Hello, I varnish for several years successfully.I 5 days ago I attacked two pretty pedestal tables. To my surprise the varnish with shellac does not dry! it must be said that the hygrometry is not favorable. But still after 4 days I should be able to shell a layer without the steel wool 000 sticks! This is the first time that such a thing occurs.
The problem you encounter is typical of a problem of hygrometry too high and temperature too low (minimum 18° C), the room, but also wood, configuration that makes the varnish "in love". It is not impossible, either, that your varnish is too old.
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