Hello

When sanding a seam with a fine gap the plastic dust? fills the gap,can painting seal the gap or do i still need to use a filler?

There will most likely still be a slight seam. Clean off the dust and brush on a little paint/primer to check.

Kimmo

You can fill narrow gaps with white glue. Just don't sand it, afterwards.

Or white out

Mr Surfacer 500 in the jar

I have white glue,why no sand?

The bulk of the glue will peel away.

I've not used white glue that way but I imagine all you do is wipe away the excess (with finger I guess) and leave the rest to dry. That way you won't have much to worry about sanding.

Thanks for all the replies,I'll be using the white glue idea.

I use Tamiya Thin mixed with Squadron Green to a thin consistency, and run a bead line along the seam. This fills the seam and can be easily sanded once dry.

Yep,Mr Surfacer 500 or Mr Dissolved putty

apply a bead of gap filling super glue, then spritz it with accelerator and begin sanding IMMEDIATELY

I do this too, but with Squadron White. Don't think there's any difference between the two, except for color. But white color is more universal. Apply on the tip of a small blade - just like buttering toast - and sand.

Yes, I'd fill it and I'd recommend using something that sets hard and can be sanded so that you don't end up with a raised bead where the surface should be flat. PVA won't work for that. After using several proprietary tube fillers for years (Squadron and Tamiya) I picked up some Bondo spot putty in Walmart on a visit to the U.S. and started using that recently.

I'm V impressed - sets hard, sands easily, appears not to shrink and economical. Now I know why so many builds I see by North American modellers have red putty visible. Only drawback is that the solvent separated (I bought it a while ago) so I had to massage the tube a bit to mix it again.

Opaque white is what I use for really fine gaps. Excess can easily be removed with a wet Q-Tip etc.