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I'm done with sanding/wet sanding by hand! Any alternatives?

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  • Member since
    March 2005
Posted by philo426 on Friday, November 20, 2020 10:55 AM

Slight orange peel!

  • Member since
    June 2014
Posted by BrandonK on Friday, November 20, 2020 10:02 AM

By hand is the only way to go. I personally use decanted clear krylon and I wet sand the base coat and clear coat using modeling sanding pads that start at 3200 and go up to 12000 grit. The primer surface must also be super smooth so sand it with 3000 or so dry and then paint. Dont sand the edges or body lines as this will rub through SUPER easy and ruin your paint work. Take your time, sometimes days worth, and slowly work up to finer and finer pads. When you are done you will be very happy with the results. Finish the paint with NOVUS polishing system and you will be stunned at the shine. Good luck and it does take some practice.

BK

This one was wet sand as described.

This one was not wet sanded, only cleared. You can see the orange peel in the paint here.

On the bench:

A lot !! And I mean A LOT!!

2024 Kits on deck / in process / completed   

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  • Member since
    March 2005
Posted by philo426 on Friday, November 20, 2020 7:37 AM

  • Member since
    March 2005
Posted by philo426 on Friday, November 20, 2020 7:27 AM

After about 5 coats,wet sand the body staetibg with 3200 grit and go up to 12000.Then clean it up and give it a thinned coat of body color followed by a good clear coat No prob!

  • Member since
    April 2020
Posted by Eaglecash867 on Friday, November 20, 2020 6:46 AM

I rarely build cars, but I started a new build recently on the same Testors/Fujimi Porsche 911 Turbo that I had built when I was in high school.  I had to bag everything up and set it aside so I could just focus on one model and get my F-16 finished, but so far the painting process is going well.  I'm using Model Master enamels I managed to find through Ebay being sold by little mom and pop shops.  As with all of my other modeling subjects, I give every part a bath in Simple Green, rinse, bath in 99% alcohol, then dry.  Then I use decanted Tamiya Surface Primer (just the regular gray stuff, which lays down nice and smooth when airbrushed), thinned with MEK.  I give the primer at least 2 hours to cure, then paint.  So far, I just have the first coat on, which went on in four passes of the airbrush.  The first pass shows a lot of the primer through it, and with each pass I get closer and closer to the model with the airbrush.  The final pass goes on nice and wet, so its really important to KEEP MOVING.  I'm using the Model Master Enamel thinner because I haven't had good results with other things like lacquer thinner for that (probably just my technique, so YMMV).  After that, I put the whole thing under an upside-down Gladware container and leave it under there for at least 24 hours.  After that its safe to uncover it and let it cure an additional 6 or 7 days and not have to worry about dust getting stuck in the paint.  It will get dust on it still, but it won't stick.  But, definitely don't handle the parts until that full week has passed.  The second and final coat is the wet coat, where the paint is actually mostly thinner.  Again, the most important thing is to keep moving with the airbrush...don't stop, pause, or hover.  Now, I haven't gotten to the wet coat part yet, but aside from the airbrushed Tamiya primer, this is the same technique I used on the one I built in high school.  The first coat was nice and glossy, but after I put the wet coat on, I always hesitated to touch it because it still looked like it was wet...the finish was that smooth and glossy, like glass.

"You can have my illegal fireworks when you pry them from my cold, dead fingers...which are...over there somewhere."

  • Member since
    April 2004
  • From: UK
Posted by Jon_a_its on Friday, November 20, 2020 3:28 AM

ohms

Or maybe I should change my gloss? I use Humbrol Gloss Cote.

 

 
I don't do cars, but I used to do commercial spraying for Norton motorbikes & Jaguar.
 
The key is preparation.
 
Get your target/car body as smooth as possible, key with 0000+ wet & dry or those nail buffing sticks ftom dollar/beauty shops.
 
Then prime with a good auto or lacquer primer. smooth again with 0000+ wet & dryetc.
 
Dust coat, (very light coats, to key the paint), then progessively build up the finish.
 
When you think 'just one more' stop.
 
Allow to harden, 1-7 days, depending on the paint.
 
Consider Hiro Boy automotive finish Paints, formulated for err car models, but it depends what you have available to you.

Then don't sand! Unless you have orange peel or runs like pimples.
 
Consider car finishing compounds, Nova/Novus(?) or T-cut or similar, & polish out.
 
Touch up if necessary. This is a normal part of finishing.
 
Definately bin the Humbrol, it's difficult to spray, will yellow over time, & I had more grief with this this than any other finish.
 
My favourite at the moment is Galleria acrylic, Mat, Satin & Gloss, self leveling, easy to spray, forgiving if you over-cook it.
 
Hiro Boy do a Show 'n' Shine Spray which may suit your needs.
 
 

East Mids Model Club 32nd Annual Show 2nd April 2023

 http://www.eastmidsmodelclub.co.uk/

Don't feed the CM!

 

  • Member since
    May 2020
  • From: South Africa
Posted by ohms on Friday, November 20, 2020 1:14 AM

Or maybe I should change my gloss? I use Humbrol Gloss Cote.

Into model building since September 2019. Also into books (mostly science-fiction), comic books, and gaming.

  • Member since
    May 2020
  • From: South Africa
I'm done with sanding/wet sanding by hand! Any alternatives?
Posted by ohms on Friday, November 20, 2020 12:36 AM

Hi guys,

When I began the hobby last year, it took me a while to get an airbrush, because I believed I wouldn't be a 'serious modeler' without mastering brush painting first. 

It was only when I got so frustrated that I decided to finally buy an airbrush, and I haven't looked back since. I now don't believe an airbrush is a tool you get only when you 'upgrade' to higher level modeling. I say you need it from day one.

A similar problem with my models now is the sanding/wet sanding for the gloss finish. No matter how many YouTube tutorials I've watched, I still can't get my car bodies to look good. Either I don't wet sand and there's a trace of orange peal, or I do wet sand and it looks patchy and scratchy. The YouTube videos are, of course, always welcome, but they practice on convenient, flat surfaces (where you don't have to worry about the edges), and some cars are way more complicated than that.

Like brush painting, I know there's a way to do it right if you want to go the by-hand route, but I'd rather just go with a machine. 

Is there any solution/alternative for this? Can I use a dremel, or another process completely?

This is one of those things where I feel if I don't find a solution, it may turn me off doing shiny objects/cars in the future, and I don't want to limit myself in that way.

Let me know. All advice welcome. Smile

 

Wet sanding tools: Micro Mesh

Current model: Revell Ford Shelby GT-H

 

Into model building since September 2019. Also into books (mostly science-fiction), comic books, and gaming.

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