Variations on the fishing line theme.

[Graham Singleton <100421.2123@compuserve.com>]

>>Parallel lines stretched over the surface have the disadvantage that 
stripes are left behind which need filling<<

True, however if you wait 20 minutes, and have used colloidal silica, they will
have started to fade. Then a pass with the scraper at moderate rpessure will
remove the tramlines without needing to fill; the whole lot will have gelled and
lost its tendency to collapse under the scraper.

>>mix the colloidal silica and filler DRY<<

I agree, that's the way I do it.
Graham.