1975 Spitfire

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Re: 1975 Spitfire

Post by superdave on February 12th 2012, 8:59 pm

After coat #4.



I wet sanded today, again with 600. It was about 42 degrees today, so my fingers are just beginning to thaw out. I don't see any way that this is going to work without spraying the final coat or two. I am going to roll on 2 more and sand with 800 to see where I am. I'll make a decision after that on the finish.

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Re: 1975 Spitfire

Post by snafu on February 13th 2012, 10:38 am

You're making good progress!

Have you tried Penetrol? Its supposed to help the paint flow and I'm wondering if it might help with the roller marks you're getting. Maybe someone who's used it can comment.

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Re: 1975 Spitfire

Post by superdave on February 13th 2012, 12:37 pm

snafu wrote:You're making good progress!

Have you tried Penetrol? Its supposed to help the paint flow and I'm wondering if it might help with the roller marks you're getting. Maybe someone who's used it can comment.

Penetrol may go in for the next coats. I don't see what it can hurt.

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Re: 1975 Spitfire

Post by superdave on February 14th 2012, 12:36 am

Found a can of Penetrol at the local hardware store today. I mixed my paint as I had done before and added about 3 ounces (10%) of Penetrol. The paint was quite a bit thinner and laid out very flat. I'm curious to see the results tomorrow after it dries.

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Re: 1975 Spitfire

Post by rmdhokie on February 14th 2012, 7:45 am

superdave wrote:Found a can of Penetrol at the local hardware store today. I mixed my paint as I had done before and added about 3 ounces (10%) of Penetrol. The paint was quite a bit thinner and laid out very flat. I'm curious to see the results tomorrow after it dries.

I'm a big fan of penetrol. It worked great for me.

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Re: 1975 Spitfire

Post by superdave on February 14th 2012, 9:45 am

I checked it out this morning and it seems to be much smoother than before, but it's either drying much slower or with more gloss (remember, this is a low gloss finish). I used a little less hardener this time along with the Penetrol.

Does the Penetrol lengthen the drying time?

edit: I see by doing some simple searches on Google that Penetrol does increase drying time. I wonder how it affects the hardener?

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Re: 1975 Spitfire

Post by rmdhokie on February 14th 2012, 1:53 pm

Well, from my understanding paint hardener reduces dry time, penetrol extends dry time....gives more time for paint to flatten out and reduce roller marks. I think using both together defeats each product's usefulness.

I did not use hardnener, just penetrol. Not saying it's right or wrong either way, just what worked for me. I wanted to maximize the paint's ability flow out smooth.


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Re: 1975 Spitfire

Post by leeready on February 14th 2012, 2:00 pm

I going to try and use penetrol now. Thanks for the tip. Smile I stop getting roller marks when I switched to rusto topside though.

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Re: 1975 Spitfire

Post by superdave on February 14th 2012, 4:31 pm

rmdhokie wrote:Well, from my understanding paint hardener reduces dry time, penetrol extends dry time....gives more time for paint to flatten out and reduce roller marks. I think using both together defeats each product's usefulness.

I did not use hardnener, just penetrol. Not saying it's right or wrong either way, just what worked for me. I wanted to maximize the paint's ability flow out smooth.


The Penetrol definitely makes the paint lay out smoother. It also is making the paint dry with a gloss. Since I was looking for a satin finish, makes this harder. I may consider all I've done up to now an extensive primer job and end up with a glossy finish after all.

Maybe the Safety Red or Hunter Green was the correct choice to begin with. It's certainly not too late, but after 5 coats of satin black, now is the time to change if I have to.

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Re: 1975 Spitfire

Post by snafu on February 14th 2012, 6:12 pm

I think your idea to spray the last two coats would work.


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Re: 1975 Spitfire

Post by rick howe on February 14th 2012, 9:14 pm

Dave i used the safety red with 1qt paint 1pt med reducer 1pt mineral and this flowed smooth and dried fast ; i all used the hair dryer set on low cool never had to tip the paint but i did use a little hardener on the last 2 coats and it worked out great.

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Re: 1975 Spitfire

Post by Noah Zarq on February 15th 2012, 11:53 am

snafu wrote:I think your idea to spray the last two coats would work.

Think this is the winning final coat choice. Rolling semigloss only gets you so far, and if everything goes well it flows out. But I sprayed my son's Nissan and it laid flat and smooth. I wouldn't give up just yet. Penetrol works fantastic on gloss paint though.

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Re: 1975 Spitfire

Post by leeready on February 15th 2012, 1:04 pm

superdave wrote:I don't have a compressor large enough to spray and I can't do that anyway in my attached garage without a divorce being involved.

I don't think he will be spraying it. argue

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Re: 1975 Spitfire

Post by rick howe on February 15th 2012, 7:06 pm

Hey Dave throw out the spray gun if you don't have a dust free booth pick up the roller and keep the faith this is more work but worth it.

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Re: 1975 Spitfire

Post by 63Falconconvert on February 15th 2012, 7:43 pm

rolling a flat or matt finish is very difficult. For us that are going for gloss we can wet sand and buff for our final finish but Dave really doesn't have that option. Try rolling 1 panel with a mix of Penetrol and while it's still wet "dust" in with a spray bomb of flat black or semi black. It may help with the flow and "degloss" your final coat. Just throwing in a thought.
Your car looks fantastic.

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Re: 1975 Spitfire

Post by superdave on February 15th 2012, 8:01 pm

Thanks for the input guys, but the decision has been made to go red. I really want to be able to finish this with the roller and I was starting to second guess my choice anyway. I think the satin black sinister look really works better on a larger car. The easy thing would have been to go with gloss black, but every flaw shows in that.

I rolled the first coat of Massey Ferguson Red last night. I rolled the satin black over black primer, so it was a shocker to see just how thin the paint was with a color change. I found that I got the best results by rolling an entire panel and then to grab the hair dryer. I kept rolling the semi dry roller over the paint with the hair dryer right behind it, popping bubbles.

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Re: 1975 Spitfire

Post by wantajav on February 15th 2012, 8:30 pm

Yeah Red is a thin color even when spray painting. Don't sweat that go for even coverage, might take 10-12 coats instead of 6 for white but it will be well worth it!

Great job so far

Mike

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Re: 1975 Spitfire

Post by superdave on February 17th 2012, 11:30 am

I got the second coat of the red done yesterday. It's Massey Ferguson Red from Tractor Supply. It looks orange now, but should get more red as I add more coats...I think. I pushed it out of the garage today to get a good look. I'll wetsand tomorrow morning and should get coat number 3 done tomorrow afternoon. I think the coverage is pretty good with only 2 coats.




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Re: 1975 Spitfire

Post by leeready on February 17th 2012, 12:21 pm

Looks good in red. What's your mixture now? If not the same.

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Re: 1975 Spitfire

Post by superdave on February 17th 2012, 12:46 pm

leeready wrote:Looks good in red. What's your mixture now? If not the same.

Started with 12 oz paint, 10 oz thinner, and 2 oz Penetrol. That was a little too thin, so I added a couple more oz of paint.

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Re: 1975 Spitfire

Post by rick howe on February 17th 2012, 3:52 pm

Dave the paint lays down better when thin and don't forget to sand out the orange peel after each coat so in the end you shouldn't have any orange peel. rick

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Re: 1975 Spitfire

Post by leeready on February 17th 2012, 4:09 pm

You mean every other coat, right? Smile

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Re: 1975 Spitfire

Post by rick howe on February 17th 2012, 4:20 pm

No Lee i sanded each coat and wound up putting 8 coats on my spitfire and i used 50% paint 25% PPG med reducer and 25% mineral spirits ; i won't put on paint without sanding first i don't want any chance of the paint lifting down the road.

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Re: 1975 Spitfire

Post by leeready on February 17th 2012, 4:27 pm

Makes sense. It's a lot more work though. What I did even when I didn't have orange peel is do a quick wet sand with 1000 grit for it to stick. I think it would anyway, but just to make sure. That's what I've been doing on my suburban I'm working on...it's been a slow process.

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Re: 1975 Spitfire

Post by rick howe on February 17th 2012, 5:12 pm

slow yes but in the end well worth it ; i painted for 8 straight days and then let the paint sit untouched for 3 weeks before sanding and compounding or waxing and to this day it looks just like it has since it was finished ; it shines great and i can tell people yes i did it with a roller. cheers

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Re: 1975 Spitfire

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