How to paint al/steel chassis? - Page 2

chipco3434 · 18th May 2006, 05:00 AM

Look in the hardware store. it's used to clean walls before painting.

Remember when detergents were sold and advertised as "contains no phosphates"?

Well, it ain't that kinda' party.

redrabbit · 18th May 2006, 05:39 AM

An autobody /auto paint supply store will carry an already diluted - ready to go solution. Or a well stocked general paint store.

If you do go to a chemical supply, you won't need much. It's possible they sell pre-dilluted stuff. I'm not sure , I think it's 10-20% acid ---->to the water, brushed on, kept wet (keep re-brushing) for about 5 minutes, rinsed thoroughly. You will know it has been etched when the water no longer "beads" on the metal.

Always pour acid into water...not the other way around.

Why?? not sure, I assume that having full strength acid out in the open is just too dangerous, but when adding acid to the water, it is instantly dilluted, and therefore safer to work around.

=RR=

sklimek · 18th May 2006, 05:56 AM

Quote:

Originally posted by redrabbit
Always pour acid into water...not the other way around.

Why?? not sure, I assume that having full strength acid out in the open is just too dangerous, but when adding acid to the water, it is instantly dilluted, and therefore safer to work around.

=RR=

"Always pour acid into water, as the reverse could cause a cloud of dangerous fumes to immediately bubble up"

Quoted from a printmaking lab on using nitric acid for etching zinc plates.

I suppose if you are clumsy and pour the water into the acid to quickly it could splash out and start etching your flesh as well.

Stan

Tweeker · 18th May 2006, 08:36 AM

There is a high chance of spatter when pouring water into acid.

chipco3434 · 18th May 2006, 11:03 AM

You really shoulda oughta pour the acid in the watah...

Chem 100

18th May 2006, 08:36 AM	#14
Tweeker diyAudio Member Join Date: Dec 2004 Location: Cincinnati, Ohio	There is a high chance of spatter when pouring water into acid. __________________ Be sure your foil hat has a good low impedance ground.

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18th May 2006, 05:00 AM	#11
chipco3434 diyAudio Member Join Date: Feb 2004 Location: Racine, Wisconsin	Look in the hardware store. it's used to clean walls before painting. Remember when detergents were sold and advertised as "contains no phosphates"? Well, it ain't that kinda' party.

18th May 2006, 05:39 AM	#12
redrabbit diyAudio Member Join Date: Oct 2004	An autobody /auto paint supply store will carry an already diluted - ready to go solution. Or a well stocked general paint store. If you do go to a chemical supply, you won't need much. It's possible they sell pre-dilluted stuff. I'm not sure , I think it's 10-20% acid ---->to the water, brushed on, kept wet (keep re-brushing) for about 5 minutes, rinsed thoroughly. You will know it has been etched when the water no longer "beads" on the metal. Always pour acid into water...not the other way around. Why?? not sure, I assume that having full strength acid out in the open is just too dangerous, but when adding acid to the water, it is instantly dilluted, and therefore safer to work around. =RR=

18th May 2006, 11:03 AM	#15
chipco3434 diyAudio Member Join Date: Feb 2004 Location: Racine, Wisconsin	You really shoulda oughta pour the acid in the watah... Chem 100

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