you had a finish that was as easy to use as shellac but with the
durability of polyurethane? Well wish no more, because here it is.
Hardened Shellac creates a film with a high resistance to heat, water and
alcohol, yet it is used in exactly the same was as any normal shellac. It
can be applied with a rubber as French polish, brushed, sprayed and
IS THIS POSSIBLE?
After shellac has been dissolved in
ethanol* it is possible to introduce additives that cause the shellac to
cross link after it has dried. This cross linking takes about 20 days to
completely cure, less in hot weather.
Ideal for table tops and other horizontal surfaces
such as dresser and desk tops, etc. Also brilliant for use on guitars,
lutes, harps and many other musical instruments where a traditional
finish is required and good resonance qualities are essential.
In February 2009 we began adding a plasticiser to
Hard Shellac. This gives elasticity to the cured finish, to combat
crazing on the thin walls of musical instruments, whilst still having
the same high resistance to marking from water, alcohol and heat it has
Hard Shellac with a Best By date of 08-2009 or later is NEW FORMULA
Hard Shellac is
applied in the same manner as any normal shellac. The drying time is the
same as regular shellac. ie: almost instantly.
Water dye may be used under the shellac to change the colour of the
timber to be polished. There is no need to use a sanding sealer or
anything else under the Hard Shellac, however you may apply a weak
solution of the shellac as a first coat eg. 1 part Hard Shellac to 8
parts ethanol*. This can be fine sanded after it has dried. This will
seal the timber and dye (if used) and will give a beautiful smooth base
upon which to build your finish.
Hard shellac has a shelf life of 18 mths from the time it is made
and all bottles are clearly labelled with the Best by date. Once it is
out of date it is no longer much good and should be disposed of.
NOTE: The above picture does not show the true colour of the Hard
is actually light amber in colour and even lighter after thinning. It
should not darken the colour of the timber it is applied to any more
than wetting the timber with water or alcohol will darken it. Hard
Shellac is a reasonably strong brew and may need to be thinned up to
50/50 with ethanol* depending on your application method.
application gear must be washed IMMEDIATELY after use.
If rubber, brush or
spray equipment is left to dry it will go rock hard and become unusable.
Wash up and thin with Ethanol* available at most good hardware and
details on using shellac get a copy of "A Polishers Handbook"
by Neil Ellis.
commonly known in Australia as - 100% Industrial
Methylated Spirits or 100% IMS. and sometimes called pure alcohol or
denatured alcohol. If you can't get 100% IMS then it is strongly
suggested that you use 95% rather than a cheap methylated spirits
without a percentage specified, as this by law can contain up to 40%+
water and will ruin the shellac and your finish)