Airbrush problems

urumomo

Well-Known Member
Joined
Mar 18, 2013
Messages
3,055
You have it so try it .
Some of these acrylics don't do alcohol .
I just test some Vallejo model color with isopropyl alcohol and it makes it coagulate and turn to snot .
Vallejo's thinner and that Golden have no alcohols in them .
That thinner you're using -- even though they say it works with Vallejo -- may be what is causing those blobs .
Heck , thin it with just water and see what you get .
 

Runway

Member
Joined
Jan 3, 2021
Messages
84
Ok i am going to order that thinner to night. Makes sense to use the thinner that matches the paint. Same manufacturer.
 

urumomo

Well-Known Member
Joined
Mar 18, 2013
Messages
3,055
The manufacturers don't need to be the same but the chemistry needs to be compatible .
Give me the SKU number for that Testors thinner so I can pull up the SDS for it .
I forgot how much Testors website sucks
 

urumomo

Well-Known Member
Joined
Mar 18, 2013
Messages
3,055
When I search " thinner " or " universal acrylic thinner " on their site nothing comes up .
So stupid
 

urumomo

Well-Known Member
Joined
Mar 18, 2013
Messages
3,055
That Testors should work .
Mix some in with the Vallejo and see if it stays nice and smooth .
 

Runway

Member
Joined
Jan 3, 2021
Messages
84
Ok. I think i scewed up. The testers worked a little better on practice piece of plastic. But since i have already screwed up the priming part of this model what i am showing you is paint over bad priming job. So i think the damage was already done before the first coat of paint? Sorry for wasting your time. But you showed me alot. TY
 

urumomo

Well-Known Member
Joined
Mar 18, 2013
Messages
3,055
Definitely not a waste of time at all .

If you want to start over you can easily remove all that acrylic including the primer by using isopropyl alcohol .
I use the 91% isopropyl from the drugstore / grocery .
:D I told Beeblebrox here on the site about this years ago and he never hesitates now to remove a bad paintjob or colors he doesn't like and start over .
In fact ,he just did it on the flying car he's working on : https://www.scalemodeladdict.com/threads/hasegawa-vanship.14036/#post-208478

A toothbrush helps
 
Last edited:

Runway

Member
Joined
Jan 3, 2021
Messages
84
WOW. Did not know this. This is a big help. This model i am doing is my first lighted airbrush model. Its a $20 monogram 1/600. So when i build the $89 Revell i dint screw it up.
 

Runway

Member
Joined
Jan 3, 2021
Messages
84
Good morring. Have you ever used a airbrush paint like this. FS 35526. It's an acrylic and lacquer base. It was the Studio color for Voyager. But could not get it to flow. Dose this mean i have to thin with lacquer?
 

urumomo

Well-Known Member
Joined
Mar 18, 2013
Messages
3,055
Good stuff .
Best to thin with their Real Colors High Compatibility Thinner , which is alcohol base with retarder ( propylene glycol )
Tamiya's X-20A thinner , and their paints , are compatible in their chemistry , both being lacquer acrylics .

I've never tried lacquer thinner with it .
Lacquer thinners vary bigtime by manufacturer and modern versions like those sold at general hardware or big-box stores have become mostly acetone / methanol mixtures with little to no other volatiles and solvents like butyl acetate .
You'd need to go to a paint supply if you need a particular solvent profile .

You can try some lacquer thinner if you have it on hand and see how the paint performs . On scrap of course .
I know people use regular lacquer thinner with the Tamiya paints .

That AK Real Colors requires very little thinning , and I can spray it without thinning with a . 65 mm spray tip .
But , I always put a couple drops of their thinner in .

Denatured alcohol would probably work too . ( methanol / ethanol )
 

Latest posts

Top