mold line frustration

[Sixx]

Hey everyone!

I'm having a hard time removing mold lines. The way I'm dealing with them at this point is

* I'm sanding them down with 220 grit then 320 then 500 then 800 then 1000 grit sand paper

* then I'm shooting duplicolor filler primer

* then two coats of tamiya primer

If I'm not VERY careful at feathering out my sanding marks with the next level of sand paper, and if I leave scratches then it looks horrible when I shoot the paint particularly thinned down automotive metallics. they leave what looks like burn marks and then the mold lines turn out looking like trenches.

Then the mold lines show up again also.

It is difficult to maintain the body character lines and get rid of the mold lines at the same time.

Am I using too heavy a grit of sand paper to start?

Also, does the plastic make a difference, I'm having a problem with Lindbergs Chrysler Atlantic. First it's molded in a champgane metallic (yuck) then I'm wondering if it's the type of plastic. I shouldn't be seeing any mold lines after all that sanding and tamiya priming???? what gives??

They show up particularly with thinned down automotive, decanted tamiya sprayed through an airbrush and they are even worse with metallics.

What are the tricks for getting rid of mold lines without sanding them and taking the risk of leaving sanding scratches and then have to scrap the bodies?

thanks for your help

[crazyjim]

As I understand it, after sanding you're supposed to put on a coat of liquid glue before priming. Does something to the plastic. I believe Mr. Obsessive posted this tip and more recently BluesmanMark.

I wonder if after priming, would a coat of Future work?

Edited October 19, 2010 by crazyjim

[Sixx]

As I understand it, after sanding you're supposed to put on a coat of liquid glue before priming. Does something to the plastic. I believe Mr. Obsessive posted this tip and more recently BluesmanMark.

I wonder if after priming, would a coat of Future work?

both are very good points,Jim, in fact in my research for an answer, that's exactly what I discovered so far. I think model companies should try to mold em near door lines and such, just a thought if you're listening Revell, AMT, Tamiya.......LOL