Original Posted By: "del magsam"
Del,There is more than one type of powder out there and you have to be carefulwhat is used.There is powder that is "bridging" powder that will stretch when theunderlying metal cracks and spreads apart. This is not what we would wantto use but they might use it on lawn furniture. Appropriate powders willleave a coating that will crack when the underlying metal crack. I havefirst hand experience in the matter.Nor do you want to use epoxy based powder which will rapidly deteriorate insunlight because, well, it is the nature of epoxy to chaulk in the sun.Some powders leave a coating that is as fragile as glass. This is no goodbecause a swinging wrench will chip it bad.For more very worthwhile reading on powder coating, go to the following linkfor the article I wrote on the old BPA website:http://members.aol.com/bpabpabpa/powder.htmlOnce you powdercoat, you will never go back....Chris Bobka----- Original Message -----
Pietenpol-List: more on powdercoating
Re: Pietenpol-List: more on powdercoating
Original Posted By: "Christian Bobka"
Good, no, Great article except for the A-65 case. FAA doesn't permitaluminum to be heated to 400 for powder coating. Don't know if thisincludes casting however.Cy GalleyEditor, EAA Safety Programscgalley(at)qcbc.org or experimenter(at)eaa.org----- Original Message -----
Good, no, Great article except for the A-65 case. FAA doesn't permitaluminum to be heated to 400 for powder coating. Don't know if thisincludes casting however.Cy GalleyEditor, EAA Safety Programscgalley(at)qcbc.org or experimenter(at)eaa.org----- Original Message -----
Re: Pietenpol-List: more on powdercoating
Original Posted By: "Christian Bobka"
Chris,Will powder coating solve the problem of bolts knocking off the coating onbolt holes in metal fittings and then rusting? A big problem down here inFlorida.Ted----- Original Message -----
Chris,Will powder coating solve the problem of bolts knocking off the coating onbolt holes in metal fittings and then rusting? A big problem down here inFlorida.Ted----- Original Message -----
Re: Pietenpol-List: more on powdercoating
Original Posted By: "Cy Galley"
Cy,AC 43 refers to the impariment of 2024 and 2017 alloys if raised above 212degrees F. This is all I have ever seen on heating aluminum. Cylinders onan engine are heated way beyond this all the time. I wonder what the casetemperature is at the cylinder hold down studs. If you have other FAA infoon heating aluminum to 400 degrees or so for powdercoating, I would like tosee it.I wonder if the TSA has weighed in on powdercoating aluminum.It is rare that a casting will be heat treated.If anything, the heat will stress relieve.In the end, Dale did not powdercoat the case.chris----- Original Message -----
Cy,AC 43 refers to the impariment of 2024 and 2017 alloys if raised above 212degrees F. This is all I have ever seen on heating aluminum. Cylinders onan engine are heated way beyond this all the time. I wonder what the casetemperature is at the cylinder hold down studs. If you have other FAA infoon heating aluminum to 400 degrees or so for powdercoating, I would like tosee it.I wonder if the TSA has weighed in on powdercoating aluminum.It is rare that a casting will be heat treated.If anything, the heat will stress relieve.In the end, Dale did not powdercoat the case.chris----- Original Message -----
Re: Pietenpol-List: more on powdercoating
Original Posted By: "Christian Bobka"
hmmm.... my aluminum heads on my Corvair redline at 575 degrees and Itypically run them at 350-400. I don't know what alloy they are though.DJ VeghN74DVMesa, AZwww.imagedv.com/aircamper----- Original Message -----
hmmm.... my aluminum heads on my Corvair redline at 575 degrees and Itypically run them at 350-400. I don't know what alloy they are though.DJ VeghN74DVMesa, AZwww.imagedv.com/aircamper----- Original Message -----
Re: Pietenpol-List: more on powdercoating
Original Posted By: "Ted Brousseau"
Ted, I would say if you used the powder sold by Eastwood, which is a good ,general purpose, polyurethane based powder, it would be tough enough. Iinfer that you mean the paint scraped by a bolt turning in it hole whilealmost tight?Chris----- Original Message -----
Ted, I would say if you used the powder sold by Eastwood, which is a good ,general purpose, polyurethane based powder, it would be tough enough. Iinfer that you mean the paint scraped by a bolt turning in it hole whilealmost tight?Chris----- Original Message -----
Re: Pietenpol-List: more on powdercoating
Original Posted By: "Christian Bobka"
Chris,Yes, that is it. The bolt knocks of the inside coating of the hole and thenstarts to breed corrosion. Sure would like to come up with somethingflexible that would protect that metal.Ted----- Original Message -----
Chris,Yes, that is it. The bolt knocks of the inside coating of the hole and thenstarts to breed corrosion. Sure would like to come up with somethingflexible that would protect that metal.Ted----- Original Message -----
Re: Pietenpol-List: Building efficiently
Original Posted By: Clif Dawson
Subject: Re: Pietenpol-List: Building efficiently(if it isn't spam), "see the administrator of that system for details. Content preview": Thanks.Jim.for.saving.me.some.bucks.I.was.hoping.they.could.save.time.with.the.other.parts.as.well.Greg.Menoche.Thanks.Jim.for.saving.me.some.bucks.I.was.hoping.they.could.save.time.wiThanks Jim for saving me some bucks. I was hoping they could save time with the other parts as well.Greg Menoche________________________________________________________________________________Date: Wed, 03 Dec 2003 22:52:13 -0800
Subject: Re: Pietenpol-List: Building efficiently(if it isn't spam), "see the administrator of that system for details. Content preview": Thanks.Jim.for.saving.me.some.bucks.I.was.hoping.they.could.save.time.with.the.other.parts.as.well.Greg.Menoche.Thanks.Jim.for.saving.me.some.bucks.I.was.hoping.they.could.save.time.wiThanks Jim for saving me some bucks. I was hoping they could save time with the other parts as well.Greg Menoche________________________________________________________________________________Date: Wed, 03 Dec 2003 22:52:13 -0800