Heard this before - old wives tale IMHO. I could only imagine it working very rarely on specific dents. Also remember that as the metal gets cold it does contract but also gets less malleable or less bendy so the other way of looking at it is that you are actually freezing the dent solidly into shape. The amount of contraction involved over the tiny area of a dent would be too small to do much in terms of pulling a dent out - otherwise our cars would get smaller in the winter!

[Edited by Boost II - 5/2/2003 10:53:39 AM]

 

I have just heard an interesting idea, apparently it works in the majority of cases!!??

Apply Dry Ice to the dent - it pops out apparently??!!

As an Engineer I reckon the idea is that the metal contracts and 'Pulls' itself back to its original shape? Could work!!??

What do YOU think??

Pete

 

Anyone willing to boot their car and give it a try?

 

Yes its true, You can pick up dry ice at the post office.

LOL

 

That comment was so funny it made me LOL.

Interesting idea though, if you could get hold of the stuff - any left over from 1970's Aerosmith/Queen gigs????

 

We get a delivery every week at work

No dents on my car to try though (and hopefully never), any volunteers

Jim

 

our engineers use dry ice at work and I have 1 annoying dent. I will be contacting Dentmasters!!!

Steve

 

Lo @ R6

Les

 

Office aircon systems have dry ice in dont they, or is it just ice

 

I left my car out int he sun once, and it made a dent pop out a bit. Maybe it's just a change of temperature thing.

 

expensive way of dong it but bound to be more fun!!!! discharging a CO2 fire extinguisher produces dry ice so just squirt the extinguisher over the dents and out they pop

 

I dont think it will work.
When the metal is dented a new shape is formed in the metal just like the robots in the factory bending it in to that shape to start with. The dent was not course by heat to for the dent it was formed by force. I think that make sense.

Or if you apply to much dry ice you might end up with a sheet of metal

Still think you should try it Pete or get something a little stronger from work. If you know wot i mean

 

Cars DO get smaller in the winter!!!

Just the same as Concorde is much longer when its flying than when its on the ground!!!

I reckon it 'may' just work!!!

Pete

 

"Just the same as Concorde is much longer when its flying than when its on the ground!!!"

Not really m8.. but i know what you mean...

Jza

PS i can just imagine the scenes as casualty departments get flooded with Blue subaru jacket wearers with dry ice burns on fingers

 

sorry to be boring , but yes it would/does work , you can get 13kg of nitogen from BOC for £13 the gauge however to fit the bottle is about £102 (BOC again) i know cause i use it to test air con in office blocks for leaks if we acciDENTly damage a cooling coil we give it a squirt with some till the ice forms leave it to melt and most of the dent is gone not sure if the paint on a scoob is up to being taken down to -236 kelvin .

spanner

 

If you look at Subaru Paint it falls off the car

 

Spanner, if you can get anything down to -236 kelvins then I'm damn impressed

I think you mean -236 deg Celsius (or Fahrenheit)

 

I think absolute zero is 0 kelvin and is -273.15 degC,-459.67 degF, -218.52 degR or 0.00 rankine IIRC

Rouhly speaking of course and quite cold LOL

The hardest thing, due to metals thermal conductivity, would be to keep heat differencials either side to the dent. Otherwise theoritcaly possible

Tony

of course easier on GOLD

[Edited by T5NYW - 5/4/2003 11:03:51 AM]

 

If the dent isn't creased, why not just get behind it and push it out? Doesn't always work, but worth a try.

 

Let me see. This means that I could get any piece of metal, whack it with a sledgehammer, apply dry ice and it will return to its original shape. I don't think so.

 

By the way, an Engineer is a highly qualified graduate from a credited University who designs and constructs bridges, etc. You don't mean you're a mechanic by any chance?

 

Pslewis is a Engineer and not a grease monkey. As am i a Design Engineer just like him, but the difference is that he as a job and experience and i dont have any of that.

It seems that everyone is a Engineer of some sort these days so i know wot you mean. people spend years studying and you get people naming them selfs Engineers. That pi55es me off too.

 

Actually, the title "ENGINEER" was originally used to describe the person driving a railway locomotive.

 

Hey - don't joke, they could still get door dinks!