Does this happen to anyone else??
I'm filling some panel lines (in a car body) and have tried a few different methds. I used to use putty (Bondo Spot/Glaze), but have been using CA glue instead.
So I've meticulously filled the line with CA, use the accelerator, and then immediately sanded it down flush. I sanded the area very thoroughly and was sure it would be a totally smooth surface. Inspected it very closely and even dragged a toothpick across it to detect any flaws or edges I may have missed.
Then, as soon as I put the primer on, out pops the line!! AAAAAAGGGGGHHHH. What's going on? Is the primer causing the CA to shrink in some way?
BTW, I'm using Duplicolor primer, so maybe that's the problem??
Murray