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72 Frame Painting

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Old Feb 17, 2008 | 08:21 PM
  #1  
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Default 72 Frame Painting

Started sand blasting the frame this weekend. It was in excellent shape with only surface rust. I will finish blasting the frame this week, and paint next weekend.

I bought a 3 foot flexible wand that has a nozzle with a 360 degree spray pattern, so I should be able to paint inside the frame rails with a rust preventative paint. I will be using Chassis Black primer and paint from Eastwood for the outside of the frame, and had thought about using POR-15 to paint inside the frame rails. Would POR-15 be good to paint inside the frame or is there something else that would be better? What is the consistency of the POR-15 in the quart-sized cans, and if too thick, can it be thinned out?

Thanks in advance for any help.

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Old Feb 17, 2008 | 08:29 PM
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Nice job on the frame!
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Old Feb 17, 2008 | 08:43 PM
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The frame looks great. I ended up having my frame powdercoated and it to had only surface rust in a few small areas. I was going to use Eastwood chassis black and it's primer, but I used it on some of the suspension pieces and it did not seem that it would hold up well. I'm sure you didn't want to hear that, but maybe try it on some other parts first and see how easy it scratches etc before you do the frame. I bought some stuff from JC Whitney with a long spray nozzle to spray into the frame rails but didn't think it was necessary after the powder coat.
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Old Feb 17, 2008 | 08:54 PM
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Your frame looks great.....nice job. I can tell that car didn't come from up north.

POR 15 can be thinned for spraying. You have to use their special thinner, I believe. I think it would work pretty well on the inside of the frame rails. Might be overkill, but since you have gone this far, why not be safe than sorry?

Can you post a pic of your spray wand set-up? I'm in the middle of the repairs on my bare frame (rust repairs! ) and I want to coat the inside too. I'm going to do a phosphate wash than coat it with POR or Rust Bullet. I haven't figured out how to get the paint on the inside.
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Old Feb 17, 2008 | 10:50 PM
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When spraying the inside rails with the wand. You may have to thin the por a little. But put some card board down because the por will run down through the seams and onto your floor......... Don't ask why
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Old Feb 18, 2008 | 09:51 AM
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I did my frame up in red;

http://www.cardomain.com/ride/2658106/2

Scroll down that page. I can't past images here for some reason. I wanted to do powder coat, but figured by the time the frame needs work, I'll be pushing up daiseys and it'll be someone elses problem. So I went a less expensive route.
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Old Feb 18, 2008 | 07:06 PM
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Originally Posted by CTVETTE78
Your frame looks great.....nice job. I can tell that car didn't come from up north.

POR 15 can be thinned for spraying. You have to use their special thinner, I believe. I think it would work pretty well on the inside of the frame rails. Might be overkill, but since you have gone this far, why not be safe than sorry?

Can you post a pic of your spray wand set-up? I'm in the middle of the repairs on my bare frame (rust repairs! ) and I want to coat the inside too. I'm going to do a phosphate wash than coat it with POR or Rust Bullet. I haven't figured out how to get the paint on the inside.
The spray wand is 3M 08991, and I ordered online from repaintsupply. I will post this weekend on how it works. If it works OK, you are welcome to use it.
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Old Feb 18, 2008 | 08:53 PM
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Want to sell that frame. I need one and I see it's a 4 speed.
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Old Feb 19, 2008 | 10:29 AM
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Originally Posted by robbinhood
The spray wand is 3M 08991, and I ordered online from repaintsupply. I will post this weekend on how it works. If it works OK, you are welcome to use it.
Thanks! That's a generous offer.

I'll look forward to reading about your progress on the frame.
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Old Feb 19, 2008 | 03:06 PM
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Is it hard to get the sand out of the frame? Can you tip it a certain way and vac it out?
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Old Feb 19, 2008 | 03:38 PM
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Originally Posted by MNgraugruen
Is it hard to get the sand out of the frame? Can you tip it a certain way and vac it out?
I found that just blowing it out with compressed air did a fine job.
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Old Feb 19, 2008 | 03:53 PM
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Originally Posted by CTVETTE78
I found that just blowing it out with compressed air did a fine job.
Yep, that's what I did. I got myself an air blower with and extension and blew out the entire frame...took about an hour with all the rust and stuff. Go around the frame with a hammer an tap the sides of all the metal - any flakes of loose rust on the inside of the rails will fall off and then can be blown out with compressed air. I hate sandblasting...it goes everywhere, no matter what you do!
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Old Feb 19, 2008 | 09:35 PM
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Originally Posted by stinger12
Yep, that's what I did. I got myself an air blower with and extension and blew out the entire frame...took about an hour with all the rust and stuff. Go around the frame with a hammer an tap the sides of all the metal - any flakes of loose rust on the inside of the rails will fall off and then can be blown out with compressed air. I hate sandblasting...it goes everywhere, no matter what you do!
I used compressed air to blow most of the stuff to one end. I then cut an aluminum can in half and drilled a 1/4" hole in the end, threaded in a hose connector and attached a 3' section of fuel line. I duct taped the can to the hose on my shop vac. The fuel line fits in the access/drain holes and I could run it up and down the length of the frame. It would clog frequently, but I got all of the rust flakes, mouse leftovers, and dirt. Home Depot probably sells an adapter to connect a small hose to the shop vac, but I like the McGyver like feeling of making this stuff myself.

The sand blasting does make a Hell of a mess, but it takes it down to bare metal in no time and leaves a good surface for painting.
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Old Feb 22, 2008 | 10:40 PM
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You've got the part number wrong. It's actually 3M 8998.
Please post how this works.
I assume that you need to use this with compressed air.
What's the red thing for. Do you put the paint in there?
Steve L.
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Old Apr 28, 2008 | 11:13 AM
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I tried out this wand the weekend with POR15. It doesn't work without the following modifications:

Turn up the pressure a lot - the wand says max 45psi, but I ran it at 100psi at the tank with a 20 ft hose, so it lost pressure along the way but I don't know what it was at the wand.

Cut the wand length in half, and discard the threaded end. Re-insert the threaded adapter.

Thin down the POR15 a lot. POR15 site says a max thinning of 5%, but I had to thin it down way more than that. I don't know what thinning more than 5% actually does?

That got it going decently. The tip of the wand sprays forwards and to the side.

You have to have a Shultz underbody oil gun and also a can that fits the gun. I had to buy a can of what looks like auto transmission underspray, just to get the can.

Steve L.
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