A little experiment for Brynn and I - De-rusting the hood

I wanted to go work on the car and Brynn wanted to hang with daddy - so inspired by an early morning watching of Sid The Science kid, we decided to do a science experiment with daddy's new gallon of Eastwood Acid Etch Gel.

Here's the surface I'm working with - painted with a light film of rust and a rusty dust covering the metal.

Our sample... masked off and slathered with the gel.  The directions indicate that it works best when the temp is 70 and above.  I'm not going to be near that with it at -5 outside.... but I was able to get it to 55 for our exercise. 

What I found with this stuff - is that it does like to slowly dry out.  After about an hour - I took Margery's plastic wrap out and covered the location so that it would keep as much moisture as possible.  It mad quite a bit of difference.

Here's the spot after three hours.  Pretty impressive if you ask me .  I scrubbed it down with a scotch brite and some cleaning solution.. .and was left with this.  Not too shabby!  Now I need to do the rest of the car!

It does appear that the rust is coming from underneath the paint a bit... so I may need to de-rust, strip paint, then de-rust again.  We'll see.