Original Posted By: "Jack Phillips"
Like a few others on the list I've got a few holiday "days" off. I'm going toweld my wing cabane fittings and want to get them primed.I know Bingelis says zinc chromate for priming the metal. I've found it availableat Aircraft Spruce and Wicks, but was wondering if it was an item I mightfind (or substitute) locally. I live in a small town but it has 3 autobody shopsthat have auto metal primers, but the ones I've seen don't have zinc chromateas an ingredient.Is it okay to use a metal primer (such as for autos) that doesn't have zinc chromate(or phosphate) as a component? Or is this something I need to order froman aircraft supply company (like I've done for all wood, metals, glues, bolts,cables, etc.)Thanks,TomRead this topic online here:http://forums.matronics.com/viewtopic.p ... __________
Pietenpol-List: Metal primer
RE: Pietenpol-List: Metal primer
Original Posted By: owner-pietenpol-list-server(at)matronics.com
For what it's worth, zinc chromate doesn't offer very good protectioncompared to one of the newer 2-part epoxy primers. I'd go ahead and orderone of them made by Randolph or Poly Fiber and get it from Aircraft Sprucerather than just using a rattle can primer. A lot of the metal parts on aPietenpol are not easy to get to for inspection and may have undetectedrust. I'd use the best primer money can buy, which is epoxy.Jack PhillipsNX899JPSmith Mountain Lake, Virginia-----Original Message-----
For what it's worth, zinc chromate doesn't offer very good protectioncompared to one of the newer 2-part epoxy primers. I'd go ahead and orderone of them made by Randolph or Poly Fiber and get it from Aircraft Sprucerather than just using a rattle can primer. A lot of the metal parts on aPietenpol are not easy to get to for inspection and may have undetectedrust. I'd use the best primer money can buy, which is epoxy.Jack PhillipsNX899JPSmith Mountain Lake, Virginia-----Original Message-----
Pietenpol-List: Re: Metal primer
Original Posted By: "flea"
Tom,Another alternative to consider is powder coating your metal parts (as opposedto using wet paint).If you're going to powder coat, there's no primer required - the powder basicallymelts directly onto the surface of the steel, forming a very strong mechanicalbond. Powder coating is extremely durable, and environmentally friendly (nosolvents).Bill C.Read this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: Metal primer
Tom,Another alternative to consider is powder coating your metal parts (as opposedto using wet paint).If you're going to powder coat, there's no primer required - the powder basicallymelts directly onto the surface of the steel, forming a very strong mechanicalbond. Powder coating is extremely durable, and environmentally friendly (nosolvents).Bill C.Read this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: Metal primer
Pietenpol-List: Re: Metal primer
Original Posted By: "Don Emch"
I have a little of both on my Piet, 1.7 oz and 2.7 oz. I've used both Poly Fiberand dope on different projects. I'm a fan of dope. But that's just my preference.Darn dope prices really jumped a couple of months ago. Just placedan order and was really shocked compared to an order I placed back in the summer...Don EmchNX899DERead this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: Metal primer
I have a little of both on my Piet, 1.7 oz and 2.7 oz. I've used both Poly Fiberand dope on different projects. I'm a fan of dope. But that's just my preference.Darn dope prices really jumped a couple of months ago. Just placedan order and was really shocked compared to an order I placed back in the summer...Don EmchNX899DERead this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: Metal primer
> Pietenpol-List: Metal primer
Original Posted By:> tdudley(at)umn.edu
Last time I painted anything aircraft I used Epoxy Zinc Chromate. Doug DeverIn beautiful Stow Ohio> Subject: Pietenpol-List: Metal primer
Last time I painted anything aircraft I used Epoxy Zinc Chromate. Doug DeverIn beautiful Stow Ohio> Subject: Pietenpol-List: Metal primer
Re: Pietenpol-List: Re: Metal primer
Original Posted By: Jim Markle
Jim said,......... consider powder coating. 80 for the equipment and the powder of your choice and the cost of an old oven from Craigslist, the process was simple too, preheat the part, apply powder, bake on and cool.OK. I'll ask the question ---- "Where do we get the instructions on how to Powder Coat?" Chuck ________________________________________________________________________________Date: Fri, 23 Dec 2011 08:04:08 -0600 (GMT-06:00)
Jim said,......... consider powder coating. 80 for the equipment and the powder of your choice and the cost of an old oven from Craigslist, the process was simple too, preheat the part, apply powder, bake on and cool.OK. I'll ask the question ---- "Where do we get the instructions on how to Powder Coat?" Chuck ________________________________________________________________________________Date: Fri, 23 Dec 2011 08:04:08 -0600 (GMT-06:00)
> Re: Pietenpol-List: Re: Metal primer
Original Posted By: Jim Markle
Pietenpol-List: Re: Old Member....NE Oklahoma
Original Posted By: "RickBright"
Here are a couple of videos demonstrating the process:http://www.youtube.com/watch?v=T01zIKxP ... iDaqUcBill (not a Jim)Read this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: Old Member....NE Oklahoma
Here are a couple of videos demonstrating the process:http://www.youtube.com/watch?v=T01zIKxP ... iDaqUcBill (not a Jim)Read this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: Old Member....NE Oklahoma
RE: Pietenpol-List: Metal primer
Original Posted By: owner-pietenpol-list-server(at)matronics.com
I don't think you can buy REAL zinc chromate primer any longer thanks to theEPA. Maybe Chromium is a toxic heavy metal? The "new" stuff seems to be nobetter than weak green paint. Jack Phillips has the correct answer, just use a self-etching epoxy primeravailable at any auto paint store. The brand we use is Variprime. It worksgreat and gives great "tooth" for the topcoat to stick to.Barry-----Original Message-----
I don't think you can buy REAL zinc chromate primer any longer thanks to theEPA. Maybe Chromium is a toxic heavy metal? The "new" stuff seems to be nobetter than weak green paint. Jack Phillips has the correct answer, just use a self-etching epoxy primeravailable at any auto paint store. The brand we use is Variprime. It worksgreat and gives great "tooth" for the topcoat to stick to.Barry-----Original Message-----
Re: Pietenpol-List: Re: Metal primer
Original Posted By: Pietn38b(at)aol.com
Jim, Thanks for the info. After reading that article I think I will stick to painting. The paint will last as long as I do and I don't really need it to be that pretty.You are welcome here anytime but I'm more than a hundred miles west of Raleigh. If you're ever in Winston-Salem (even Greensboro) call me. Would love to get together. I'll protect all my tools! ;>) Chuck> http://homemetalshopclub.org/projects/powder.pdf>>> ________________________________________________________________________________
Jim, Thanks for the info. After reading that article I think I will stick to painting. The paint will last as long as I do and I don't really need it to be that pretty.You are welcome here anytime but I'm more than a hundred miles west of Raleigh. If you're ever in Winston-Salem (even Greensboro) call me. Would love to get together. I'll protect all my tools! ;>) Chuck> http://homemetalshopclub.org/projects/powder.pdf>>> ________________________________________________________________________________
RE: Pietenpol-List: Pietenpols and Movies
Original Posted By:> owner-pietenpol-list-server(at)matronics.com
Subject: RE: Pietenpol-List: Pietenpols and Movies> Well, there's always TGWP, otherwise known as The Great Waldo Pepper.> > > > My favorites also include The Spirit of Saint Louis, starring Jimmy > Stewart,and Those Magnificent Men in their Flying Machines.> > > > Jack Phillips> > NX899JP> > Smith Mountain Lake, Virginia> > > > _____ >
Subject: RE: Pietenpol-List: Pietenpols and Movies> Well, there's always TGWP, otherwise known as The Great Waldo Pepper.> > > > My favorites also include The Spirit of Saint Louis, starring Jimmy > Stewart,and Those Magnificent Men in their Flying Machines.> > > > Jack Phillips> > NX899JP> > Smith Mountain Lake, Virginia> > > > _____ >
RE: Pietenpol-List: Metal primer
Original Posted By:> bed(at)mindspring.com
The old ZInc Chromate primer contained lead. This is no longer true. If you use a "self etching primer" make sure it containes zinc tetroxychromate otherwise it contains not anti corrosive qualities. I have found that rust will come right through self etching primer in just a few days unless the steel is etched with phosphoric acid. IMHO "self etching primer isn't worth much. The best procedure would be to etch with phosporic acid then prime with an epoxy zinc chromate. Just my .02 Doug DeverIn beautiful Stow Ohio
The old ZInc Chromate primer contained lead. This is no longer true. If you use a "self etching primer" make sure it containes zinc tetroxychromate otherwise it contains not anti corrosive qualities. I have found that rust will come right through self etching primer in just a few days unless the steel is etched with phosphoric acid. IMHO "self etching primer isn't worth much. The best procedure would be to etch with phosporic acid then prime with an epoxy zinc chromate. Just my .02 Doug DeverIn beautiful Stow Ohio
Re: Pietenpol-List: Re: Metal primer
Original Posted By: "Kenneth M. Heide"
Hmmm, acid etch, then epoxy primer, then finish paint. Looks like powder coatingmight be the easier method.BCRead this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Re: Pietenpol-List: Re: Metal primer
Hmmm, acid etch, then epoxy primer, then finish paint. Looks like powder coatingmight be the easier method.BCRead this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Re: Pietenpol-List: Re: Metal primer
Original Posted By: gliderx5(at)comcast.net
Sign painters paint: One Shot. Lead based applied with a brush! Really tough stuff!Kenneth M. HeideSent from my iPhoneOn Dec 23, 2011, at 7:56 PM, "Bill Church" wrote:> > Hmmm, acid etch, then epoxy primer, then finish paint. Looks like powder coatingmight be the easier method.> > BC> > > > > Read this topic online here:> > http://forums.matronics.com/viewtopic.p ... 570#361570> > > > > > > > > > ________________________________________________________________________________Date: Sat, 24 Dec 2011 02:34:44 +0000 (UTC)
Sign painters paint: One Shot. Lead based applied with a brush! Really tough stuff!Kenneth M. HeideSent from my iPhoneOn Dec 23, 2011, at 7:56 PM, "Bill Church" wrote:> > Hmmm, acid etch, then epoxy primer, then finish paint. Looks like powder coatingmight be the easier method.> > BC> > > > > Read this topic online here:> > http://forums.matronics.com/viewtopic.p ... 570#361570> > > > > > > > > > ________________________________________________________________________________Date: Sat, 24 Dec 2011 02:34:44 +0000 (UTC)
RE: Pietenpol-List: Pietenpols and Movies
Original Posted By: owner-pietenpol-list-server(at)matronics.com
Well, there's always TGWP, otherwise known as The Great Waldo Pepper.My favorites also include The Spirit of Saint Louis, starring Jimmy Stewart,and Those Magnificent Men in their Flying Machines.Jack PhillipsNX899JPSmith Mountain Lake, Virginia _____
Well, there's always TGWP, otherwise known as The Great Waldo Pepper.My favorites also include The Spirit of Saint Louis, starring Jimmy Stewart,and Those Magnificent Men in their Flying Machines.Jack PhillipsNX899JPSmith Mountain Lake, Virginia _____
Pietenpol-List: Re: Pietenpols and Movies
Original Posted By: "Dortch, Steven D MAJ MIL USA FORSCOM"
The Great Waldo Pepper.Jim.Read this topic online here:http://forums.matronics.com/viewtopic.p ... __________
The Great Waldo Pepper.Jim.Read this topic online here:http://forums.matronics.com/viewtopic.p ... __________
Re: RE: Pietenpol-List: Pietenpols and Movies
Original Posted By: Jack Phillips
Subject: Re: RE: Pietenpol-List: Pietenpols and MoviesThe rocketeer, for some great 1930s footage. Amelia has some great footage in anotherwise boring movie. Blue Skies,Steve D----- Original Message -----
Subject: Re: RE: Pietenpol-List: Pietenpols and MoviesThe rocketeer, for some great 1930s footage. Amelia has some great footage in anotherwise boring movie. Blue Skies,Steve D----- Original Message -----
Pietenpol-List: Re: Metal primer
Original Posted By: "Bill Church"
My favorites for good flying scenes not already mentioned:Air AmericaAlwaysTop GunThese days you could probably find the NBC series Ba Ba Black Sheep.ToolsRead this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: Metal primer
My favorites for good flying scenes not already mentioned:Air AmericaAlwaysTop GunThese days you could probably find the NBC series Ba Ba Black Sheep.ToolsRead this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: Metal primer
Pietenpol-List: Re: Metal primer
Original Posted By: "tdudley(at)umn.edu"
I don't think you want to be using sign painter's paint to paint all of the metalparts - and especially on bare metal. This was a question about metal primerwasn't it?Bill C.Read this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: Metal primer
I don't think you want to be using sign painter's paint to paint all of the metalparts - and especially on bare metal. This was a question about metal primerwasn't it?Bill C.Read this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: Metal primer
> Pietenpol-List: Re: Metal primer
Original Posted By:> billspiet(at)sympatico.ca
I'd still etch before powder coating=2C but=2C yes that'd be the way to go if you have the stuff. Etched metal=2C even when left bare won't rust for several months. The phosphoric acid reacts with iron oxide and turns it into iron phosphate which is inertDoug DeverIn beautiful Stow Ohio> Subject: Pietenpol-List: Re: Metal primer
I'd still etch before powder coating=2C but=2C yes that'd be the way to go if you have the stuff. Etched metal=2C even when left bare won't rust for several months. The phosphoric acid reacts with iron oxide and turns it into iron phosphate which is inertDoug DeverIn beautiful Stow Ohio> Subject: Pietenpol-List: Re: Metal primer
RE: Pietenpol-List: Pietenpols and Movies
Original Posted By: owner-pietenpol-list-server(at)matronics.com
Military based.Strategic Air Command, The Blue Max, Bombers B 52 and DrStrangelove.JackDSMNX1929T _____
Military based.Strategic Air Command, The Blue Max, Bombers B 52 and DrStrangelove.JackDSMNX1929T _____
Pietenpol-List: Pietenpols and Movies
Original Posted By: Michael Perez
Re: Pietenpol-List: Metal primer
Original Posted By:> > bed(at)mindspring.com
It's my understanding phosphoric acid is widely used in the auto manufacturing industry as well as many other industries. Where would one source phosphoric acid for paint prep? Greg BaconOn Dec 23, 2011, at 6:45 PM, Doug Dever wrote:> The old ZInc Chromate primer contained lead. This is no longer true. If you use a "self etching primer" make sure it containes zinc tetroxychromate otherwise it contains not anti corrosive qualities. I have found that rust will come right through self etching primer in just a few days unless the steel is etched with phosphoric acid. IMHO "self etching primer isn't worth much. The best procedure would be to etch with phosporic acid then prime with an epoxy zinc chromate. Just my .02 > > Doug Dever> In beautiful Stow Ohio> >
It's my understanding phosphoric acid is widely used in the auto manufacturing industry as well as many other industries. Where would one source phosphoric acid for paint prep? Greg BaconOn Dec 23, 2011, at 6:45 PM, Doug Dever wrote:> The old ZInc Chromate primer contained lead. This is no longer true. If you use a "self etching primer" make sure it containes zinc tetroxychromate otherwise it contains not anti corrosive qualities. I have found that rust will come right through self etching primer in just a few days unless the steel is etched with phosphoric acid. IMHO "self etching primer isn't worth much. The best procedure would be to etch with phosporic acid then prime with an epoxy zinc chromate. Just my .02 > > Doug Dever> In beautiful Stow Ohio> >
Re: Pietenpol-List: Re: Pietenpols and Movies
Original Posted By: mike Hardaway
Subject: Re: Pietenpol-List: Re: Pietenpols and Movies
Subject: Re: Pietenpol-List: Re: Pietenpols and Movies
Re: Pietenpol-List: Pietenpols and movies
Original Posted By: Greg Bacon
Another great movie is "Second Hand Lions" not really a flying movie but the opening and closing scenes are worth it.Dick N.________________________________________________________________________________Date: Sat, 24 Dec 2011 19:00:23 -0600Subject: Re: Pietenpol-List: Pietenpols and movies
Another great movie is "Second Hand Lions" not really a flying movie but the opening and closing scenes are worth it.Dick N.________________________________________________________________________________Date: Sat, 24 Dec 2011 19:00:23 -0600Subject: Re: Pietenpol-List: Pietenpols and movies
Re: Pietenpol-List: Metal primer
Original Posted By: gbacon67(at)gmail.com
Greg=2CIt's becoming harder to find with the advent of the self etching primers. Some autobody suppliers still carry it. Believe it or not Home Depot carries it. The trade name is Must For Rust made by Krud Kutter. You can also order it through most Ace hardware stores and avoid shipping charges. Very few of the Ace stores stock it=2C but they carry the Krud Kutter brand. Use it full strength as it's already reduced. We often use Naval Jelly for rust removal on vertical surfaces=2C but I'm not sure if the thickening agent in it affects adhesion. Hope this helps.Doug DeverIn beautiful Stow OhioSubject: Re: Pietenpol-List: Metal primer
Greg=2CIt's becoming harder to find with the advent of the self etching primers. Some autobody suppliers still carry it. Believe it or not Home Depot carries it. The trade name is Must For Rust made by Krud Kutter. You can also order it through most Ace hardware stores and avoid shipping charges. Very few of the Ace stores stock it=2C but they carry the Krud Kutter brand. Use it full strength as it's already reduced. We often use Naval Jelly for rust removal on vertical surfaces=2C but I'm not sure if the thickening agent in it affects adhesion. Hope this helps.Doug DeverIn beautiful Stow OhioSubject: Re: Pietenpol-List: Metal primer
Pietenpol-List: Re: Pietenpols and Movies
Original Posted By: "TriScout"
Okay, so this doesn't directly address the issue of metal primer,but it may be that if you use some of these metal treatments, youmay decide not to put any other finish on them. Besides the NavalJelly phosphate treatment, there are things like rust bluing andcold bluing that may be of interest.The one that I have used and like pretty well in locations wherethe part will not be visible (or where you want the zinc chromatelook) is green rebar epoxy. There are several manufacturers,Krylon is one, but the one I've used is Aervoe. I just did a quicksearch and places like toolauthority.com have it for $6.25 for a16 oz. spray can.I don't think it is intended as a primer, since it has a fairlysmooth cured surface.Oscar ZunigaAir Camper NX41CC "Scout"Flying Squirrel N2069Z "Rocket"Medford, ORwebsite at http://www.flysquirrel.net ________________________________________________________________________________Subject: Pietenpol-List: Re: Pietenpols and Movies
Okay, so this doesn't directly address the issue of metal primer,but it may be that if you use some of these metal treatments, youmay decide not to put any other finish on them. Besides the NavalJelly phosphate treatment, there are things like rust bluing andcold bluing that may be of interest.The one that I have used and like pretty well in locations wherethe part will not be visible (or where you want the zinc chromatelook) is green rebar epoxy. There are several manufacturers,Krylon is one, but the one I've used is Aervoe. I just did a quicksearch and places like toolauthority.com have it for $6.25 for a16 oz. spray can.I don't think it is intended as a primer, since it has a fairlysmooth cured surface.Oscar ZunigaAir Camper NX41CC "Scout"Flying Squirrel N2069Z "Rocket"Medford, ORwebsite at http://www.flysquirrel.net ________________________________________________________________________________Subject: Pietenpol-List: Re: Pietenpols and Movies
Original Posted By: "Gary Boothe"
"The War Lover"... circa 1962 I think. Steve McQeen... no fake cardboard cockpits...veryrealisticRead this topic online here:http://forums.matronics.com/viewtopic.p ... __________
"The War Lover"... circa 1962 I think. Steve McQeen... no fake cardboard cockpits...veryrealisticRead this topic online here:http://forums.matronics.com/viewtopic.p ... __________
Original Posted By: "C N Campbell"
> To: pietenpol-list(at)matronics.com> > > Like a few others on the list I've got a few holiday "days" off. I'm going to weld my wing cabane fittings and want to get them primed.> > I know Bingelis says zinc chromate for priming the metal. I've found it available at Aircraft Spruce and Wicks=2C but was wondering if it was an item I might find (or substitute) locally. I live in a small town but it has 3 autobody shops that have auto metal primers=2C but the ones I've seen don't have zinc chromate as an ingredient.> > Is it okay to use a metal primer (such as for autos) that doesn't have zinc chromate (or phosphate) as a component? Or is this something I need to order from an aircraft supply company (like I've done for all wood=2C metals=2C glues=2C bolts=2C cables=2C etc.)> > Thanks=2C> > Tom> > > > > Read this topic online here:> > http://forums.matronics.com/viewtopic.p ... 513#361513> > > > > > > =======================================================> > > ________________________________________________________________________________
> To: pietenpol-list(at)matronics.com> > > Like a few others on the list I've got a few holiday "days" off. I'm going to weld my wing cabane fittings and want to get them primed.> > I know Bingelis says zinc chromate for priming the metal. I've found it available at Aircraft Spruce and Wicks=2C but was wondering if it was an item I might find (or substitute) locally. I live in a small town but it has 3 autobody shops that have auto metal primers=2C but the ones I've seen don't have zinc chromate as an ingredient.> > Is it okay to use a metal primer (such as for autos) that doesn't have zinc chromate (or phosphate) as a component? Or is this something I need to order from an aircraft supply company (like I've done for all wood=2C metals=2C glues=2C bolts=2C cables=2C etc.)> > Thanks=2C> > Tom> > > > > Read this topic online here:> > http://forums.matronics.com/viewtopic.p ... 513#361513> > > > > > > =======================================================> > > ________________________________________________________________________________
> RE: Pietenpol-List: Metal primer
Original Posted By:> owner-pietenpol-list-server(at)matronics.com
> > > I don't think you can buy REAL zinc chromate primer any longer thanks to the> EPA. Maybe Chromium is a toxic heavy metal? The "new" stuff seems to be no> better than weak green paint. > Jack Phillips has the correct answer=2C just use a self-etching epoxy primer> available at any auto paint store. The brand we use is Variprime. It works> great and gives great "tooth" for the topcoat to stick to.> Barry> > -----Original Message-----
> > > I don't think you can buy REAL zinc chromate primer any longer thanks to the> EPA. Maybe Chromium is a toxic heavy metal? The "new" stuff seems to be no> better than weak green paint. > Jack Phillips has the correct answer=2C just use a self-etching epoxy primer> available at any auto paint store. The brand we use is Variprime. It works> great and gives great "tooth" for the topcoat to stick to.> Barry> > -----Original Message-----
Original Posted By: "Jack"
> To: pietenpol-list(at)matronics.com> ca>> > I don't think you want to be using sign painter's paint to paint all of the metal parts - and especially on bare metal. This was a question about metal primer wasn't it?> > Bill C.> > > > > Read this topic online here:> > http://forums.matronics.com/viewtopic.p ... 582#361582> > > > > > > =======================================================> > > ________________________________________________________________________________
> To: pietenpol-list(at)matronics.com> ca>> > I don't think you want to be using sign painter's paint to paint all of the metal parts - and especially on bare metal. This was a question about metal primer wasn't it?> > Bill C.> > > > > Read this topic online here:> > http://forums.matronics.com/viewtopic.p ... 582#361582> > > > > > > =======================================================> > > ________________________________________________________________________________
> RE: Pietenpol-List: Pietenpols and Movies
Original Posted By:>
> > > > > > > > > > > > > > > > > > > > > Military> basedStrategic Air> Command, The Blue Max, Bombers B 52 and Dr> Strangelove > > Jack> > > DSM> > > NX1929T> > > > > > > > > > > > >
> > > > > > > > > > > > > > > > > > > > > Military> basedStrategic Air> Command, The Blue Max, Bombers B 52 and Dr> Strangelove > > Jack> > > DSM> > > NX1929T> > > > > > > > > > > > >
> > RE: Pietenpol-List: Metal primer
Original Posted By:> > owner-pietenpol-list-server(at)matronics.com
> > > > > > I don't think you can buy REAL zinc chromate primer any longer thanks to the> > EPA. Maybe Chromium is a toxic heavy metal? The "new" stuff seems to be no> > better than weak green paint. > > Jack Phillips has the correct answer, just use a self-etching epoxy primer> > available at any auto paint store. The brand we use is Variprime. It works> > great and gives great "tooth" for the topcoat to stick to.> > Barry> > > > -----Original Message-----
> > > > > > I don't think you can buy REAL zinc chromate primer any longer thanks to the> > EPA. Maybe Chromium is a toxic heavy metal? The "new" stuff seems to be no> > better than weak green paint. > > Jack Phillips has the correct answer, just use a self-etching epoxy primer> > available at any auto paint store. The brand we use is Variprime. It works> > great and gives great "tooth" for the topcoat to stick to.> > Barry> > > > -----Original Message-----
Original Posted By:> bed(at)mindspring.com
It's my understanding phosphoric acid is widely used in the auto manufacturing industry as well as many other industries. Where would one source phosphoric acid for paint prep? Greg BaconOn Dec 23=2C 2011=2C at 6:45 PM=2C Doug Dever wrote:The old ZInc Chromate primer contained lead. This is no longer true. If you use a "self etching primer" make sure it containes zinc tetroxychromate otherwise it contains not anti corrosive qualities. I have found that rust will come right through self etching primer in just a few days unless the steel is etched with phosphoric acid. IMHO "self etching primer isn't worth much. The best procedure would be to etch with phosporic acid then prime with an epoxy zinc chromate. Just my .02 Doug DeverIn beautiful Stow Ohio
It's my understanding phosphoric acid is widely used in the auto manufacturing industry as well as many other industries. Where would one source phosphoric acid for paint prep? Greg BaconOn Dec 23=2C 2011=2C at 6:45 PM=2C Doug Dever wrote:The old ZInc Chromate primer contained lead. This is no longer true. If you use a "self etching primer" make sure it containes zinc tetroxychromate otherwise it contains not anti corrosive qualities. I have found that rust will come right through self etching primer in just a few days unless the steel is etched with phosphoric acid. IMHO "self etching primer isn't worth much. The best procedure would be to etch with phosporic acid then prime with an epoxy zinc chromate. Just my .02 Doug DeverIn beautiful Stow Ohio
> RE: Pietenpol-List: Metal primer
Original Posted By:> owner-pietenpol-list-server(at)matronics.com
> > > I don't think you can buy REAL zinc chromate primer any longer thanks to the> EPA. Maybe Chromium is a toxic heavy metal? The "new" stuff seems to be no> better than weak green paint. > Jack Phillips has the correct answer=2C just use a self-etching epoxy primer> available at any auto paint store. The brand we use is Variprime. It works> great and gives great "tooth" for the topcoat to stick to.> Barry> > -----Original Message-----
> > > I don't think you can buy REAL zinc chromate primer any longer thanks to the> EPA. Maybe Chromium is a toxic heavy metal? The "new" stuff seems to be no> better than weak green paint. > Jack Phillips has the correct answer=2C just use a self-etching epoxy primer> available at any auto paint store. The brand we use is Variprime. It works> great and gives great "tooth" for the topcoat to stick to.> Barry> > -----Original Message-----