RE: Plasticized dope mixture
The 2 oz bottles at the Pharmacy are affordable and High grade as intended for internal use. Some, myself included have overlooked this convenient size and not equated the cross applications. It certainly adds longevity to a finish if your model ever lives so long. I never noticed it added to the shine. 4 to 5 running drops per quart of dope. All fish eye reducers, flex agents for painting bumpers etc. all go back to the bean. Any left overs may be added to your fuel depending on your engines requirements. It also plays a part in not allowing the butrate to shrink quite so much over time which also adds to finish life. In the old days of magazines that had the craftsman type modeler in mind they could devote a couple pages to why it should be used. I use a Tom Brown Product called Flex-all. It has a handy container for running drops of what I presume is just the same old bean oil. One container lasts a long time.