you could try it carefully on a test piece
but would say no dont do it because it may be flamable
you could also make it crust over [skin form]and take twice as long to harden
it may also shrink
You might be better off with Toupret TX110. It has cement in it whereas Easifil cures through evaporation.
Personally I find easifil to be too soft and (often) causes more problems than it solves. For example, before repainting a plastered wall, I normally sand it with 100 grit paper on my random orbital. If the sander encounters any areas patched with easifill the sander digs in and rips the emulsion off. I then need to scrape away the easifil and fill with a suitable filler.
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