I came across this on a Firebird forum I belong to, has anyone ever tried this?
Remove Car Dent With Airduster - Video

 

No, but I'm going to try it on my VW Eos this weekend and I'll let you know how it works...

 

That is pretty cool. It looks like it will work on certain typpes of indentations. It will be interesting if it works on door dings.

I see that there is a small ding in front of where they fixed the indentation. I guess that was a no go.

Hope I don't need to use the technique.

Great find......Thanks for sharing.

 

Very cool (no pun intended), however it is NOT liquid CO2. Carbon dioxide does not have a liquid state, but sublimes directly into a gas from a solid, skipping the liquid state (i.e., dry ice).

I'd love to try this on a spare door!

 

Did it say it caused damage to the paint?

 

Great video.

They say pretty explicitely that it is only for large dents and will not work anywhere near a crease. Can cause paint damage, they say for smaller dents and door dings to use the same hair dryer and heat the area, then hold a small piece of dry ice in a pair of plyers and put it to the heated dent, it should pop right out. Caution: if the dent has any sort of scratch or gouge in the paint, when it pops, chances are, it will pop your paint off too....

 

On steel or aluminum, a dent is a multi-axis bend in the metal where the force applied exceeded the yield strength, but not its tensile modulus.

Because it's a yield failure, changing the temperature of the metal will not do anything, except make you look foolish. It can, however, be bent back without reducing the strength of the metal, hence a qualified dent repair person could make a repair.

Save your $5.00 on Duster and spend it later on real dent repair.

 

There are many dents being fixed on Utube, using dry Ice. It works in some dents but dents come in all forms. Give it a try and see u Tube.

CO2 does exist as a liquid in fire extinguishers UNDER PRESSURE in excess of about 75 pounds. THe resturaunts all have CO2 for the sodas and that is often in the liquid containers seen on trucks, but not at regular atmospheric pressure.

There are several physical and chemical properties, which belong to carbon dioxide.
Here we will sum them up in a table.
Property
Value
Molecular weight
44.01
Specific gravity
1.53 at 21 oC
Critical density
468 kg/m3
Concentration in air
370,3 * 107 ppm
Stability
High
Liquid
Pressure < 415.8 kPa
Solid
Temperature < -78 oC
Henry constant for solubility
298.15 mol/ kg * bar
Water solubility
0.9 vol/vol at 20 oC



Read more: http://www.lenntech.com/carbon-dioxide.htm#ixzz0RUxEWDRO

Oh yeah, one more thing/..........................

WEEKEND IS HERE
WEEKEND IS HERE

WEEKEND IS HERE

WEEKEND IS HERE

WEEKEND IS HERE

Woody

 

Interesting. An old technique down here for removing hail dents is to leave your car out in the 100 degree heat, let the metal heat up and rub an ice cube over it. I have never tried it or needed to try it.

 

Courtesy of Wiki.


I would add a comment but the chart speaks for itself so I having nothing to add, as I don't understand it at all.
PS the pressure is in bars (atmospheric pressure = 1 bar)

 

After a LARGE hailstorm here I was told dry ice would remove the dings. I figured I had nothing to loose so I bought a pound. I studied several You Tube videos. I first tried the hair dryer. No change. I then moved to a paint stripping heat gun. The dents did not come out and I was very worried about doing damage to the paint.
So...I gave the dry ice to my kids and they a LOT of fun experimenting with it so it was not a total loss.
Short version...it does not work.