FWIW, just straight shellac works great for sealing MDF.
Get some unwaxed shellac flakes and mix a 1-pound cut (1:1 ratio - eg 100g flakes to 100ml methylated spirits).
You can mix up as little or as much as you want/need.
FWIW, just straight shellac works great for sealing MDF.
Get some unwaxed shellac flakes and mix a 1-pound cut (1:1 ratio - eg 100g flakes to 100ml methylated spirits).
You can mix up as little or as much as you want/need.
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