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03-03-2017, 07:39 AM
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Join Date: Aug 2016
Location: Sarasota, FL
Posts: 38
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For those interested in subject of chemistry I wanted to share what I found in the Material Safety Data Sheets regarding if these primers contain chromates.
Akzo Nobel 463-12-8
Strontium Chromate 5-10% by weight
Sherwin-Williams P60G2
Chromium Zinc Oxide / Chromium VI (as Cr) 7% by weight
I have no idea what the difference is b/t Strontium Chromate and Chromium Zinc Oxide but I would imagine they are similar and have similar chemical reactions to protect non-ferrous metals like aluminum. Interesting...
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Casey M
Sarasota, FL
EAA 180
RV-10
Starting on empennage section - August 2016
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03-03-2017, 08:17 AM
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Join Date: Sep 2013
Location: Ooltewah, TN.
Posts: 580
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Quote:
Originally Posted by FL-flyer
Thank you very much Larry, Lynn and Steve!
I really appreciate you sharing all of your ideas. I'm excited to start priming now 
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Thats what makes this forum so great! Sharing of knowledge is key to a good community. I am still very very new at all this, but I have around 150 hours at this point. There are a bunch of great folks on here that are willing to help out and answer questions about anything. I am just glad I am able to start contributing back in some small way!
Good luck on the build! And have fun!
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Lynn Dixon
RV-7 Slider -
Tail kit Completed - March 2017
Wing Kit Started - June 2017
My Build Log: http://www.theskunkwerx.com
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03-03-2017, 12:00 PM
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Join Date: Oct 2014
Location: Cedar Rapids, IA
Posts: 232
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Quote:
Originally Posted by FL-flyer
Akzo Nobel 463-12-8
Strontium Chromate 5-10% by weight
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Yea akzo is pretty nasty stuff. I have a full mask I wear just opening the cans and the smell still makes it thru that. For spraying, I bought one of the forced air setups on ebay and wear a full hazmat suit. Works great, with the added bonus I look like a martian when the kids happen to see me.
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03-03-2017, 01:18 PM
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Join Date: Sep 2013
Location: Ooltewah, TN.
Posts: 580
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Quote:
Originally Posted by unitink72
Yea akzo is pretty nasty stuff. I have a full mask I wear just opening the cans and the smell still makes it thru that. For spraying, I bought one of the forced air setups on ebay and wear a full hazmat suit. Works great, with the added bonus I look like a martian when the kids happen to see me.
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The type of filter cartridge you use make a HUGE difference. I am using the organic chemical filters from 3M that are designed for paint work. They specifically filter out all the nasty chemicals. I can put my face right over the cans and not get any hint of fumes, they work great. They also work great at filtering out acetone, which is a hard chemical to filter out.
Here's my priming PPE setup:
The respirator and fitlers were about $100 from Amazon. And the Tyvek suit was a whopping $8-12 (depending on size) from Amazon. For less than $150, you can have full body coverage, including face/eyes with filters that will eliminate all the nastiness. Its well worth the money.
Just be aware, your neighbors will think you are cooking methamphetamines if they catch a glimpse through your windows. Plus, it makes for a really awesome halloween costume!
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Lynn Dixon
RV-7 Slider -
Tail kit Completed - March 2017
Wing Kit Started - June 2017
My Build Log: http://www.theskunkwerx.com
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04-26-2017, 02:44 PM
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Join Date: Aug 2016
Location: Sarasota, FL
Posts: 38
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I wanted to ask if anyone knows what product is recommended for cleaning the spray gun after using the Akzo Nobel primer. Thanks!
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Casey M
Sarasota, FL
EAA 180
RV-10
Starting on empennage section - August 2016
Last edited by FL-flyer : 04-26-2017 at 02:54 PM.
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04-26-2017, 03:18 PM
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Join Date: Sep 2013
Location: Ooltewah, TN.
Posts: 580
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Acetone always works great for me with AKZO. MEK would work too.
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Lynn Dixon
RV-7 Slider -
Tail kit Completed - March 2017
Wing Kit Started - June 2017
My Build Log: http://www.theskunkwerx.com
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04-26-2017, 06:55 PM
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Join Date: Jun 2016
Location: Tampa, FL
Posts: 18
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From a guy who deals with hazmat stuff at work: if you can smell something through your respirator than you are using the wrong filter or it fits improperly.
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04-26-2017, 11:02 PM
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Join Date: Sep 2013
Location: Ooltewah, TN.
Posts: 580
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Quote:
Originally Posted by hockeyrcks9901
From a guy who deals with hazmat stuff at work: if you can smell something through your respirator than you are using the wrong filter or it fits improperly.
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Thats a very important point. AKZO spray is carcinogenic so don't mess around with this stuff. Proper PPE is really cheap. A good face mask like in my photo a few posts above was about $120 bucks, and comes with two organic vapor cartridges with 2 snap-on covers that trap the overspray to prolong the life of the vapor cartridges. Its a full face mask so your eyes are protected too, and it seals up great and doesn't fog up. It also comes with a few "tear-offs" for the visor. so you dont have to worry about getting overspray on the mask.
I got mine from Amazon: http://amzn.to/2p6beXL Its WELL worth the money.
I did end up switching out the cartridges to these guys: http://amzn.to/2pnYxI6
Those 3M 60926 are the big daddys when it comes to filtration. They are a little more pricey, but they are the only ones I have found that will completely filter out acetone. I can stick the cartridge right over the acetone bucket and not get a single hint of smell. They are not hard at all to breathe through and I have managed to use them several times over. I really recommend them.
The Tyvek suit is about the best $10 bucks you'll spend on PPE. Its a full body suit, so it covers your shoes and your entire head as well. If you use it in combination with the face mask, the hoodie will seal totally around the face mask, and you can zip it all the way up your neck, leaving your hands as the only exposed part of your body. A pair of latex gloves and you don't have to worry about any overspray at all. These suits are disposable, but I have managed to get quite a few uses out of one suit with no problems. Also available at the Amazon Aviation Supply:
http://amzn.to/2qgW1Rp
__________________
Lynn Dixon
RV-7 Slider -
Tail kit Completed - March 2017
Wing Kit Started - June 2017
My Build Log: http://www.theskunkwerx.com
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04-26-2017, 11:43 PM
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Join Date: Dec 2011
Location: Meridian ID, Aspen CO, Okemos MI
Posts: 2,645
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Hey Lynn,
Would you rather use a supplied air mask or the cartridge filtered mask? I have the Hobby Air system but my mask used up so I either buy a new supplied air mask or a filter mask. Just looking for another opinion.
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rockwoodrv9a
Williamston MI
O-320 D2A
Awaiting DAR Inspection
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04-27-2017, 12:08 AM
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Join Date: Sep 2013
Location: Ooltewah, TN.
Posts: 580
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Quote:
Originally Posted by rockwoodrv9
Hey Lynn,
Would you rather use a supplied air mask or the cartridge filtered mask? I have the Hobby Air system but my mask used up so I either buy a new supplied air mask or a filter mask. Just looking for another opinion.
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Man, thats a tough one. Those Hobby Air systems are supposedly really nice. I haven't used one, but read lots of good things about them. So long as you keep the pump unit in a good clean air environment, it'll supply plenty of fresh cool air. If you can find a replacement full face mask, that might be the way to go.
I would not recommend a half face mask for AKZO however. I have a cheapo 3M half face mask that I use when I am grinding and cleaning my parts with Acetone (it also uses the 3M pink filters, the same ones as my full face mask). I originally thought I'd just use it to spray the primer, but after having some of the overspray blow back in my face from shifting winds, and get under my safety glasses I decided that was a bad idea. I don't think I got much in my eyes, but it aggravated the daylights out of my right eye for about 2 days....almost to the point of going to an optometrist. I decided then and there that I would never spray AKZO without using a full face.
If you can't find a replacement full face mask for your Hobby Air, then I'd probably take a look at the 3M cartridge full face masks. The one I mentioned is comfortable, seals up really well (even with my long beard), and is easy to breathe in with no fogging.
For what its worth, I came REALLY, REALLY close to buying a HobbyAir.
__________________
Lynn Dixon
RV-7 Slider -
Tail kit Completed - March 2017
Wing Kit Started - June 2017
My Build Log: http://www.theskunkwerx.com
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