G'day folks,
 A while back I posted a few questions in regards to dope types. 

 The other day a mate ordered a gallon of Randolph thinner to compliment the Randolph butyrate dope he is about to use. Instead of sending him the thinner they sent him shrinking nitrate dope. I bought the dope off him as he believes 2 gallons will probably outlast his grand children.

 I was wondering what specific tasks it will be suited to?

 I know some guys use shrinking nitrate for open bays and non shrinking nitrate on balsa as a primary sustrate before moving to butyrate for colour coats and finish.

 Can I use it without major dramas for the entire substrate and grainfiller?

I intend to use grey acrylic primer and go straight to 2-pack base coat and clear as coloured dopes are not available here.

 I have found it hard to get motivated on building for a while because the only easily available type of dope is rubbish and I want to get a couple of planes finished to a decent standard before starting on a couple of new projects.

 Any thoughts would be really appreciated. Thanks in advance.

 Rob.

  Thanks Lou.
 I had heard about the castor in the dope trick, I knew it took some of the brittleness out of the finish but wasn't aware that it could also reduce the shrinking power.

 I will try contacting Dave Brown products and Brodaks and if that proves difficult as far as hazmat goes then I will try the old castor in the dope trick.

 Thanks again, Rob.

  Hi Bill,
 Just found out that one of the blokes I fly with here has been using Randolph shrinking nitrate for a while without problems. Just thins it 50/50.

 I went to see the better (service wise) local auto paint shop about some flex additive yesterday.
Like you said, It's expensive. About $66 for 500ml.

  One of the better local builders here uses the same dope but adds a few drops of castor to his last couple of coats before going to primer and then 2-pack auto colours/ clear. His models last for years.

 I will try this on my latest creation and see how things pan out.

 Thanks again, Rob.

DANG!!!!..............you're talking about paint.