Matching  the Meetu and Chaapu Natham

 

Matching Meetu and Chaapu requires a step that involves the adjustment of the Soru (Black Patch) which must only be carried out by an experienced individual.

A) Increasing the Meetu Natham

When Meetu Natham is less than the Chaapu Natham, a small portion of Soru has to be removed from the central convex meniscus area (i.e. the central raised part of the Soru).

To do this firstly roll a small piece of cloth tightly around the index finger and lightly wet it. The cloth must only be wetted slightly to avoid water penetrating through the Soru to the Koddu Thaddu of the Valanthalai. If this step is not performed carefully the lifespan of the Miruthangam will be decreased substantially.

Note: If the entire Soru area becomes wet and/or if the water penetrates through to the skin then it is likely that the Soru paste will eventually start to become loose and crumble out from the skin altogether.

Place the lightly moist cloth on the centre of the Soru and move the finger in a circular motion reaching out to a diameter of around 1 to 1.5 cm (circumference 3 to 4.5cm).

Once the centre of the Soru is slightly moist enough scarp this portion very carefully with a small sharp blade so that a thin layer of the Soru is removed. Repeat the procedure until Meetu Natham sounds equal to that of Chaapu Natham.

B) Decreasing the Meetu Natham

When the Meetu Natham is higher than the Chaapu Natham, a small layer of Soru has to be added to the central raised area of the Soru.

Add small amounts of Soru to the centre and spread with the fingertip to a diameter of around 1 to 1.5 cm.

Rub this portion in gradually with a polished stone so that it starts bonding to the existing Soru portion and forms a fine thin layer. The repeated polishing will heat the Soru to increase the bonding process and aid to dry it. Repeat the procedure until Meetu Natham sounds equal to that of the Chaapu Natham.

Click here to understand more about Soru.