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I thought I would share with you a very interesting project. That is the making of a stethoscope. The first stethoscopes were made of turned wood. They had a bell on one end for listening to low frequency sounds and a diaphram on the other for high pitched noise. I modern use the diaphram now has a plastic disk that is pressed into the skin. In the past, the diaphram was created by firm pressue against the skin.
The technique is similar to making a goblet. use a piece of wood about 2 to 2 1/2 inches square by about 7 to 8 inches in length. The bell is about 2 inches in diameter or a little less depending on the look you want. the diaphram is about 2 1/2 inches in diameter. The bell should taper gradually to the shaft (inside and out) which is about 1/2 inch in diameter into which you have bored a hole 1/4 inch in size through the length of the entire piece.
The diaphram is like the base of a goblet and straight across on the side to the patient with as abrut of a transition the the shaft as possible. Again, try to adjust to make it pleasing to the eye.
I finish this with a hard, high gloss.
The instrument is used by placing either end to your ear and the other to the patient. For the bell to function, you want light pressure on the patients skin, the diaphram functions by firm pressure thus streathing the skin like a drum.
Makes an interesting piece and one you can give to a medical friend. Pictures can be googled from the web.
The technique is similar to making a goblet. use a piece of wood about 2 to 2 1/2 inches square by about 7 to 8 inches in length. The bell is about 2 inches in diameter or a little less depending on the look you want. the diaphram is about 2 1/2 inches in diameter. The bell should taper gradually to the shaft (inside and out) which is about 1/2 inch in diameter into which you have bored a hole 1/4 inch in size through the length of the entire piece.
The diaphram is like the base of a goblet and straight across on the side to the patient with as abrut of a transition the the shaft as possible. Again, try to adjust to make it pleasing to the eye.
I finish this with a hard, high gloss.
The instrument is used by placing either end to your ear and the other to the patient. For the bell to function, you want light pressure on the patients skin, the diaphram functions by firm pressure thus streathing the skin like a drum.
Makes an interesting piece and one you can give to a medical friend. Pictures can be googled from the web.
