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DennisA (IL) 
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Joined: 11 Sep 2009
Location: Ridott IL.
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 Topic: To Prime or Not To Prime?
Posted: 26 Nov 2010 at 5:32pm |
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I remade a hopper for a potato planter out of stainless. I am getting ready to paint and was wondering if I need to prime it first. What do you recommend?
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Thanks & God Bless
Dennis
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427435
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Joined: 18 Nov 2010
Location: SE Minnesota
Points: 18637
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Posted: 26 Nov 2010 at 5:37pm |
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A major thing when painting is paint adhesion. Besides having the metal clean (especially of any oil), a good primer is a big help.
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Mark
B10 Allis, 917 Allis, 7116 Simplicity, 7790 Simplicity Diesel,
GTH-L Simplicity
Ignorance is curable-----stupidity is not.
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panelbeater
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Joined: 05 Oct 2010
Location: kingston nh
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Posted: 26 Nov 2010 at 5:38pm |
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it needs to be primed, i would use a self etching primer.
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http://s2.photobucket.com/albums/y45/panelbeater/
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Stan R
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Joined: 03 Dec 2009
Location: MA
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Posted: 26 Nov 2010 at 5:54pm |
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Stainless does not need any rust protection. You could leave it as is.
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MNLonnie
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Joined: 11 Sep 2009
Location: Baxter MN
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Posted: 26 Nov 2010 at 6:09pm |
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I'd have to agree with Stan, when you said stainless the first thing I thought was why paint it?
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Waukesha B, B, IB, G, styled WF, D15, 615 backhoe, 2-Oliver OC3's, 4 Ford Model T's, 3 Model A Fords, AV8 Coupe, AV8 Roadster, 1933 Ford Wrecker
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Rayhowling
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Joined: 02 Jan 2010
Location: Ont.
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Posted: 26 Nov 2010 at 8:51pm |
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Some metal parts and some equipment I have welded and built, I take a torch and heat the metal up and you would be surprised how mush moisture is in metal. I have heated 1/4 to 1/2 inch metal flat steel and the water will bead and run off of the steel even if it has been sitting in the sunshine for a couple of days. The paint sticks to the metal and it does not rust near as quickly when heated before painting.
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DSeries4
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Location: Ontario, Canada
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Posted: 26 Nov 2010 at 8:56pm |
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I don't think paint (or primer for that matter) sticks to stainless all that well anyway. I would leave it as is.
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Brian Jasper co. Ia
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Posted: 26 Nov 2010 at 10:42pm |
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If you really want paint to stick to your stainless, I'd sand blast it so it has a satin finish. Roughing it up gives the paint something to hang on to.
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"Any man who thinks he can be happy and prosperous by letting the government take care of him better take a closer look at the American Indian." Henry Ford
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Toscani SD
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Joined: 28 Dec 2009
Location: South Dakota
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Posted: 27 Nov 2010 at 7:04am |
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if u dont rough it up a little and prime,it will fall off period.
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Unit3
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Joined: 17 Oct 2009
Location: NC Iowa
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Posted: 27 Nov 2010 at 7:19am |
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Or buff until she shines like chrome.
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Dusty MI
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Joined: 13 Sep 2009
Location: Charlotte, Mi
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Posted: 27 Nov 2010 at 8:57am |
 Rayhowling wrote:
Some metal parts and some equipment I have welded and built, I take a torch and heat the metal up and you would be surprised how mush moisture is in metal. I have heated 1/4 to 1/2 inch metal flat steel and the water will bead and run off of the steel even if it has been sitting in the sunshine for a couple of days. The paint sticks to the metal and it does not rust near as quickly when heated before painting.
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That moisture you are seeing may not be coming from the steel but from your torch, most gases contain moisture, especially natural gas and LP gas.
Dusty
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BrettPhillips
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Posted: 27 Nov 2010 at 9:22am |
Toscani's got it right. If you must paint it, sandblast and then use an adhesion promoting primer (like XIM's Flash Bond http://www.ximbonder.com/products_detail.asp?id=63 ) I had an awful time getting paint to stick to a stainless project at my day job, and this was the only thing that worked in the end.
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David Maddux
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Posted: 27 Nov 2010 at 9:45pm |
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We used to use the xim flash bond for hard to hold areas, works like a charm. Just not as cheap as other stuff.
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