priming a model for flaws

[qc]

this may be a silly question, but while watching individuals scratchbuild, i noticed that the model was being primed, then additional details would be added OVER the primer. my concern would be the effectiveness of the detail/greeblie adhering to model (the plastic itself, as opposed to the thin layer of paint), especially during the course of making the molds. is this concern unfounded or does it really stick to the model well?

a related concern of priming in the middle stages is the covering of minute details. i don't think it would matter in larger scale models, but speaking in terms of (scratch)building in a smaller scale.

i like/appreciate the use of priming in the middle stages in order to detect flaws in the finish/surface, but am curious about its drawbacks...

thanks on the feedback.

[Stu Pidasso]

Sometimes a modeler has to prime the kit to find flaws. Once they do, then fix them, sometimes you can just strip the primer off and keep building. Like you said, it could all be up to the model. If you have too many fine details, then you can't prime. Once I primed a kit 6 times before I painted.

[TER-OR]

As long as the details aren't huge, and aren't likely to be torqued, I haven't had problems. The primer I usually use is Gunze's Mr. Surfacer 1000.

[Kylwell]

Same here. Usually by the time I'm done filling & sanding there's not a whole lotta primer left.