"Sanding Dust" For Filler?

[sequoiaranger]

On my latest build (Fairchild Flounder) I had MARATHON PSR trying to get a smooth surface. Maybe not a great revelation, but I found a way to eliminate some small cracks and save yet another round of PSR.

After a vigorous sanding, the resulting dust gets lodged in the small indentations and cracks. I then brush on lightly some liquid cement, and it "dissolves" and seals the former dust into plastic filler.

I am not acquainted with "Mr. Surfacer", but I suppose the principle is similar?

[Mossie]

No, Mr Surfacer is pretty much a standard putty that's good at filling in small gaps.

[PR19_Kit]

That sounds like it'd work quite well if you dry sanded, but wet sanding results in a sort of semi-liquid slurry all over the model. 

I can't live with dry sanding as it seems I'm allergic to the stuff, thus the vast pile of soggy kitchen towels that end up in a pile under my modelling bench.

[NARSES2]

After a vigorous sanding, the resulting dust gets lodged in the small indentations and cracks. I then brush on lightly some liquid cement, and it "dissolves" and seals the former dust into plastic filler.

Sounds good. Similar in a way to dissolving sprue in a bottle of liquid cement.