remember the clip where CO2 was used to pop out a dent, does anyone know if the CO2 should be sprayed in the dip of the dent or does it matter. Reason I ask is I have a dent on a door which is really a bulge rather than a dent due to being hit from the inside of the car. You might need to read that twice thanks to how bad I just wrote that anyway I've got a can of gas and want to try it out over the weekend. Anyone know the answer?

i guess do it from the inside.

hit it with a hammer to push it in.

well I'm trying to avoid the hammer as the clip showed the panel simply poping back into shape. I should have mensioned that the dent is behind a inner skin and hence it's not been fixed. I was going to drill a little hole for the nozzel to spray through and heat the panel from the outside with the hairdryer.

Park it next to my Missus' car. She'd knock it back in with her door in no time!!

The clip showed the CO2 being sprayed all over the dent. I imagine the force is generated by the skin cooling faster than the rest of the metal, therefore generating a powerful contraction effect.
I'm certainly going to give this a go when I get a day off.

^^^^ interesting. I would have thought it would be difference in air temperature resulting in pressure difference that was the driving force.

anyone know how it works?

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Originally posted by RazMan
The clip showed the CO2 being sprayed all over the dent. I imagine the force is generated by the skin cooling faster than the rest of the metal, therefore generating a powerful contraction effect.

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