Epoxy putty is used to fill cavities in porcelain. It is purchased in two separate containers, the contents of which should be mixed in the proportions specified by the manufacturer, that the hardening process begins.
After setting, the putty is very hard, however, it can be sanded with a file and sandpaper.
Po 45-60 minutes after mixing, the putty can no longer be modeled.
Kit can also be obtained at home, by mixing epoxy glue with whiteness of titanium dioxide and thickening with kaolin or talc. First work out the two-component adhesive, by increasing the amount of titanium dioxide. The mixture is sticky, however, if you add talcum powder to it, you will manage to knead it into a paste with a pasty consistency.
Cellulose filler is best suited for filling defects in earthenware, only in powder. It is nothing less, no more putty for filling, among others. plaster cracks. The use of plaster gives similar effects.
So that the water from the filler does not soak into the faience, you need to prime
edges of the defect with polyvinylacetate glue.
After filling the cavity in porcelain, apply a layer of cellulose filling and priming putty to the repair site.. It will be a good base for paint.
You can also use cellulose putty to fill small holes in porcelain items, if they only serve decorative purposes.
After preparing the filler, wash your hands and tools thoroughly with water or denatured alcohol, to avoid the risk of smearing the filler on the porcelain.