TheSamba.com :: View topic - Hot Dip or Media Blast?

Sat Mar 20, 2010 11:19 pm

I"m learning more and more that sometimes what seems like a good idea to me has probably been tried before and I may be able to learn from someone's past experience!

I've been hearing of lots of guys "hot dipping" stuff to clean it up....

rusty brake backing plates....want them cleaned up to paint.....is hot dip the right procedure? or should I stick with media blasting like I would usually do?

Is hot dipping a rust stripping process? :oops:

Thanks!

Sun Mar 21, 2010 1:07 am

i got my nasty dirty engine block hot dipped when i did a full rebuild. it turned out beautiful. just took a wire brush to it after i got it back and make it shine with some aluminum polish. the hot dip only cost 15 bucks too

Sun Mar 21, 2010 1:40 am

I've heard hot dipping only in reference to removing paint, grease, gunk, etc, but not rust. Not sure if it works on rust. Have to wait until someone who has had it stops by.
You could always do an electrolytic bath to remove the rust:
http://www.hainesengineering.com/rhaines/corvair.htm#electrolytic
scroll down a bit on that link and you'll see it. I've read this working incredibly well on removing rust.

Sun Mar 21, 2010 2:03 am

Get them media blasted. Easy, cheap, fast, done.

Sun Mar 21, 2010 4:54 am

Hot dipping will NOT remove any rust. It is usually sodium hydroxide, which is a base. Acid will remove rust, but not caustic (hot dip). Hot dip will also disolve aluminum.

Sun Mar 21, 2010 8:19 am

Media blast them!

Sun Mar 21, 2010 7:48 pm

Thanks for the info guys....think I'll be media blasting in order to clean up the rust and then shoot them with primer and black.

cheers.