Roll and Tip- what am I doing wrong

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tloc1000
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Joined: 04 Jan 2019, 14:37

Roll and Tip- what am I doing wrong

Post by tloc1000 » 12 Oct 2019, 10:24

I'm using Rustolium topside paint over self etching primer. I've sanded the primer with 200 sandpaper. When I roll and tip. There are still brush marks in the paint. I'm barely running the brush over the paint. Am I putting too thin a coat on? This is for the 1st coat. Will I need to sand between coats?

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tloc1000
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Roll and Tip- what am I doing wrong

Post by tloc1000 » 12 Oct 2019, 10:26

Am I using the wrong brush?

I'm using a disposable brush from Ace.

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LDUBS
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Roll and Tip- what am I doing wrong

Post by LDUBS » 12 Oct 2019, 13:23

I've never used that kind of paint, but have done a lot on cabinets and woodwork. I can offer that it is important to keep a wet edge. Once the paint starts to dry at all, you are going to see the brush marks. Can't say much about your throw away brush other than I wouldn't use one for a fine finish. I always use a decent brush.
Have Rod - Will Fish

maintenanceguy
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Roll and Tip- what am I doing wrong

Post by maintenanceguy » 12 Oct 2019, 19:25

I don't know Rustoleum top side paint. I have used a lot of the "regular" Rustoleum enamel paint. Check the label on the topside paint to confirm that it can be thinned with acetone. The "regular" Rustoleum allows acetone as a paint thinner. A little acetone makes a big difference in how smoothly the paint flows and thinning the paint a little helps the paint to self-level much better.

And, use a quality brush. The finer bristles will leave a smoother finish.

I also like to use an enamel hardener in Rustoleum paint. Without hardener, Rustoleum can take a long, long time to dry. I have sanded paint several weeks after the painting was done and had the paint gum up my sandpaper. The paint felt dry to the touch but wasn't.

Hardener also leaves a harder finish once it is dry. Hot rod and car restoration guys on a budget often spray with Rustoleum. They thin with acetone and add a hardener. I use Valspar Enamel Hardener. Follow the directions on the can. Works great.

CedarRiverScooter
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Roll and Tip- what am I doing wrong

Post by CedarRiverScooter » 12 Oct 2019, 20:19

Kibitzing here - If you add hardener, wear an activated carbon filter mask, even if brushing.
Hardener is made from isocyanate & is really bad for you.

tloc1000
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Joined: 04 Jan 2019, 14:37

Roll and Tip- what am I doing wrong

Post by tloc1000 » 12 Oct 2019, 20:47

Thanks ! I went to the hardware store and asked the paint Dept what I needed, I bought a fine bristle brush and he too suggested to thin the paint. I thinned and used the fine brush but it seemed to dry really quickly. It was sunny and the tin was getting pretty warm. It was the 1st coat, so I'm going to sand a little and try to thin some more and paint in the morning when it's cooler. It was about 60 this morning so I think that should be perfect.

fyr4efect
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Roll and Tip- what am I doing wrong

Post by fyr4efect » 13 Oct 2019, 19:15

Grizzly Tohatsu 20.jpg
What kind of roller are you using? I did the roll and tip using Epiphanes mono urethane but skipped the tip part. I used a 4" foam roller. Keep the roller wet and overlap the coverage but don't go backward as it drys fast and you will leave lines. By the third coat I got the hang of it. I have not used Rustoleum products. I used 400 grit between coats. Helps hold the paint. I also used a tac cloth after cleaning sanded coats.
2019 grizzly 1448

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LDUBS
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Roll and Tip- what am I doing wrong

Post by LDUBS » 13 Oct 2019, 19:47

Again, I've not used the specific product you are using, but will offer the following. Make sure you are putting enough paint down with the roller before you tip it off. This is not the time for a real light coat. And as Fyr says, one pass with the brush and you are done. Do it while the paint is wet. Don't go back over anything. It should level out pretty well.
Have Rod - Will Fish

tloc1000
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Roll and Tip- what am I doing wrong

Post by tloc1000 » 14 Oct 2019, 08:28

I’m using a 4” foam roller. It turned out better than what i thought. I’ve done 2 coats and have enough paint for a 3rd.

I’ve got my daughter rolling and I’m coming right behind her so it’s not drying as fast.

GTS225
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Roll and Tip- what am I doing wrong

Post by GTS225 » 14 Oct 2019, 09:09

tloc1000 wrote:
12 Oct 2019, 20:47
I thinned and used the fine brush but it seemed to dry really quickly. It was sunny and the tin was getting pretty warm. It was the 1st coat, so I'm going to sand a little and try to thin some more and paint in the morning when it's cooler. It was about 60 this morning so I think that should be perfect.
*******************************************************************************************************************
Get out of the sun. Between the sun, and the already warmed up metal, that's helping the paint dry quicker than you can get on the second step of tipping. Once you have it painted, THEN roll it outside for a drying spell.

Roger

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LDUBS
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Roll and Tip- what am I doing wrong

Post by LDUBS » 14 Oct 2019, 11:16

GTS225 wrote:
14 Oct 2019, 09:09
tloc1000 wrote:
12 Oct 2019, 20:47
I thinned and used the fine brush but it seemed to dry really quickly. It was sunny and the tin was getting pretty warm. It was the 1st coat, so I'm going to sand a little and try to thin some more and paint in the morning when it's cooler. It was about 60 this morning so I think that should be perfect.
*******************************************************************************************************************
Get out of the sun. Between the sun, and the already warmed up metal, that's helping the paint dry quicker than you can get on the second step of tipping. Once you have it painted, THEN roll it outside for a drying spell.

Roger
X2. I think this is really good advice.

I'm not a fan of foam rollers or brushes, but a lot of others like them.
Have Rod - Will Fish

tloc1000
Posts: 24
Joined: 04 Jan 2019, 14:37

Roll and Tip- what am I doing wrong

Post by tloc1000 » 14 Oct 2019, 17:03

GTS225 wrote:
14 Oct 2019, 09:09
tloc1000 wrote:
12 Oct 2019, 20:47
I thinned and used the fine brush but it seemed to dry really quickly. It was sunny and the tin was getting pretty warm. It was the 1st coat, so I'm going to sand a little and try to thin some more and paint in the morning when it's cooler. It was about 60 this morning so I think that should be perfect.
*******************************************************************************************************************
Get out of the sun. Between the sun, and the already warmed up metal, that's helping the paint dry quicker than you can get on the second step of tipping. Once you have it painted, THEN roll it outside for a drying spell.

Roger

I waited until the boat was shaded to put on a second coat. It worked better.

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