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Zinc Chromate (Phasing out - going to Zinc Oxide)

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Larry Hursh

Joined: 16 Feb 2008
Posts: 125
Location: Edwardsburg, MI (near Elkhart, IN)

Posted: Fri Apr 04, 2008 9:14 am Post subject: Zinc Chromate (Phasing out - going to Zinc Oxide)

From what I can understand after talking with Wick's Aircraft, the zinc chromate IS being phased out for exactly what you said:  health reasons.  What is replacing it is zinc oxide.  I've ordered 4 cans of it.  I'll soon find out more about it.  Here is their website if your interested:  http://www.wicksaircraft.com/catalog/product_detail.php/pid=10643~subid=3911/index.html

   

  Wicks does NOT charge any Haz Mat charges for shipping ORD but it can not ship via air.  It has to go ground only.  The cost is $8.18 a can.  They offer it in the standard drab green and now also in yellow.  

   

  Hope this helps you.   

   

  Regards,

  



 

 

  Larry Hursh 

  CH601XL (Building from Kits - Just beginning)

  (N601LL Reserved) 

SkyriderSBN(at)Yahoo.com (SkyriderSBN(at)Yahoo.com)

   

  Keep your eyes skyward - always!

   

   



     [quote][b]

_________________
Larry Hursh (N650LM Reserved)

"One rivet at a time......one day at a time.."

CH650 (Converted from CH601XL)
1/2 done with fuselage
will be Corvair Powered

Tim Juhl

Joined: 21 Mar 2006
Posts: 488
Location: "Thumb" of Michigan

Posted: Fri Apr 04, 2008 11:30 am Post subject: Re: Zinc Chromate (Phasing out - going to Zinc Oxide)

I bought 4 cans of Zinc Oxide from aircraft spruce (not all at the same time.)  For some reason I was never able to use a full can before it got plugged up beyond recovery.  I gave up and use SEM self etching primer on internal mating parts. 



In general I would say that primers containing zinc would offer better corrosion protection but then again 6061 is pretty corrosion resistant by itself.



Tim



do not archive

_________________
______________
CFII
Champ L16A flying
Zodiac XL - Jabiru 3300A
Almost done! It'll fly in spring!

Larry Hursh

Joined: 16 Feb 2008
Posts: 125
Location: Edwardsburg, MI (near Elkhart, IN)

Posted: Fri Apr 04, 2008 12:03 pm Post subject: Re: Zinc Chromate (Phasing out - going to Zinc Oxide)

Hey Tim,

It sounds like you might not be clearing the nozzle after each time you use it.  Over time, the nozzle will plug up so badly, nothing will come out of it.  To clear it, turn the can upside down and spray it until it comes out with only air.  Do that each time you use it and you should be able to use the entire can next time.  This works with any spray cans of paint you are trying to use too.



Hope this helps you.



Regards

_________________
Larry Hursh (N650LM Reserved)

"One rivet at a time......one day at a time.."

CH650 (Converted from CH601XL)
1/2 done with fuselage
will be Corvair Powered

craig(at)craigandjean.com
Guest

Posted: Fri Apr 04, 2008 12:10 pm Post subject: Zinc Chromate (Phasing out - going to Zinc Oxide)

I also bought some rattle cans of Zinc Oxide from Spruce. I shook the heck

out of them to mix them but both clogged on the first squirt. Nothing I

could do cleared them. Now I just buy the quart cans. Mix it one-to-one with

the reducer:



PTI ZINC OXD PRIMER GRN QT	09-00962	$46.80

PTI 1022X66 REDUCER QT		09-00956	$14.60



www.aircraftspruce.com/catalog/cspages/ptispecialtypaint.php



-- Craig

Kevin Bonds

Joined: 09 Jan 2006
Posts: 171
Location: Nashville, Tn

Posted: Fri Apr 04, 2008 12:10 pm Post subject: Zinc Chromate (Phasing out - going to Zinc Oxide)

I have this problem with the tempo Zinc Oxide I use (valve plugging up). 

I have to take the valve off sometimes and re-seat it. Just basically 

pull it off and put it back on. It seems that they plug up if you press 

too hard on the valve. I just barely squeeze until paint comes out. It 

is very annoying at times though.



Kevin Bonds



Tim Juhl wrote:

 	  Quote: 	
		   



 I bought 4 cans of Zinc Oxide from aircraft spruce (not all at the same time.)  For some reason I was never able to use a full can before

_________________
KevinBonds
Nashville, TN
Plans-building Zenith CH601XL w/Corvair Power
http://home.comcast.net/~kevinbonds

Kevin Bonds

Joined: 09 Jan 2006
Posts: 171
Location: Nashville, Tn

Posted: Fri Apr 04, 2008 12:25 pm Post subject: Zinc Chromate (Phasing out - going to Zinc Oxide)

Larry



No, this dosen't seem to help or have anything to do with the cause. 

These cans are defective or something. They will plug up on first use 

within a couple of minutes. Very finicky.



Kevin Bonds



skyridersbn wrote:

 	  Quote: 	
		   



 Hey Tim,

 It sounds like you might not be clearing the

_________________
KevinBonds
Nashville, TN
Plans-building Zenith CH601XL w/Corvair Power
http://home.comcast.net/~kevinbonds

bobefx(at)yahoo.com
Guest

Posted: Fri Apr 04, 2008 1:05 pm Post subject: Zinc Chromate (Phasing out - going to Zinc Oxide)

Do you shake the cans for at least 2 minutes? It takes a lot to mix the can. If it is cold, get it to at least 72deg F and then shake it for all its worth until you feel your arm is going to fall off and than go for another minute beyond that, and it may still stick if a small poetical has not dissolved and mixed from the shaking. The ball has to move all over the can, shake, swirl, move it in all directions fast. 

  

 Bob

 ---

Larry Hursh

Joined: 16 Feb 2008
Posts: 125
Location: Edwardsburg, MI (near Elkhart, IN)

Posted: Fri Apr 04, 2008 1:14 pm Post subject: Zinc Chromate (Phasing out - going to Zinc Oxide)

Hey Kevin,

   

  If I have the same trouble with the ones I just recieved, I will be calling Wicks for a full refund.  At least I know there are quart cans and reducer available for it now.

If they give me trouble - their outta here!

   

  Regards,

   

   

   

   



 

  Larry Hursh 

  CH601XL (Building from Kits - Just beginning)

  (N601LL Reserved) 

SkyriderSBN(at)Yahoo.com (SkyriderSBN(at)Yahoo.com)

   

  Keep your eyes skyward -  always!

   

   



   [quote][b]

_________________
Larry Hursh (N650LM Reserved)

"One rivet at a time......one day at a time.."

CH650 (Converted from CH601XL)
1/2 done with fuselage
will be Corvair Powered

Kevin Bonds

Joined: 09 Jan 2006
Posts: 171
Location: Nashville, Tn

Posted: Fri Apr 04, 2008 1:45 pm Post subject: Zinc Chromate (Phasing out - going to Zinc Oxide)

Thanks Bob,

But, yes I do shake the crap out of them. I've used a lot of rattle can 

paint and never had this kind of trouble. I do get by though, as I said, 

I just pull the nozzle off, and put it back on. They don't seem to clog, 

so much as they just become jammed when pressed to hard.



 Kevin Bonds



Bob Sturgis wrote:

 	  Quote: 	
		   Do you shake the cans for at least 2 minutes? It takes a lot to mix 

 the can. If it is cold, get it to at least 72deg F and then shake it 

 for all its worth until you feel your arm is going to fall off and 

 than go for another minute beyond that, and it may still stick if a

_________________
KevinBonds
Nashville, TN
Plans-building Zenith CH601XL w/Corvair Power
http://home.comcast.net/~kevinbonds

ihab.awad(at)gmail.com
Guest

Posted: Fri Apr 04, 2008 1:45 pm Post subject: Zinc Chromate (Phasing out - going to Zinc Oxide)

On Fri, Apr 4, 2008 at 1:57 PM, Bob Sturgis <bobefx(at)yahoo.com> wrote:

 	  Quote: 	
		   shake it for all its worth until you feel your arm is going to fall off ...


	


Some have apparently tried to come up with a low-buck mechanical solution --



  http://newsgroups.derkeiler.com/Archive/Rec/rec.crafts.metalworking/2006-07/msg00714.html

  http://smg.photobucket.com/albums/0903/ghart3/?action=view&current=shaker.jpg



Ihab



-- 

Ihab A.B. Awad, Palo Alto, CA

rtdin

Joined: 16 Mar 2008
Posts: 46
Location: Florida panhandle

Posted: Fri Apr 04, 2008 2:03 pm Post subject: Zinc Chromate (Phasing out - going to Zinc Oxide)

I won't miss zinc chromate. I'm scared to death of it. I discussed my fears with a friend who is both an A&P and owns a paint dealership. He advised that I use Zinc Phosphate. He sells it to the local Naval Air Station (NAS Whiting field) where they have a few hundred T-34C and TH-57 aircraft to maintain. The Navy likes it because it won't kill you or the environment. I use it with a touchup HVLP gun. I still have most of a gallon can and reducer left. I'm no paint expert, but it goes on like any other primer. I also like Cortec and get it from ZAC.

 

 Bob Dingley

 601XL     Do not archive

*************http://travel.aol.com/travel-guide/united-states?ncid=aoltrv00030000000016)  [quote][b]

Tim Juhl

Joined: 21 Mar 2006
Posts: 488
Location: "Thumb" of Michigan

Posted: Fri Apr 04, 2008 2:26 pm Post subject: Re: Zinc Chromate (Phasing out - going to Zinc Oxide)

I've tried all sorts of things to prevent nozzle plugging including removing the nozzle and soaking it in thinner between uses.  Nothing helps.



Sometimes it appears the clog is elsewhere in the mechanism.  AC spruce replaced a couple of cans for free but they clogged too.



Tim

_________________
______________
CFII
Champ L16A flying
Zodiac XL - Jabiru 3300A
Almost done! It'll fly in spring!

bobefx(at)yahoo.com
Guest

Posted: Fri Apr 04, 2008 3:13 pm Post subject: Zinc Chromate (Phasing out - going to Zinc Oxide)

You must shake the can even while you are painting. If the can is not thoroughly  mixed it will clog down inside the can. shake, shake, shake that is all that works. Turn the can over when you stop for more than a second or two turn the can upside down and spray out the remaining in the tube or it will clog.

  

 Bob

 ---

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