What metal or material will stay cold best after being in a freezer?
I am asking what metal or material will retain its coldness the longest after being kept in a standard home freezer. After being removed from the freezer, the metal will be subjected to a moderate heat source for 5-20 minutes. Is it a metal or something else, possibly ceramic? I am using this for a project.
Alex
Question answered by ChristopheraX
Metal would not be suitable for your project since it is a conductor.
Ceramic is a good candidate since it is an insulator. Depending on how hot the 'moderate heat source' is, there are different materials to choose from. If it's not very hot (below say 100degC), the you can try polystyrene (the stuff that makes cups that holds hot beverages) as it is an excellent thermal insulator - the thicker the better.
If the heat source is quite hot, then go for ceramic since ceramic can withstand high temperatures, just make sure that the change in temperature around the ceramic isn't too sudden otherwise it may crack.
What metal in a ring causes your finger to turn green?
What's a fairly cheap metal that a ring for a man can be made out of that won't cause the finger to get a green ring? Which metal causes it to turn green? And where can I buy a good ring? Lots of questions.
Elton
Question answered by lou
Brass, metal. Copper will react with the acid in your skin causing your finger to turn green. Some expensive jewellery is made with silver and the silver oxidides with acid from your skin
What kind of metal is best for long period of extreme depth underwater?
What kind of metal can sustain the pressure of lets say about 3000 meters deep in the Bathypelegic zone for at least 100 years. I want to know what kind of metal should be used and how thick it should be.
Ryan
Question answered by scubabob
You don't really say what application you're using this metal for. If it's simply to exist as a solid, not used as any hull of any sort or as a structure, then gold is what you're looking for. If you took a bar and dropped it into the deepest ocean depth, left it for 600 years or more, you'd only have to dust it off when you retrieved it. It is the most non reactive metal there is. It will not corrode in a natural environment.
Next after that and for structural purposes would be titanium. It will corrode but not nearly as quickly as other metals.
You ask how thick. Why? If you merely want to submerge a solid bar of either metal thickness doesn't matter as long as their is no compressible air space inside. Take a submarine. Submerge it. It can only go down in one piece to the depth it can withstand the water pressure trying to crush the airspace within that submarine. Take that same amount of metal in the submarine but instead of making it hollow, make is a solid cube. It won't crush no matter how far you drop it.
Thickness only matters for the material if it contains an air space. If it does contain air ( or any gas) then how big is that airspace? Bigger the space, the thicker it needs to be structurally. You can take a sealed metal cigar tube to 33 feet ( one atmosphere of pressure) and it probably won't deform. Using the same metal, same thickness on something like 6 feet in diameter will probably result in a crush.
What metal is worth money and what are the best places to look for it?
Can you weigh-in absolutely any metal because i have some spare metal with a plastic outer coating which i believe to be steel and wondered if it would be worth anything? Also what are the best places to find copper? Thanks
Can you weigh-in absolutely any metal because i have some spare metal with a plastic outer coating which i believe to be steel and wondered if it would be worth anything? Also what are the best places to find copper? Thanks
Where would it be likely found on a local construction site?
Sam
Question answered by Brian
What you have is "dirty" metal, "clean" would get more money, but its only steel... basically worthless they pay you in TONS. You can find copper in wires and stuff, just take some off a local construction site or something, just make sure the wires aren't live. Aluminum is worth some money too.
***UPDATE****
Look for upcoming little communities and stuff, just houses. Probably won't be able to get in to large construction sites... Damn Security.
What are good metal songs for a workout playlist?
I like metal the most, but it can also be rock, or even popular music, just anything to get me pumped out while running.
Eve
Question answered by R1deTheL1ghtn1ng
Slayer
1 Show no mercy
2 raining blood
3 metal storm
4 final command
5 Tormentor
Megadeth
1 peace sells
2 my last words
3 Holy wars
4 killing is businness
5 Dawn patrol
Exodus
1 Bonded by blood
Pantera
1 Primal concrete sledge
2 Psycho holiday
3 Cowboys from hell
Judas priest
1 Painkiller
2 Hell bent for leather
3 Rapid fire
Black sabbath
1 supernaut
2 Paranoid
3 symptom of the universe
These songs always get me going when i do bench press or dumbbell work out
How to stop a metal deer stand from squeaking?
My metal platform rubs against the tree and when I stop on it squeaks. What is odor less and will stop the squeaking?
I believe it squeaks where the metal touches the tree. I use a rachet strap and tighted very tight, there is some sqeaking when I step from the seat to the platform. Just curious how to stop the squeaking.
James S
Question answered by 13B US ARMY
Any bolts or screws on it? If so add plastic washers with the already metal ones. You can also teflon coat it and paint back over it. Same stuff used in pick up beds. Little expensive, but the stand will last for many many moons and want be as cold when you climb it bare handed. Use the rubbery type for extra grip.
Why does sawing metal sometimes make a screeching sound?
When you saw metal, sometimes you get a loud screeching sound. I just want to know exactly why is happens. Is it a particular type of metal? How do you avoid it?
Tim
Question answered by Gary H
Sound is vibration so the screeching sound you hear is something vibrating. If things are not vibrating or if they are vibrating at frequencies that are too high or too low for the human ear, you do not hear anything.
The type of metal makes a difference but, typically, it is the work piece (the piece you are cutting) that is making the noise. Cutting speed and lubrication normally have strong influence on the sound.
Can you paint a metal frame to keep from rusting?
I have a metal futon frame. Planning to use it outdoors under covered patio. Can I paint this to keep it from rusting? Can you paint metal?
Thanks,
Brenda - Orlando
I forgot to add that this has been used inside and has NO rust on it. It is in great condition. I would just like to use it on the covered deck now.
Brenda S
Question answered by Gail S
Absolutely. Rustoleum spray paint (which you can find in most any Lowe's, Home Depot, or hardware store) is meant to be used on metal. You'll want to buy both a can of spray paint in the color of your choice and a can of primer.
You'll use the primer first, to seal the metal and to help the spray paint you'll be using later to adhere better to the surface of your futon frame. Using many smaller sprays (rather than a few long, heavy sprays), apply two or more coats of primer to the futon frame. (The primer dries to the point when you can spray on another coat in just a couple minutes.) Be sure that all parts of the futon frame have been thoroughly coated with the primer before moving on to the spray paint. Repeat the process with the spray paint.
Be sure you do this outside (but not in the sun) or in a place that is very well ventilated, because the fumes are pretty nasty. Also be sure to use a drop cloth because the spray paint will get on any uncovered surface within 18-24" of where you're applying it -- even if you have really good aim. Some of this is because the paint tends to hang in the air for a while after you've applied it.
Hope this helps!
How much metal can go undetected through an airport metal detector?
People can get through those things with small amounts of metal like the buttons on their jeans. So how big does the metal object have to be for it to set the beeping thing off? The one you walk through.
Could it detect a safety pin or those clips from a tensor bandage thing?
@Kurt because I'm going on a plane tomorrow and those things are part of my normal attire. I would like to avoid any potentially awkward situations that may arise with airport security, if you must know.
JessiLoco
Question answered by Roger K
It depends entirely on how sensitive the detector is, or what level they have set it to if it is adjustable. All airports will not be exactly the same.
In the past, I have seen them detect the foil wrappings around the gum in a package (when they used to do that with gum). But it does not go off for eyeglasses (metal frames), wedding rings and so on.
I would not worry about buttons - like the metal clasps on suit pants, or the metal button on a pair of jeans. The clips on ace bandages (same as tensor bandage??) are probably aluminum, so they would not likely be detected anyway.
In any case - if it goes off, and your pockets are empty already, then they will go over you with the hand held wand to find the specific place that causes the alarm, and inspect it. If it is something removable - like a safety pin, they may have you take it off, then go back through the detector.
It may add a bit more time to your experience, but it is not any kind of a problem. Those kinds of things happen often.
What is the best metal detector for coin searching?
I am looking to get a metal detector to find coins. I have $80 to spend. I need a good metal detector that will find coins up to about 8''. I would prefer for it to approximate the depth of the object, but that is not a must because some metal detectors are expensive. Any suggestions?
Phil
Question answered by YOUknowWHOthisIS
The Gold Digger Metal detector looks like a good match. It is being sold on Ebay for 80. http://cgi.ebay.com/Gold-Digger-Metal-detector-/130459197502?pt=LH_DefaultDomain_0&hash=item1e5ff9603e