I have some Brodak dope and not sure what to make of this problem.

The problem colors are Hawaiian Teal and Caribbean Turquoise.  There may be other colors with this issue but these are the two I have.  These colors have dark granules in them.  They are very small, dark blue or purple.  I tried a sample spraying and these granules, aside from clogging the spray gun, are deposited on the surface.  When smashed or crushed (can't think of better words) they leave a dark blotch or streak.  So, sanding does not remove them without leaving streaks.  These particles do not dissolve when the dope is shaken or stirred.  They stay suspended.

Are these particles part of the tint or pigment?

Filtering removes most of the particles but not all.  I am wondering if the dope is poorly formulated or if there is a way to remove these particles.  I have not seen this with a any other Brodak dope, clear or colors.  Any suggestions?

I have used several filters.  One type from an automotive paint store.  This is a cone shaped paper with a mesh on the bottom.  The other I got from Home Depot.  The Home Depot filter is one of those large filters for the 5 gallon buckets.  It appears to be a finer mesh than the filter from the auto store.  I cut it in pieces and filter the dope thru it.

I have strained the dope several times.  Each time, the filters catch particles but more remain.  Either they are getting thru the mesh or they are somehow coming out of solution.  Does that make any sense?

Might help if you use a paint shaker. It will tend to break up anything in the mix. Then filter.

Jim,
 I have used the Teal and had the same problem, it's in the paint. I also had trouble with the tape pulling up paint, but that could a separate problem. I got the plane finished, finally, but will not use that color again.

Jim how do you like that Randolph thinner?

Hmmm, then my only suggestion is to stay away from purple. It's not very manly anyway.

Manly, girlyman, call it whatever you want, but purple is actually a great color.

Can't remember the Bank, maybe it wasn't a Bank, but they use purple and green in all their commercial medium and their logo.

Works on the Skyfall 007, works for me!

I have some Brodak dope and not sure what to make of this problem.

The problem colors are Hawaiian Teal and Caribbean Turquoise.  There may be other colors with this issue but these are the two I have.  These colors have dark granules in them.  They are very small, dark blue or purple.  I tried a sample spraying and these granules, aside from clogging the spray gun, are deposited on the surface.  When smashed or crushed (can't think of better words) they leave a dark blotch or streak.  So, sanding does not remove them without leaving streaks.  These particles do not dissolve when the dope is shaken or stirred.  They stay suspended.

Are these particles part of the tint or pigment?

Filtering removes most of the particles but not all.  I am wondering if the dope is poorly formulated or if there is a way to remove these particles.  I have not seen this with a any other Brodak dope, clear or colors.  Any suggestions?

Have you contacted Brodak about this problem? If not, I'd do that immediately.

Good, Luck and thanks for the info, Jerry

Dan,

The green tape is a lower tack than the blue. The build up at the edge of the tape is controled by how much paint is applied. This is why it's important to use colors that cover well. You can always spray a test to see.

I used blue and green tape on the Skyfall 007. There are photos.

Full wet coats may not be necessary. Couple of light coats can do the same thing as far as covering.

Interesting because I'll never use color dope. There are other ways.

 I'm currently playing around with aerosol cans.

I've had no tape issues, bleeding, or thick edges using them. I do scratch everything up. BTW. You can sand a paint edge down carefully.

Now I'm playing around with artists acrylic.  I have plenty of experience with this paint.

The Mig-3 will be all artists acrylics.