until it becomes soft and gummy. It is then applied to the exposed surface of the maidan to form a circle
The circle is then allowed to dry in the sun.
reputed to be made of soot, iron dust, and other unidentified vegetable matter
small quantity of water and white flour
heated and mixed to make a glue
mixing process is done in a rubber mat made from an old inner tube
The glue is now mixed with the syahi masala
The application of a layer involves three steps:
Step 1. The syahi paste must be applied. This is done by using the first finger of the right hand to take up a small quantity of paste. The paste is quickly applied with a circular motion of the finger to the area previously covered by the mucilage. Support is given to the first finger by placing the second finger over the first.
Step 2. Excess paste must be removed. This is done by scraping with a curved metallic strip. The tabla is rotated during this process so that the application is of uniform thickness.
Immediately after the excess paste has been removed, a polished piece of basalt is used to rub the syahi
The pressure is very important; it starts gently and builds up to a considerable level
Periodically the stone is rubbed against the cheek to deposit a microscopic amount of sweat
diameter of each layer remains full size until four or five layers have been applied
Then the diameters are reduced until the layers are hardly more than half an inch
full size layers are again applied, followed by decreasing sizes
process continues until the desired thickness and shape is attained
attach the membrane to a resonator
conga players who take a heavy hide and sand the periphery of the skin so that the finished drumhead is thicker in the middle and thinner at the edge
The shape of the syahi is very important. The syahi will always be thicker in the center than at the edge
The sound will be dissonant with different strokes evoking different pitches
If the geometry is not correct then many of the resonance modes will not converge in a proper way
The cracks are the key to the syahi having flexibility, even though it is composed of such a rigid material
lower quality skins are utilized by folding them in half several times to form a triangle. The tip is cut off, so that when it is unfolded, there will be a circle of about two to three inches in diameter that has been removed
The chat is laid on top of an intact skin so that the outer surfaces of both skins face up
Insertions are made parallel to the edge of the skins with a small chisel
Care should be taken so that the chat is slightly bunched up, so that on the drum all of the tension will be exerted against the maidan
A piece of cord is inserted with a large needle and threaded back and forth through the two skins as the insertions are made
two ends of the cord are tied together.
If the chat is very broad and extends inwards to a great extent, it will decrease the sustain of the instrument.