Hi, this is my first time posting as a new member of this community. I am returning to art after some years of not doing any work. I often had the unfortunate experience where after completely covering a surface with acrylics these dull shreaks would appear after the paint has dried. They are seen when viewed from a certain angle creating a finish that is not uniform. Even when the paint is mixed with acrylic medium the problem persists somewhat. Does anyone have an answer to this problem? I will be grateful for any assistance. Thanks in advance.

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Hi Calvin.... There are several possible causes of this problem...
- Some colors will go dull when mixed or are painted over another color. - Yellow hues in particular.
- Using tap water to thin the acrylics - (NEVER use tap water... too many chemicals added... use distilled water)
- Re-working previously painted areas - the drying or dry acrylics have lost most of their water content, the remaining polymers will sometimes react badly to the new paint.

Some colors also flatten, or go dull, when reducer or a drying retarder is added,

I paint on canvas, using acrylics, and these dull areas appear now and then. I wait until the entire painting is finished and completely dry (24 hours usually) and then I spray a matt or satin clear over the entire painting.
I apply this in light coats.. spray a coat, wait a minute or two and then spray another light coat... I usually apply about 5 light coats.

This will even out the dull and normal areas in the painting and, as an added bonus, it will "pop" the normally flat appearance that acrylic colors have when dry.

Like all things new, try these suggestions on a test piece first...

I hope that all made sense...

Cheers- Dallas

Hi Mr.Nyberg, I just got the entire message the first time you replied. Very interesting, I have been researching  this problem for years before trying the internet. I'm very grateful for your response. When creating thin gazes of colour on canvases do you have problems with the weave of the canvas spoiling the effect? Some have recommended switching to a smooth surface. How do you deal with this? Thanks again. Good bye.

Hi Calvin.. You can call me Dallas, by the way...:-)
I use regular weave canvases, these come already gessoed,  but I apply five or six more layers of gesso to smooth them out. ......Or however many coats I need to get them smooth.
I use an airbrush to render a lot of my paintings, so the surface needs to be smooth...

A cheaper, and just as good, alternative to gesso, is flat white acrylic undercoat.... the paint used by house painters and decorators.
It's a little bit thicker than gesso and usually requires less coats to get a smoother finish on the canvas.

Cheers - Dallas



Calvin S.Clarke said:

Hi Mr.Nyberg, I just got the entire message the first time you replied. Very interesting, I have been researching  this problem for years before trying the internet. I'm very grateful for your response. When creating thin gazes of colour on canvases do you have problems with the weave of the canvas spoiling the effect? Some have recommended switching to a smooth surface. How do you deal with this? Thanks again. Good bye.

Thanks to Calvin, asking the question and thanks to Dallas for answering!!! Now I also find a solution to my problem!!!!
 
Dallas Nyberg said:

Hi Calvin.. You can call me Dallas, by the way...:-)
I use regular weave canvases, these come already gessoed,  but I apply five or six more layers of gesso to smooth them out. ......Or however many coats I need to get them smooth.
I use an airbrush to render a lot of my paintings, so the surface needs to be smooth...

A cheaper, and just as good, alternative to gesso, is flat white acrylic undercoat.... the paint used by house painters and decorators.
It's a little bit thicker than gesso and usually requires less coats to get a smoother finish on the canvas.

Cheers - Dallas



Calvin S.Clarke said:

Hi Mr.Nyberg, I just got the entire message the first time you replied. Very interesting, I have been researching  this problem for years before trying the internet. I'm very grateful for your response. When creating thin gazes of colour on canvases do you have problems with the weave of the canvas spoiling the effect? Some have recommended switching to a smooth surface. How do you deal with this? Thanks again. Good bye.

Wow!  Thank you for the great information!

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