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Painting Help!

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DDD
  • Member since
    March, 2019
Painting Help!
Posted by DDD on Tuesday, May 07, 2019 6:24 PM

Thanks Viperdoug, Bainford and 195X for your primer help Mr. Surfacer works really well. Now I've painted it using Model Master Acrylic Gl. Blk. I've sprayed 2 lightcoats and the 2 a little bit heavier coats and I noticed it look a little rough sort of like sand paper I beliveve the paint is drying before it hits the model how do I fix that? I'm approx 3" away spraying at 20 psi and have thinned it 50/50 with Aztec thinner not sure how to fix that issue, also there are airbrush streaks on top where you can see where I went back in forth with the airbrush gun! Why? Now do I stop and wet sand it and then spray acouple more coats or do I spray it now a couple more coats then wet sand it? Also does anyone have anybodys web-site that has good tutorials how to fix different problems when painting? I see alot of how to paint, but it seems my jobs has issues and can't figure what Ive done wrong and how to correct them. Thanks

  • Member since
    April, 2019
Posted by Uncle Billiam on Tuesday, May 07, 2019 6:25 PM
Have you tried looking up Dr Cranky on You-Tube?

On the bench: 77 Pontiac Trans AM Somkey and the Bandit, 69 Dodge Daytona Superbird, Jolly Roger Ship Tamiya Ford GT40, 67 Mustang fastback. 69 Dodge Charger. See my work here https://photos.app.goo.gl/QCSGAYV9MXvJvZwJ6

  • Member since
    January, 2017
Posted by 195X on Tuesday, May 07, 2019 7:37 PM

First off, take Billiam's advice and look up Dr. Cranky, he's AWESOME!

secondly, all the issues you're describing come in two packages. Your pressure is too high and you're a tad too close. 

Try this: Forget all about 50/50 mixes and that. Use whatever you're mixing with as your gage. If it helps, have a shot glass of whole milk nearby. You want the exact same consistency. With practice you'll get consistent. (See what I did there?) Please be sure to use a different tool to check the milk consistency.

Once you have your milky paint, back your psi off to about 12. Now go grab some plastic spoons. White ones are my preference as they'll give you a good look at your base color. Try the 12 pounds from about six inches away. As with any painting, make sure your spray paths overlap. Remember there's a learning curve. That's why the pressure and flow are adjustable. :)

The rough spot IS likely the paint drying on the way. Too high pressure. Airbrush streaks. Too high pressure, too close. Stop now and wet sand. Start spraying again.

Starting out with an airbrush takes two things. Patience and desire. Anyone can do it but if you're new, waste a little paint and some plastic spoons and go through those learning curves. It's well worth the effort. Good luck. Hope to see your builds soon. :)

My favorite color is clear. I am also ambidexterous, I can screw up equally well with either hand. I am 53 years old and been building for most of that time. :)

On the bench... somewhere. Pink Panther show car, 1978 Dodge Magnum Charger Daytona Midnight edition SE 300. Mongrel T.

DDD
  • Member since
    March, 2019
Posted by DDD on Tuesday, May 07, 2019 8:59 PM

I watched him, Don Yost and 5 or six others but the problem is when you make a mistake I'm not sure what the problem was and can't find that video to explain my issues like too close. too far away, to thick to thin,to high PSI or to low, etc.. It is funny I practiced a lot on spoons and did great and thought I had everything down then painted the body and wham *** happened!! I belive I have the right consistency just the wrong technique. That's why I keep throwing these ?'s out. It's funny I noticed that people ask for help and get 50 to 100+ views but only a couple replys and seems that only a hand full of the same guys like yourself (195X) give advice which I really appreciate I thought there would be a lot more responses thru this forum. But thanks to 195X, Viperdoug, Bainford for some great help so far.

  • Member since
    January, 2017
Posted by 195X on Tuesday, May 07, 2019 9:53 PM

DDD

I watched him, Don Yost and 5 or six others but the problem is when you make a mistake I'm not sure what the problem was and can't find that video to explain my issues like too close. too far away, to thick to thin,to high PSI or to low, etc.. It is funny I practiced a lot on spoons and did great and thought I had everything down then painted the body and wham *** happened!! I belive I have the right consistency just the wrong technique. That's why I keep throwing these ?'s out. It's funny I noticed that people ask for help and get 50 to 100+ views but only a couple replys and seems that only a hand full of the same guys like yourself (195X) give advice which I really appreciate I thought there would be a lot more responses thru this forum. But thanks to 195X, Viperdoug, Bainford for some great help so far.

 

Ah! The reason is the season my riend. Spring is here and attendance on online forums is low. just the nature of the ebb and flow. Your suggestions will grow as folks stop by during the next... few... months.

I have been exactly where you are way more than a few times! Suffice to say I really should have kept all those SPOONS! I bet it would have made one helluva collection. But foresight and hindsight right?

Let me ask you a couple questions. How comfortable are you with the air brush in your hand and it's "action"?

What kind of hose are you using and how long is it? Compressor? Are you using a water trap?

What is your paint environment? And I know, this might sound like a ridiculous question but... I've seen this before, is there a cieling fan in operation where you've been painting? Are you using any kind of spray booth?

Before I forget again, remember you can't typically use the AB like you would a spray can. They don't do tilting very well, especially if you're using a cup and not a bottle. Again, no need to ask me how I know, just be happy the research on that is done for you. ;)

My favorite color is clear. I am also ambidexterous, I can screw up equally well with either hand. I am 53 years old and been building for most of that time. :)

On the bench... somewhere. Pink Panther show car, 1978 Dodge Magnum Charger Daytona Midnight edition SE 300. Mongrel T.

  • Member since
    April, 2019
  • From: Montreal, Canada
Posted by Rockgarden on Wednesday, May 08, 2019 1:24 AM

DDD

It's funny I noticed that people ask for help and get 50 to 100+ views but only a couple replys and seems that only a hand full of the same guys...  give advice which I really appreciate I thought there would be a lot more responses thru this forum. 

Well, perhaps most of us know that there are only a select few who are truly suited to answering the questions, but we also want to learn what we can from seeing the answers?   That, and frankly for myself all I could have offered you was the spoon thing, already covered so you know,  probably best if I don't say too much... 

DDD
  • Member since
    March, 2019
Posted by DDD on Wednesday, May 08, 2019 9:46 AM

To answer your ?'s 195X a 20x20x18 spray booth with filter and exhaust fan. spraying in a garage no cieling fan. Comp. and AB is a master with seperate air tank with air trap 6' braided hose and .5 needle. I know the AB is not top notch, but it will have to do for now. upper 60's to low 70's. I believe it is my technique and with practice and understanding when a issue appears how and what caused it. Any and all advice is appreciated, thanks 195X.

  • Member since
    January, 2017
Posted by 195X on Wednesday, May 08, 2019 1:37 PM

An AB is a mechanical thing. The only real difference in "quality" is how often parts have to be replaced. Looks like your using plenty of weighted hose so that's not in the way.

Being in the garage may have something to do with it depending on your environment. Humidity levels can really mess with most paints but I admit most of my experience with acrylics is limited.

However, I'm still of the mind (like yourself) that it comes down to a need for practice. Keeping in mind you just switched from something you're used to, to something you're not. Always a learning curve there. You'll get it down in no time I'm sure. Now show us those spoon... uh, builds! :)

My favorite color is clear. I am also ambidexterous, I can screw up equally well with either hand. I am 53 years old and been building for most of that time. :)

On the bench... somewhere. Pink Panther show car, 1978 Dodge Magnum Charger Daytona Midnight edition SE 300. Mongrel T.

  • Member since
    January, 2018
Posted by Viperdoug on Thursday, May 09, 2019 4:32 PM

DDD

Like what has been said you are spraying to close for painting a body. I spray around 5-6 inches away.  Also make sure you have opened the spray to get a large fan.  You may want to add a little more thinner for your last 2 coats. Now the hard part, you need to spray and get a nice wet gloss look with out runs ( thats the hard part!).  I myself spray around 25-30 psi, but thats what works for  the way I spray and thin my paint, also it does depend on your brush.  BTW its almost impossible to have no orange peel when painting a large item like a body.  This is why most great paint jobs you see are wet sanded then clear coated and then polished. I think I said this but this is why I like spraying lacquer paints because I feel they lay down better and they dry quick so you can sand between coats without waiting a long time, then I clear with 2k.  One last thing you will have to practice and try different settings and thinners, I got my first airbrush around 1972 and I still am learning.

  • Member since
    January, 2018
Posted by Viperdoug on Thursday, May 09, 2019 4:39 PM

DDD

I forgot to add to my post, look up Gravity Colors with David Thibodeau on you-tube and watch him paint his cars.  I know its lacquer but I paint very much like he shows and it works for me.   Good luck

DDD
  • Member since
    March, 2019
Posted by DDD on Thursday, May 09, 2019 9:08 PM

Thanks 195X and Viperdoug for the tips I will try them out and I'll keep practicing and maybe try using enamel. I wonder if my master AB is just crap? I'll start spraying and sometimes after a couple passes after cleaning the tip it will spit out 3 or 4 bigger balls of paint when I was practicing on spoons today and then look at the tip it was clean so I'll need to figure out that issue. I also will check out Davids you tube video. Thanks again.

  • Member since
    January, 2018
Posted by Viperdoug on Thursday, May 09, 2019 10:25 PM

Sounds like you have some dry build up in your AB.  After every time I am done painting no matter which type of paint I spray I always run lacquer thinner through it.  You may need to do a full cleaning of the brush.  I do a full cleaning about every 2 weeks.  Get some small dental brushes for cleaning the small passages, I like DenTek brand.

DDD
  • Member since
    March, 2019
Posted by DDD on Thursday, May 09, 2019 11:44 PM
I took it apart and cleaned it good and ran airbrush cleaner thru it before using it. I tried going test patterns on paper with air pressure as low as 5psi and high as 30psi and different paint flows and never could get a simple dot without a grainy border kinda looks like a spatter even tried a different paint. I'll keep practicing until I figure it out. Thanks for the tips.
 
  • Member since
    December, 2013
Posted by czech39 on Monday, May 20, 2019 2:42 PM

Keep the comments coming guys! I just started using an airbrush and seem to have the same issue. I do not know if its my technique or just the paint, its like it has a really fine texture. Now do i sand and do color again, or sand and then clear, or just clear then sand an polish.

 

DDD
  • Member since
    March, 2019
Posted by DDD on Monday, May 20, 2019 8:56 PM

I here ya Czech39, I've stripped and re painted 2 times already. My issue is when you make a mistake I'm not sure what the problem was 2 close, 2 far away, 2 much pressure, not enough pressure, 2 thin, not thin enough. After priming and sanding and you see fine sanding marks will the paint cover it up or do you have to get the primer a solid look like when you 1st sprayed it on? 2 answer your ? the best I can is if you have a rough surface your are probably spraying at 2 high of a pressure and possibly you have the gun 2 far away from the model I would sand it smooth, becuase one thing I've found out is if you don't spray on a smooth surface you will have issues. I'm spraying Mr. surfacer 1200 I thinned it 50/50 and was having troubles so I turned down the pressure as low as I could go without it spitting I also practiced on 20 spoons 1st. and I seem to be a pro at spoons but when it comes to spraying the model murphy happens. I wish there were videos like if you spray with 2 high of preesure heres what happens and here is how to fix it or bad airbrushing mistakes and a close up of the paint to see what it looks like and how to correct the issue. Good luck.

  • Member since
    December, 2013
Posted by czech39 on Tuesday, May 21, 2019 3:07 PM

I am using pre thinned zero paints or splash paints, so I don't think that is the issue. I was spraying at 20-25 PSI which is within the manufacturer recommended range. So it makes me think that it is my technique. I feel like Wily E. Coyote, back to the drawing board

 

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