![]() |
![]() |
Drawing |
|
Ice bending |
|
Expanding |
Drawing
As in the bell formation process, in this step the inner diameter of a straight brass pipe is widened and constricted to obtain a roughly tapered pipe, which is then drawn through a template to achieve a precise taper. |
Ice bending
Similar to the the stem body formation process, water is put in the drawn tapered pipe and frozen. The tapered pipe is then bent as it is pressed against a form. |
Expanding
In this step a precision water-pressure mold is used to obtain the final shape. |
![]() |
![]() |
Ice bending |
|
Ball sizing |
Ice bending
As in the tapered pipe formation process, water is put in the drawn straight pipe and frozen. The straight pipe is then bent as it is pressed against a form. |
|
Ball sizing
In this step, a metal ball is passed through the pressing pipe to make the interior round and uniform. |
|
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
Copyright(C) 1999 YAMAHA CORPORATION All Rights Reserved.