If we are lucky and our hole is going through we start to work out the
bell-end. The first part is done well with the normal chisel-iron. |
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some time later... the bell-end is about 28 cm deep. |
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In the left side of the pic is shown a lamp, witch I use, to control a little bit what is going on inside the hole. | |
A try to look through the hole. The bell-end will be left like it is now. Only the diameter of the linear bore will be increased. | |
Email to Johannes | 2005-12-03 |
forum |