Question about painting

[cyclops2]

I just use a softer wire wheel to knock off any loose stuff. Then a Acetone wipe down outdoors with a breeze.
Paint time on the roughed up old paint.

 

[thill]

Just in case anyone else is considering painting bare aluminum I recently used “Raptor Anti-Corrosive Epoxy Primer” inside my Lowe 1860. No etching necessary but it does need a scuffed up surface. I rolled it on vs spraying. Cleaned the surface with acetone prior to rolling. After priming I sprayed “Raptor Protective Coating, Tintable” which requires a hardener and is in essentially a bed liner without the grit. I wanted a lightly textured surface so I set the gun at 50psi and the compressor at 90psi. Only vertical surfaces, console and live well were painted. The weather went south on me so I won’t finish painting the areas around the hatches until this coming spring.

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That looks really good!

 

[Douglasdzaster]

If you have to mix up a bit more than a small batch, use a BIG/WIDE container, like an 8" by 10" foil pan, but still only like 1/2" deep! For if you put that same amount in a 'bucket' to mix it, it will cook off and could set itself on fire or just smoke and cook away! Ask me how I know ...

Yikes!!! I’ll be sticking with small batches when it’s cold out as I went ahead and purchased the cold weather formula. Also the floor is in three sections.
Thanks for the heads up DaleH. Again I appreciate you sharing your knowledge. This is my first time to use epoxy in this manner. I’ve done some small patch work where all I had to worry about was the stuff setting up to fast. I had no idea it could get that hot.
30 years ago when I would splice phone lines we had it in a tube with a divider in the middle. Squeeze the tube to break the divider , shake and cut the bottom off the tube and shove the splice in the burry tube and all after it hardened.
In the winter we would take a couple , break the dividers shake them and put them in our coat pockets to keep our hands warm.

 

[Douglasdzaster]

Just in case anyone else is considering painting bare aluminum I recently used “Raptor Anti-Corrosive Epoxy Primer” inside my Lowe 1860. No etching necessary but it does need a scuffed up surface. I rolled it on vs spraying. Cleaned the surface with acetone prior to rolling. After priming I sprayed “Raptor Protective Coating, Tintable” which requires a hardener and is in essentially a bed liner without the grit. I wanted a lightly textured surface so I set the gun at 50psi and the compressor at 90psi. Only vertical surfaces, console and live well were painted. The weather went south on me so I won’t finish painting the areas around the hatches until this coming spring.

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Looking sharp. Thanks for sharing the information. I’ll be repainting the sides inside and out soon. I’ll have to check out your Raptor idea.
You said it’s a primer. Is it good to go alone or do you have to top it?

 

[Iammichael6499]

Looking sharp. Thanks for sharing the information. I’ll be repainting the sides inside and out soon. I’ll have to check out your Raptor idea.
You said it’s a primer. Is it good to go alone or do you have to top it?

Thanks. I used Raptor primer and Raptor paint. Applied primer with a roller and then sprayed the paint. I would definitely cover the primer.

 

[cyclops2]

Sure looks as good as a brand new $ 32 K boat package boat

 

[kazzer]

I appreciate the reply. I wish I would have seen it sooner. I started the other day.
I had to get pretty aggressive when I removed the old coating and I left the it where I could still see all the sanding scratches planning to paint it down the road.
It would have been easier to hit it with the orbital again. But the Krud Kutter metal clean and etch did get it cleaned.
It was evening and I started putting down the primer and it didn’t want to stick. I’d lay down some with a brush stroke and if I kept brushing to even it out it came off leaving a thin layer that looked splotchy.
Temperature was in the 60’s and humidity was just below the threshold they give you. When it started getting dark I stopped working and started picking up. I grabbed my IR gun and checked the surface temperature and the aluminum was 52 degrees. I had really messed up by painting that evening.
I let it sit most of the day yesterday nice and sunny 70 plus degrees and 45% humidity. I rubbed the thin film with my finger and it didn’t come off. I have some spots where I had left it thicker and they seemed soft. I got some 500 grit sandpaper and sure enough if I sanded to much that thicker area peeled off. I grab the primer and painted it on the rest that had the film. And it went on like it was supposed to and was drying like it was supposed to.
The plan now is to peel off the other area and redo it if the humidity comes back down. It’s cloudy today. I’m hoping the coat I did yesterday is strong.
Other wise I may be getting out the pressure washer and starting over and that’s going to make a mess the admiral won’t like.

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