The 1704 alcohol varnish is highly renowned among violin makers, with its formula originating from Simone Sacconi, whose book *The Secrets of Stradivari* is nearly considered the bible of violin craftsmanship.

All the ingredients in the formula can be purchased on Taobao, and the formula in this video is,

Native gum arabic 180 grams

Sandarak 30 grams

Oleoresin of Myristica fragrans    30 grams

Lavender Essential Oil 15ml

Industrial alcohol, approximately 500ml

I made a slight modification to this recipe, but the preparation process remains the same,

Lac (native shellac)    120 grams

India Transparent Gum 120 grams

Sandarak (Sandar Oil)    40 grams

Oleoresin of Clove                   40 grams

Lavender Essential Oil                     20ml

99.7% Industrial Alcohol   750ml

Adding transparent shellac is beneficial for two reasons: first, it is relatively hard, forming a more protective lacquer film. Additionally, it is essentially colorless, which can help dilute the purple hue of the natural shellac,

It is easier to tint the varnish.

Heating with an electric stove in the video is relatively dangerous. In China, it is advisable to use an insulated heating base, with a temperature range of 80 to 99 degrees being optimal.