it out as soon as the first tiny bubble escaped and quickly unscrewing it before it could cool.
Heat and/or cold would be your friend in this situation.
Personally I would just toss the whole thing in the freezer for the night, but there is a small chance that results in a broken plate in the morning.
If you have an air compressor a blast of air right against the lip of the bowl would probably also pop it off.
Other than that just run hot water over the bowl (or submerge it) and then get the plate cold while being careful to not have the hot water touch the cold plate or visa versa.
Shrinking the bowl and the plate at the same time might just pop the seal when left in the freezer all night. It would only take a couple Crystal forming in the right spot to break that seal.
Blasting air into the seal could potentially resolve the pressure difference holding the bowl to the plate or force enough air into the bowl that it actually builds positive pressure inside and that pops the bowl off as well.
Heating the bowl would get it to expand slightly and cooling the plate would make it shrink slightly so doing them at the same time could cause the perfect seal they have formed to shift enough that it allows the pressure to equalize/release.
It's less about heating the gas inside the bowl to reverse the vacuum and it's more about breaking the seal that has formed in the first place.
Oh you melted the plate to the bowl lol. That's kinda impressive. It does make me wonder if your bowl was not dishwasher safe to begin with. Things shouldn't be melting/fusing in the dishwasher.
The power of suction is physically limited. That means it either isn't suction or op is crazy weak. My guess is that the plastic melted (probably not from boiling Temp) or op is strongly exaggerating.
How do you figure suction is very limited? You've never tried to pull a suction cup straight off, have you? I'm not talking about when suction cups have bad sealing surfaces and slowly leak to the point of popping off or peeling suction cups off from a corner, I'm talking applying it to a good surface and then yanking it.
A shoddy 4.5" suction cup from Harbor Freight is rated at 80lbs carrying capacity for glass, which happens to likely be the same material as the dish (corelle), judging form the thinness. The bowl is probably plastic and had weight on it while these were hot and wet after washing. Please, let me know if you can lift an 80lb dumbell from the end with a single hand with ease.
The difference between ambient pressure and inner pressure is always smaller than ambient pressure. Delta p is therefore limited. The force comes from Delta p times contact area which is constant.
I sadly don't know your units of mass but as I said a perfect vacuum over an area such as the Bowl is as strong as a muscle. The Ravioli will in no world produce a strong vacuum so muscle will win in most cases.
Pick which one to save and which one to sacrifice. Smash the sacrifice with a hammer to free the other, break them both and realize this is just so like you and every single thing you try to do starts with a half baked plan, then goes off the rails and ruins everything until you've nothing to do but pick up the pieces.
Hey, if you're using the hot bowl trick, make sure you pay attention to it; if you leave it to get hot and forget, it will be even harder to unstick it because the escaping hot air inside will make a partial vacuum when it cools down.
I also think heating everything up is the smoothest solution. But to offer an alternative, I'd use dental floss to get in between the bowl and plate. If the bowl has slightly rounded edges (I believe it will), it won't be too hard to get floss in. With the floss you'll get inevitably some air in... Which will equalise the pressure and break the vacuum.
As an inferior alternative to floss, fishing line could work for this approach as well.
I feel like this would cause a mild explosion. Not based on any real science, i just imagine that if it's stuck that good there's gonna be a more-than-satisfying pop when those finally separate, lol
Reminds me of when I tried doing some cocktails with a boston shaker (two metal tins). It's pretty easy to get those stuck - since metal bends it's probably easier to get then unstuck than a ceramic bowl, but the cocktail is probably ruined after you have been trying to get the tins unstuck for a couple of minutes. Plus the potential spillage.
I don't know if you did that, but for anybody struggling with those:
You're supposed to put them together at an angle, so that the outer wall of the tins forms one straight line from top to bottom.
Like this:
To open it you take them into one hand, hold them on the side where they form the straight line. Then take your other hand and gently smack against the part where the both tins connect with your palm
Here:
Since tin tins are hard to break (though not impossible I can tell from experience) you could also use a hard surface and more force if needed.
If they're still stuck, let some warm water run on where they connect and try again. Although the drink might get watery if you take too much time.
Yeah, I did those. What helped me was using very little pressure when putting the tins together, barely enough to create a seal. Some guides suggest pushing them together with a smack to create a seal, which is rather counterproductive when your issue is not being able to open it quickly.