Frame painting questions - The 1947 - Present Chevrolet & GMC Truck Message Board Network

71/454 · 06-09-2006, 04:47 PM

I'm currently in the process of prepping my frame with a wire wheel for por-15. Anyone who has done this i think will agree that the novelty runs out quick. I have a few concerns though, I'm trying to be real thorough so I don't look back on this frame off and say geez i shoulda done the frame better the rust is coming thru. My trouble is this, there are a few places in between the crossmenber and the frame rail I just cant get into and secondly i was planning on brushing the por-15 on because i dont have access to a fresh air respirator, again there will be places i just cant get the por-15 to go with a brush. Is this the right way? Is there a better way? Is por-15 that tough? I'm just curious if this is what everyone else is doing, I see alot of buildup of trucks on here and just wondered what worked well for everyone else. Thanks

glock35ipsc · 06-09-2006, 05:12 PM

Having the frame sandblasted would be a quicker and more thorough way of getting the frame squeeky clean and ready for a lifetime of adhesion.

jamesi20 · 06-09-2006, 08:37 PM

I agree...I had mine sandblasted and it only cost $90.00
For the time it saved me and as clean as they get it was worth every penny

Fred T · 06-09-2006, 09:08 PM

Wire brushing is not recommended for por-15, or any other paint. It's okay for removing loose rust, but the brushing polishes the metal surface, making a surface that paint does not stick to. Using their metal-ready after brushing helps, but following up with coarse sandpaper is recommended.

Biggest thing in getting metal ready for por is to get rid of the dirt, grease and loose rust. They actually recommend leaving the hard rust in place, it gives a rougher surface for the stuff to cling to. Sandblasting is a good prep, it cleans the metal and leaves a rough surface.

Brushing por15 is okay. It's the pits to spray, takes a huge nozzle due to its viscosity. And the fumes go right through a regular paint respirator. Be sure to apply 2 coats at a minimum. And buy some latex gloves. You can use lacquer thinner for clean up, as long as you don't wait too long. The stuff is a first cousing to superglue.

06-09-2006, 04:47 PM	#1
71/454 Turbo Guy Join Date: Jan 2005 Location: Calgary Alberta Posts: 353	Frame painting questions I'm currently in the process of prepping my frame with a wire wheel for por-15. Anyone who has done this i think will agree that the novelty runs out quick. I have a few concerns though, I'm trying to be real thorough so I don't look back on this frame off and say geez i shoulda done the frame better the rust is coming thru. My trouble is this, there are a few places in between the crossmenber and the frame rail I just cant get into and secondly i was planning on brushing the por-15 on because i dont have access to a fresh air respirator, again there will be places i just cant get the por-15 to go with a brush. Is this the right way? Is there a better way? Is por-15 that tough? I'm just curious if this is what everyone else is doing, I see alot of buildup of trucks on here and just wondered what worked well for everyone else. Thanks

06-09-2006, 05:12 PM	#2
glock35ipsc Next project: 1970 K10 Join Date: Feb 2004 Location: Fort Collins, Colo 80524 Posts: 6,685	Re: Frame painting questions Having the frame sandblasted would be a quicker and more thorough way of getting the frame squeeky clean and ready for a lifetime of adhesion. __________________ *Bob* 1970 Chevy K10 LWB "Goldie" 350/TH350 *next project!!* 1981 Chevy C10 LWB 355/TH350 - My son's truck LS SWAP FORUM! Tons of LS swap info here! PLEASE CLICK HERE TO SUPPORT THE GREATEST BOARD ON THE NET! CLICK HERE FOR THE FAQ INDEX by KRUE

06-09-2006, 08:37 PM	#3
jamesi20 Senior Member Join Date: May 2002 Location: NORTHEAST OHIO Posts: 493	Re: Frame painting questions I agree...I had mine sandblasted and it only cost $90.00 For the time it saved me and as clean as they get it was worth every penny

06-09-2006, 09:08 PM	#4
Fred T Cantankerous Geezer Join Date: Aug 2002 Location: Bel Aire, KS Posts: 6,264	Re: Frame painting questions Wire brushing is not recommended for por-15, or any other paint. It's okay for removing loose rust, but the brushing polishes the metal surface, making a surface that paint does not stick to. Using their metal-ready after brushing helps, but following up with coarse sandpaper is recommended. Biggest thing in getting metal ready for por is to get rid of the dirt, grease and loose rust. They actually recommend leaving the hard rust in place, it gives a rougher surface for the stuff to cling to. Sandblasting is a good prep, it cleans the metal and leaves a rough surface. Brushing por15 is okay. It's the pits to spray, takes a huge nozzle due to its viscosity. And the fumes go right through a regular paint respirator. Be sure to apply 2 coats at a minimum. And buy some latex gloves. You can use lacquer thinner for clean up, as long as you don't wait too long. The stuff is a first cousing to superglue. __________________ Fred There is no such thing as too much cam...just not enough engine.



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